MISSISSIPPI SOYBEAN VARIETY TRIALS, 2017

Transcription

1 MISSISSIPPI SOYBEAN VARIETY TRIALS, 07 Information Bulletin 56 February 08 MISSISSIPPI S OFFICIAL VARIETY TRIALS

2 TE CH N I C A L A DV I S O RY C O M MIT TE E Reuben Moore, Chairman Associate Director, MAFES Mississippi State University Tom Allen Associate Extension/Research Professor and Plant Pathologist Delta Research and Extension Center Wes Burger Associate Director, MAFES Mississippi State University Greg Ferguson Industry Representative Monsanto Anne M. Gillen USDA-ARS Stoneville Jeff Hollowell Industry Representative DuPont Pioneer Trent Irby Assistant Extension Professor and Soybean Specialist Mississippi State University Mark Kurtz Variety Trial Coordinator Mississippi State University Chris Ouzts Industry Representative Armor Seed Mike Phillips Department of Plant and Soil Sciences Mississippi State University Dennis Reginelli Regional Extension Specialist II Noxubee County Jan de Regt Producer Representative Dennis Rowe Statistician MSU Experimental Statistics Gibb Steele Producer Representative Randy Vaughan Foundation Seed Mississippi State University The Mississippi Soybean Promotion Board provided partial funding for this project.

3 NOTICE TO USER This information bulletin is a summary of research conducted under project number MIS 348 at seven locations in the state (see map). It is intended for farmers, seedsmen, colleagues, cooperators, and sponsors. Interpretation of this data should not be construed as a recommendation or as an endorsement of a specific variety or product. This report contains data generated as part of the Mississippi Agricultural and Forestry Experiment Station research program. Joint sponsorship by the organizations listed on pages is gratefully acknowledged. Trade names of commercial products used in this report are included only for clarity and understanding. All available names (i.e., trade names, code numbers, chemical names, etc.) of varieties or products used in this research project are listed on pages

4 Mississippi Soybean Variety Trials, 07 MAFES Official Variety Trial Contributors Brad Burgess Director, Variety Testing Mississippi State University Jake Bullard Assistant Director, Variety Testing Mississippi State University Jimbo Burkhalter Extension Agent IV MSU Extension Service Tom Allen Associate Extension/Research Professor and Plant Pathologist Delta Research and Extension Center Dan Haire Area Extension Agent II DeSoto County Trent Irby Assistant Extension Professor and Soybean Specialist Mississippi State University Jason McQuirter Research Associate II Variety Testing Mississippi State University Isaac Pickett Research Associate I Brown Loam Branch Experiment Station Dennis Reginelli Regional Extension Specialist II Noxubee County Mark Silva Extension Associate and Program Coordinator Delta Agricultural Weather Center Delta Research and Extension Center Walter Solomon Research Associate III Delta Research and Extension Center Joshua White Manager, Forage Variety Testing Mississippi State University Bisoondat Macoon Associate Professor and Interim Facilities Coordinator Brown Loam Branch Experiment Station For more information, contact Burgess at (66) ; , Brad.Burgess@msstate.edu. Recognition is given to Jason Hillhouse, research technician for the Variety Trial Program, for his assistance in packaging, planting, harvesting, and recording plot data. This publication was prepared by Dixie Albright, office associate for MAFES Research Support Units. This document was approved for publication as Information Bulletin 56 of the Mississippi Agricultural and Forestry Experiment Station. It was published by the Office of Agricultural Communications, a unit of the Mississippi State University Division of Agriculture, Forestry, and Veterinary Medicine. Copyright 08 by Mississippi State University. All rights reserved. This publication may be copied and distributed without alteration for nonprofit educational purposes provided that credit is given to the Mississippi Agricultural and Forestry Experiment Station. Find variety trial information online at mafes.msstate.edu/variety-trials.

5 TODD WILLIAMS FARM Olive Branch AYRES FARM Hickory Flat DULANEY FARMS Clarksdale RAY HARDY JR. FARM Tippo DELTA BRANCH Stoneville STEELE FARMS Longwood BLACK BELT BRANCH & BROOKSVILLE FARM Brooksville BROWN LOAM BRANCH Raymond Soybean Variety TEST LOCATIONS

6 Contents Introduction Summary of Locations Summary of Roundup Ready Yields by Maturity Group Roundup Ready Group IV -, -, and 3-year Roundup Ready Group V -, -, and 3-year Summary of Liberty Link Yields by Maturity Group Liberty Link Group IV -, -, and 3-year Liberty Link Group V -, -, and 3-year Summary of Conventional Yields by Maturity Group Conventional Group IV -, -, and 3-year Conventional Group V -, -, and 3-year Results Brooksville, Black Belt Branch Location. Brooksville silty clay Nonirrigated 9 Rows Roundup Ready Group IV Roundup Ready Group V Liberty Link Group IV and V Conventional Group IV and V Brooksville, Brooksville Farm Location. Brooksville silty clay Irrigated 30 Rows Roundup Ready Group IV Roundup Ready Group V Clarksdale, Dulaney Farms Location 3. Alligator clay and Forestdale silt loam Irrigated 30 Rows Roundup Ready Group IV Roundup Ready Group V Hickory Flat, Sid Ayres Farm Location 4. Arkabutla silt loam Nonirrigated 9 Rows Roundup Ready Group IV Roundup Ready Group V Longwood, Steele Farms Location 5. Sharkey and Dowling clay Irrigated 9 Rows Roundup Ready Group IV and V Liberty Link Group IV and V Olive Branch, Todd Williams Farm Location 6. Collins silt loam Nonirrigated 9 Rows Roundup Ready Group IV Roundup Ready Group V Raymond, Brown Loam Branch Location 7. Loring silt loam Nonirrigated 9 rows Roundup Ready Group IV and V LibertyLink Group IV and V Stoneville (clay), Delta Branch Location 8. Sharkey clay Nonirrigated 9 Rows and Irrigated 30 Rows Roundup Ready Group IV Nonirrigated Roundup Ready Group IV and V Irrigated Liberty Link Group IV and V Irrigated Conventional Group IV and V Irrigated Stoneville (loam), Delta Branch Location 8. Bosket very fine sandy loam Irrigated 30 Rows Roundup Ready Group IV Roundup Ready Group V Tippo, Ray Hardy Jr. Farm Location 9. Dundee and Tensas silt loam Nonirrigated 9 Rows Roundup Ready Group IV Early Roundup Ready Group IV Late Soybean Variety Trial Stem Canker Report Plant Characteristics Public Varieties Entered Commercial Varieties Entered

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8 Mississippi Soybean Variety Trials, 07 Procedures INTRODUCTION There has been a proliferation of soybean varieties in recent years, and many good varieties are available to Mississippi producers. No single variety is superior, but in some situations, there are varieties that are more specifically adapted than others. Selecting a variety for planting requires knowledge of disease, nematode, and herbicide reactions, as well as the yield performance of each variety on a particular soil type. In many cases, planting the proper varieties will make substantial differences in yield and profitability on a farm. Proper management, including adequate lime, fertilizer, and weed control, is required to produce high yields of any variety, but yields may be limited, even under good management, unless the proper varieties are planted. Soybean variety trials were conducted at eight locations in 07 (see map). Commercial seed companies were given the opportunity to enter varieties for testing. Seed of all private entries were supplied by the participating companies. Public varieties were selected by the Technical Advisory Committee for evaluation at each location. The experimental design at each location for each maturity group was a randomized complete block, with three replications of each entry. Seeding Rate. All seeds were packaged for planting at the rate of nine seeds per foot of row for 30-inch row spacing and at the rate of six seeds per foot for 9-inch row spacing. Plots were planted with a cone planter. Irrigated plots had four rows, spaced 30 inches apart; nonirrigated plots had three rows, spaced 9 inches apart. All irrigated plots were planted to a plot length of 5 feet by using a planter with a cable trip system. All nonirrigated plots were planted to a length of 8 feet. Plot ends were trimmed to a uniform length 3 to 4 weeks after emergence. Cultural Practices. Cultural and pest control practices for optimum yields were followed. Plots were limed and fertilized on the basis of an annual soil test. All seeds were treated with an insecticide/fungicide before planting. Only herbicides currently registered for use on soybean with strict adherence to all label instructions were used in these studies. Maturity Date. Maturity is considered to be the date when the pods are dry and most of the leaves have dropped. Under most conditions, the stems are also dry. Yield. An Almaco plot combine was used to harvest each plot. Harvested seed were allowed to dry at ambient temperature to a uniform moisture content before weighing. Weights were converted to yield in bushels per acre (60 pounds per bushel) at 3% moisture. Plant Height. Plants were measured from the soil to the top extremity, at maturity, and plant height was recorded as the average of the height of plants measured. Lodging. Lodging was rated and recorded on a scale of = almost all plants erect, = all plants leaning slightly or only a few plants down, 3 = all plants leaning moderately or 5 to 50 percent of plants down, 4 = all plants leaning considerably or 50 to 80 percent of plants down, and 5 = all plants down. Mississippi Agricultural and Forestry Experiment Station

9 How to Select Varieties In Problem or Difficult Fields () Identify fields that have had problems in the past. Problems to consider may include diseases, nematodes, or fields that make planting or harvest difficult because of extremely dry or wet conditions. The Mississippi State University Extension Service offers a disease diagnostic service and nematode analysis free of charge. () Use Tables 60 to 67 to select varieties for fields that need disease resistance. (3) Select varieties using multiyear averages from all available locations. Identify those varieties that have desired pest resistance along with a high yield potential. Use data from a test site or sites with a soil type similar to that where the soybeans will be grown. Consider planting dates and maturity dates that may allow you to avoid historical field problems. In Nonproblem Fields () Identify the farm s highest yielding fields that have no specific disease problems. () Select varieties with the best yield potential using multiyear averages from all available locations. Use data from a test site or sites with a soil type similar to that where the soybeans will be grown. (3) Try new varieties on a limited number of acres. Don t abandon older, consistent-performing varieties that are yielding well unless research and experience show an advantage for newer varieties. Planting Date and Maturity Date () Varieties in Maturity Groups IV and V are recommended. Earlier maturing varieties should be considered for planting where fall seedbed preparation was done the previous year and in fields that are subject to drought stress during the growing season and/or wet soils during the usual harvest period. Later maturing varieties should be considered for planting in fields that are not as prone to drought stress, where irrigation will be used to alleviate drought stress, and for later planting. However, early General Characteristics of Varieties planting of all acreage is encouraged to reduce risk from drought and obtain higher yields. () Early-season production is a practice that has been quite successful and consistent for several years. Cool, wet soils at planting may justify the use of a seed treatment that has activity against Pythium, since no varieties have resistance to infection and resulting damage from this organism. Most Maturity Group IV soybeans have a narrow growth habit. Given their growth, habit narrow rows are quite advantageous. Early April to early May planting is recommended for early-season production of Group IV varieties. Irrigation allows later planting of early-maturing soybeans; however, the full yield potential may not be realized when planted late. Timely harvest is crucial with early-maturing varieties because dry weather at maturity may promote shattering. There is a wide range in maturity within Group IV soybeans. Determine if an early Group IV or a late Group IV variety, or some acreage of both, will fit into your operation. (3) Timely planting is crucial for optimum production of all maturity groups of soybeans. An attempt should be made to complete soybean planting as early as possible. Planting of Group V and Group VI can be made in April. Delays in planting will result in reduced yield potential for almost all varieties in all maturity groups. Herbicide-Resistant Varieties () Evaluate overall performance characteristics of the variety including yield potential, disease and nematode resistance, maturity date, lodging, etc. as you would any variety. () Compare these characteristics to other varieties, conventional and herbicide-resistant. (3) Consider seed premiums, technology fees, and specific weed problems. Determine total cost of conventional and herbicide-resistant-crop weed control programs, and combine this information with factors listed above in choosing a variety. Soybean varieties differ in significant characteristics that may not affect their performance. Tables 68 to 75 give the general characteristics of most varieties grown in Mississippi. Pubescence and Hilum Color. Brown (tawny) and gray are the basic pubescence (hair) colors found among varieties. Varying pod-wall colors result in different intensities of mature pod colors. The eye of the seed is called a hilum, or point of attachment to the pod, and it differs in color by variety. Seed Size. There is no relationship between inherited seed size and seed yield. A small-seeded variety may yield as much as or more than a large-seeded variety. The average seed per pound for different varieties is shown in Tables 68 to 75, but this is subject to seasonal variation. Knowing the number of seed per pound is important in determining the amount of seed needed for planting. Fewer pounds are required for small-seeded varieties than for large-seeded varieties. Your county Extension office has a publication (Information Sheet 94) that deals with seeding rates and plant populations. Mississippi Soybean Variety Trials, 07

10 Flowering. Varieties of Maturity Group IV generally display an indeterminate growth habit. This means that a large portion of their vegetative growth occurs after the onset of flowering begins. In contrast, varieties of Groups V and VI display a determinate growth habit, where most of the vegetative growth occurs before flowering. The date of first flower will be determined by the time of planting and maturity. For example, a mid-group IV variety may bloom 3 weeks earlier than a Group V variety, whereas a late Group IV variety may bloom only week earlier than a Group V variety. Soybean flower petals are purple or white. The flower color is controlled strictly by genetics, and only one flower color occurs in a pure variety. Maturity Group. Within the Maturity Group IV trials, the wide variation in maturity dates is attributed to lack of rigid standards for classifying varieties within a group. Use of Data Tables and Summary Statistics It was decided to subdivide both the Group IV and Group V trials into two maturity groups. All maturity groups were assigned an early- and late-maturity check: Conventional Test Maturity roup Check Group IV AG463 Group V 5A94 Roundup Ready Test Maturity Group Early Check Late Check Group IV Early AG463 Group IV Late AG463 P4900RY Group V Early 5A94 S57RY6 Group V Late S57RY6 LibertyLink Maturity Group Check Group IV P 4930LL Group V CZ 550 LL The yield potential of a given variety cannot be measured with complete accuracy. Consequently, replicated plots of all varieties are evaluated for yield, and the yield of a given variety is estimated as the mean of all replicated plots of that variety. Yields may vary from one plot to another, which introduces a certain degree of error to the estimation of yield potential. This natural variation is often responsible for yield differences seen among different varieties. Thus, even if the mean yield of two varieties is numerically different, they are not necessarily significantly different in terms of yield potential. In other words, the ability to measure yield is not precise enough to determine whether such small differences are observed purely by chance or because of superior performance. The least significant difference (LSD) is an estimate of the smallest difference between two varieties that can be declared to be the result of something other than random variation in a particular trial. Consider the following example for a given trial: Variety Yield Abe 40 bu/a Bill 35 bu/a Charlie 3 bu/a LSD 7 bu/a The difference between variety Abe and variety Bill is 5 bushels per acre (40-35 = 5). This difference is smaller than the LSD (7 bushels per acre). Consequently, it is concluded that variety Abe and variety Bill have the same yield potential, since the observed difference occurred purely due to chance. The difference between variety Abe and variety Charlie is 9 bushels per acre (40-3 = 9), which is larger than the LSD (7 bushels per acre). Therefore, it is concluded that the yield potential of variety Abe is superior to that of variety Charlie, since the difference is larger than would be expected purely by chance. The coefficient of variation (CV) is a measure of the relative precision of a given trial and is used to compare the relative precision of different trials. The CV is generally considered to be an estimate of the amount of unexplained variation in a given trial. This unexplained variation could be the result of variation between plots, with respect to soil type, fertility, insects, diseases, drought stress, etc. In general, the higher the CV, the less precise a given trial is. The coefficient of determination (R ) is another measure of the level of precision in a trial and is also used to compare the relative precision of different trials. The R is a measure of the amount of variation that is explained, or accounted for, in a given trial. For example, an R value of 90 percent indicates that 90 percent of the observed variation in the trial has been accounted for, with the remaining 0 percent being unaccounted for. The higher the R value, the more precise the trial. The R is generally considered to be a better measure of precision than is the CV, for comparison of different trials. Mississippi Agricultural and Forestry Experiment Station 3

11 Table. 07 Soybean Locations. Location Irrigation Soil type Planting Harvest dates Row date spacing Brooksville, Black Belt Station Not Irrigated Brooksville silty clay 4/ 9/8 (IV RR, IV LL & IV Conv.) 9 9/7 (V RR, V LL & V Conv.) Brooksville, Brooksville Farm Pivot Irrigated Brooksville silty clay 4/8 9/9 (IV RR) 9/7 (V RR) 30 Clarksdale, Dulaney Farms Furrow Irrigated Alligator clay 5/0 9/ (IV RR) 0/6 (V RR) 30 & Forestdale silty clay Hickory Flat, Sid Ayres Farm Not Irrigated Arkabutla silt loam 4/ 9/5 (IV RR) 0/6 (V RR) 9 Longwood, Steele Farms Furrow Irrigated Sharkey & Dowling clay 5/ 0/4 (IV & V RR, IV & V LL) 9 Olive Branch, Todd Williams Farm Not Irrigated Collins silt loam 5/9 0/9 (IV &V RR) 9 Raymond, Brown Loam Branch Station Not Irrigated Loring silt loam 4/9 9/5 (IV RR & IV LL) 9 9/6 (V RR & V LL) Stoneville (clay), Delta Branch Station Furrow Irrigated Sharkey clay 5/8 9/8 (IV RR, IV LL & IV Conv.) 30 0/6 (V RR, V LL & V Conv.) Stoneville (clay), Delta Branch Station Not Irrigated Sharkey clay 4/6 9/8 (IV RR) 9 Stoneville (loam), Delta Branch Station Furrow Irrigated Bosket 4/6 0/5 (IV & V RR) 30 very fine sandy loam Tippo, Ray Hardy Farm Not Irrigated Dundee & Tensas 4/0 9/ (IV RR) 9 silt loam 4 Mississippi Soybean Variety Trials, 07

12 Table. Summary of Yield for Group IV Early Roundup Ready for the 07 Mississippi Soybean Variety Trials. Brand Variety Brooks- Clarks- Long- Stone- Stone- Irrigated Brooks- Hickory Olive Ray- Stone- Tippo Not Overall ville dale wood ville ville avg. ville Flat Branch mond ville not irr. avg. irr. irr. irr. (clay) (loam) not not not not (clay) irr. avg. irr. irr. irr. irr. irr. irr. not irr. bu/a bu/a bu/a bu/a bu/a bu/a bu/a bu/a bu/a bu/a bu/a bu/a bu/a bu/a AgriGold G4380RX AgriGold G4440RX AgriGold G4685RX AGS GS45R AGS GS46X Armor 44-D Armor 46-D Armor ARX Asgrow AG43X Asgrow AG45X Asgrow AG46X Asgrow AG46X Asgrow AG46X Credenz CZ 48 RY Credenz CZ 4590 RY Croplan RX456S Delta Grow 4670RR Delta Grow DG 4680RR Dyna-Gro 3RY Dyna-Gro S43RY Dyna-Gro S44XS Dyna-Gro S45XS Dyna-Gro S45XS Dyna-Gro SX7846XS Great Heart Seed GT-4540XS MorSoy MS 466 RXT NK S43-V3X NK S45-K5X Pioneer P40T6X Pioneer P45T74X Progeny P 456RXS Progeny P 460RXS Progeny P455RX Progeny P4444RXS U. of Missouri S4-905R Mean CV LSD (0.05) NS R Error DF Mississippi Agricultural and Forestry Experiment Station 5

13 Table 3. Summary of -Year Yields for Maturity Group IV Early Roundup Ready for the 06 and 07 Mississippi Soybean Variety Trials. Brand Variety Brooks- Clarks- Long- Stone- Stone- Irrigated Brooks- Hickory Olive Stone- Tippo Not Overall ville dale wood ville ville avg. ville Flat Branch ville not irr. avg. irr. irr. (clay) irr. (loam) not irr. not irr. not irr. not irr. irr. avg. bu/a bu/a bu/a bu/a bu/a bu/a bu/a bu/a bu/a bu/a bu/a bu/a bu/a AGS GS45R Armor 46-D Asgrow AG46X Asgrow AG46X Credenz CZ 48 RY Credenz CZ 4590 RY Delta Grow 4670RR Delta Grow DG 4680RR Dyna-Gro 3RY Dyna-Gro S43RY Great Heart Seed GT-4540XS Progeny P 456RXS Progeny P 460RXS Mean No -year averages for Xtend varieties at these locations. Table 4. Summary of 3-Year Yields for Maturity Group IV Early Roundup Ready for the 05, 06, and 07 Mississippi Soybean Variety Trials. Brand Variety Clarksdale Stoneville Stoneville Irrigated Brooksville Hickory Stoneville Tippo Not irr. Overall irr. irr. irr. avg. not Flat not not avg. avg. (clay) (loam) irr. not irr. irr. irr. bu/a bu/a bu/a bu/a bu/a bu/a bu/a bu/a bu/a bu/a Credenz CZ 48 RY Credenz CZ 4590 RY Delta Grow 4670RR Dyna-Gro 3RY Dyna-Gro S43RY Mean Mississippi Soybean Variety Trials, 07

14 Table 5. Summary of Yield for Group IV Late Roundup Ready for the 07 Mississippi Soybean Variety Trials. Brand Variety Brooks- Clarks- Long- Stone- Stone- Irrigated Brooks- Hickory Olive Ray- Stone- Tippo Not Overall ville dale wood ville ville avg. ville Flat Branch mond ville not irr. avg. irr. irr. irr. (clay) (loam) not not not not (clay) irr. avg. irr. irr. irr. irr. irr. irr. not irr. bu/a bu/a bu/a bu/a bu/a bu/a bu/a bu/a bu/a bu/a bu/a bu/a bu/a bu/a AgriGold G4835RX AgriGold G4990RX AGS GS48R Armor ARX Armor 48D Asgrow AG47X Asgrow AG48X Croplan RC Croplan RX Delta Grow DG 4790RR Delta Grow DG 485 RR/STS Delta Grow DG 4880RR Delta Grow DG 4970RR Delta Grow DG4835 RRX Delta Grow DG4995 RR Delta Grow DGX 4845RRX Dyna-Gro S48XT Dyna-Gro S49XS Dyna-Gro SX7648XT Go Soy 49G Great Heart Seed GT-47X Great Heart Seed GT-477CR Great Heart Seed GT-487XS Great Heart Seed GT-50XS MorSoy MS 4846 RXT NK S48-RX Petrus Seed 479 GTS Petrus Seed 496 GT Pioneer P48T7X Progeny P 4757RY Progeny P 4799RXS Progeny P 486RX Progeny P485RX Progeny P499RXS Progeny P4996RXS Terral 48A Terral 48A Terral 47R Terral 49R Terral REV 4857X Terral REV 497X U. of Missouri S4-546R USG 7487XTS USG 7496XTS USG 7497XT USG 74K95RS Mean CV LSD (0.05) NS R Error DF Mississippi Agricultural and Forestry Experiment Station 7

15 Table 6. Summary of -Year Yields for Maturity Group IV Late Roundup Ready for the 06 and 07 Mississippi Soybean Variety Trials. Brand Variety Brooks- Clarks- Long- Stone- Stone- Irrigated Brooks- Hickory Olive Stone- Tippo Not Overall ville dale wood ville ville avg. ville Flat Branch ville not irr. avg. irr. irr. (clay) irr. (loam) not irr. not irr. not irr. not irr. irr. avg. bu/a bu/a bu/a bu/a bu/a bu/a bu/a bu/a bu/a bu/a bu/a bu/a bu/a AGS GS48R Asgrow AG47X Croplan RC Delta Grow DG 4790RR Delta Grow DG 485 RR/STS Delta Grow DG 4880RR Delta Grow DG 4970RR Dyna-Gro S48XT Go Soy 49G Great Heart Seed GT-477CR Progeny P 4757RY Progeny P 4799RXS Progeny P 486RX Terral REV 48A Terral REV 48A Terral REV 47R Terral REV 49R USG 7487XTS USG 7496XTS USG 7497XT Mean No -year averages for Xtend varieties at these locations. Table 7. Summary of 3-Year Yields for Maturity Group IV Late Roundup Ready for the 05, 06, and 07 Mississippi Soybean Variety Trials. Brand Variety Clarksdale Stoneville Stoneville Irrigated Brooksville Hickory Stoneville Tippo Not irr. Overall irr. irr. irr. avg. not Flat not not avg. avg. (clay) (loam) irr. not irr. irr. irr. bu/a bu/a bu/a bu/a bu/a bu/a bu/a bu/a bu/a bu/a Delta Grow DG 4790RR Delta Grow DG 485 RR/STS Delta Grow DG 4880RR Delta Grow DG 4970RR Great Heart Seed GT-477CR Progeny P 4757RY Terral REV 47R Terral REV 49R Mean Mississippi Soybean Variety Trials, 07

16 Table 8. Summary of Yield for Group V Early Roundup Ready for the 07 Mississippi Soybean Variety Trials. Brand Variety Brooks- Clarks- Long- Stone- Stone- Irrigation Brooks- Hickory Olive Ray- Not irr. Overall ville dale wood ville irr. ville irr. avg. ville Flat Branch mond avg. avg. irr. irr. irr. (clay) (loam) not irr. not irr. not irr. not irr. bu/a bu/a bu/a bu/a bu/a bu/a bu/a bu/a bu/a bu/a bu/a bu/a AgriGold G5000RX Armor 53-D Armor ARX Armor 57D Asgrow AG5X Asgrow AG55X Asgrow AG55X Credenz CZ 5375 RY Delta Grow DG 570RR/STS Delta Grow DG 5555RR Delta Grow DG5580 RR Dyna-Gro S56RY Dyna-Gro S56XT Dyna-Gro SX765XS Go Soy 54G Great Heart Seed GT-534X MorSoy MS 5607 RXT NK S5-Y7X Pioneer P50T56X Pioneer P50T9X Pioneer P54A54X Pioneer P55A49X Progeny P 506RXS Progeny P 547RX Progeny P 557RXS Progeny P 5376RX Progeny P 5688RX Terral REV 50A Terral REV 5A Terral REV 55A Terral REV 56A Terral REV 56R U. of Arkansas UA 544RR U. of Missouri S4-907R USG 7547XT USG 7568XT Mean CV LSD (0.05) R Error DF Mississippi Agricultural and Forestry Experiment Station 9

17 Table 9. Summary of -Year Yields for Maturity Group V Early Roundup Ready for the 06 and 07 Mississippi Soybean Variety Trials. Brand Variety Brooks- Clark- Long- Stone- Stone- Irrigated Brooks- Hickory Olive Not Overall ville dale wood ville irr. ville irr. avg. ville Flat Branch irr. avg. irr. irr. irr. (clay) (loam) not irr. not irr. not irr. avg. bu/a bu/a bu/a bu/a bu/a bu/a bu/a bu/a bu/a bu/a bu/a Armor 53-D Credenz CZ 5375 RY Delta Grow DG 570RR/STS Delta Grow DG 5555RR Delta Grow DG5580 RR Dyna-Gro S56RY Progeny P 506RXS Progeny P 547RX Terral REV 5A U. of Arkansas UA 544RR USG 7547XT Mean No -year averages for Xtend varieties at these locations. Table 0. Summary of 3-Year Yields for the Maturity Group V Early Roundup Ready for the 05, 06, and 07 Mississippi Soybean Variety Trials. Brand Variety Clarksdale Stoneville Stoneville Irrigated Brooksville Hickory Flat Not irr. Overall irr. irr. (clay) irr. (loam) avg. not irr. not irr. avg. avg. bu/a bu/a bu/a bu/a bu/a bu/a bu/a bu/a Delta Grow DG 570RR/STS Dyna-Gro S56RY Terral REV 5A U. of Arkansas UA 544RR Mean Table. Summary of Yield for Group V Late Roundup Ready for the 07 Mississippi Soybean Variety Trials. Brand Variety Brooks- Clarks- Long- Stone- Stone- Irrigated Brooks- Hickory Olive Ray- Not irr. Overall ville dale wood ville irr. ville irr. avg. ville Flat Branch mond avg. avg. irr. irr. irr. (clay) (loam) not irr. not irr. not irr. not irr. bu/a bu/a bu/a bu/a bu/a bu/a bu/a bu/a bu/a bu/a bu/a bu/a Asgrow AG59X Progeny P575RY U. of Arkansas UA 575GT USG 75B75R Mean CV LSD (0.05) NS NS 9.6 NS 3.5 NS NS NS NS R Error DF Mississippi Soybean Variety Trials, 07

18 Table. Summary of -Year Yields for Maturity Group V Late Roundup Ready for the 06 and 07 Mississippi Soybean Variety Trials. Brand Variety Brooks- Clark- Long- Stone- Stone- Irrigated Brooks- Hickory Olive Not Overall ville dale wood ville irr. ville irr. avg. ville Flat Branch irr. avg. irr. irr. irr. (clay) (loam) not irr. not irr. not irr. avg. bu/a bu/a bu/a bu/a bu/a bu/a bu/a bu/a bu/a bu/a bu/a Progeny P575RY U. of Arkansas UA 575GT USG 75B75R Mean Table 3. Summary of 3-Year Yields for Maturity Group V Late Roundup Ready for the 05, 06, and 07 Mississippi Soybean Variety Trials. Brand Variety Clarksdale Stoneville Stoneville Irrigated Brooksville Hickory Flat Not irr. Overall irr. irr. (clay) irr. (loam) avg. not irr. not irr. avg. avg. bu/a bu/a bu/a bu/a bu/a bu/a bu/a bu/a Progeny P575RY USG 75B75R Mean Table 4. Summary of Yield for Group IV LibertyLink for the 07 Mississippi Soybean Variety Trials. Brand Variety Longwood Stoneville Irrigated Brooksville Raymond Not irr. Overall irr. irr. (clay) avg. not irr. not irr. avg. avg. bu/a bu/a bu/a bu/a bu/a bu/a bu/a Credenz CZ 384 LL Credenz CZ 3945 LL Credenz CZ 4044 LL Credenz CZ 405 LL Credenz CZ 4 LL Credenz CZ 4308 LL Credenz CZ 4540LL Credenz CZ 4548 LL Credenz CZ 4748 LL Credenz CZ 488 LL Credenz CZ 480 LL Credenz CZ 498 LL Credenz CZ 4938 LL Credenz HBK LL Delta Grow DG 4587LL/STS Delta Grow DG 478LL Delta Grow DG 4967LL Delta Grow DG 4977LL/STS Dyna-Gro S45LL Dyna-Gro S49LL Go Soy 49L Go Soy 474LL Terral REV 48L Terral REV 45L Terral REV 49L Mean CV LSD (0.05) R Error DF Mississippi Agricultural and Forestry Experiment Station

19 Table 5. Summary of -Year Yields for Maturity Group IV LibertyLink for the 06 and 07 Mississippi Soybean Variety Trials. Brand Variety Longwood Stoneville Delta Brooksville Overall (Delta) (Delta) average (Hills) average bu/a bu/a bu/a bu/a bu/a Credenz CZ 4044 LL Credenz CZ 405 LL Credenz CZ 4 LL Credenz CZ 4540LL Credenz CZ 4748 LL Credenz CZ 488 LL Credenz HBK LL Delta Grow DG 4587LL/STS Delta Grow DG 478LL Delta Grow DG 4967LL Delta Grow DG 4977LL/STS Dyna-Gro S49LL Go Soy 474LL Terral REV 48L Mean Table 6. Summary of 3-Year Yields for Maturity Group IV LibertyLink for the 05, 06, and 07 Mississippi Soybean Variety Trials. Brand Variety Stoneville Brooksville Overall (Delta) (Hills) average bu/a bu/a bu/a Credenz CZ 405 LL Credenz CZ 4540LL Credenz CZ 4748 LL Credenz CZ 488 LL Credenz HBK LL Delta Grow DG 478LL Delta Grow DG 4967LL Delta Grow DG 4977LL/STS Dyna-Gro S49LL Go Soy 474LL Mean Table 7. Summary of Yield for Group V LibertyLink for the 07 Mississippi Soybean Variety Trials. Brand Variety Longwood Stoneville Irrigated Brooksville Raymond Not irr. Overall irr. irr. (clay) average not irr. not irr. average average bu/a bu/a bu/a bu/a bu/a bu/a bu/a Credenz CZ 547 LL Credenz CZ 550 LL Credenz CZ 54 LL Credenz CZ 555 LL Credenz CZ 577 LL Go Soy 55LL Go Soy 555LL Go Soy 55LL Mean CV LSD (0.05) NS 5.4 NS NS R Error DF Mississippi Soybean Variety Trials, 07

20 Table 8. Summary of -Year Yields for Maturity Group V LibertyLink for the 06 and 07 Mississippi Soybean Variety Trials. Brand Variety Longwood Stoneville Brooksville Overall irr. irr. (clay) not irr. average bu/a bu/a bu/a bu/a Credenz CZ 547 LL Credenz CZ 550 LL Credenz CZ 54 LL Credenz CZ 555 LL Go Soy 55LL Go Soy 555LL Go Soy 55LL Mean Table 9. Summary of 3-Year Yields for Maturity Group V LibertyLink for the 05, 06, and 07 Mississippi Soybean Variety Trials. Brand Variety Stoneville Brooksville Overall irr. (clay) not irr. average bu/a bu/a bu/a Credenz CZ 547 LL Credenz CZ 550 LL Credenz CZ 54 LL Credenz CZ 555 LL Go Soy 55LL Go Soy 555LL Go Soy 55LL Mean Table 0. Summary of Yield for Maturity Group IV Conventional for the 07 Mississippi Soybean Variety Trials. Brand Variety Stoneville Brooksville Overall irr. (clay) not irr. average bu/a bu/a bu/a Go Soy Ireane U. of Missouri S3-743C U. of Missouri S3-0590C U. of Missouri S3-385C U. of Missouri S4-639C U. of Missouri S3-805C Mean CV LSD (0.05) R 8 7 Error DF 0 0 Table. Summary of -Year Yields for Maturity Group IV Conventional for the 06 and 07 Mississippi Soybean Variety Trials. Brand Variety Stoneville Brooksville Overall (Delta) irr. (Hills) not irr. average Go Soy Ireane Overall Mean Mississippi Agricultural and Forestry Experiment Station 3

21 Table. Summary of the 3-Year Yields for the Maturity Group IV Conventional for the 05, 06, and 07 Mississippi Soybean Variety Trials. Brand Variety Brooksville not irr. bu/a Go Soy Ireane 46.3 Overall Mean 46.3 Table 3. Summary of Yield for Group V Conventional for the 07 Mississippi Soybean Variety Trials. Brand Variety Stoneville Brooksville Overall irr. (clay) not irr. average bu/a bu/a bu/a Go Soy 56C U. of Arkansas UA 584HP U. of Arkansas Osage U. of Arkansas R U. of Arkansas R U. of Arkansas R U. of Arkansas UA 504C U. of Missouri S3-955C USDA-ARS JTN Mean CV LSD (0.05) R 7 79 Error DF 6 6 Table 4. Summary of -Year Yields for Maturity Group V Conventional for the 06 and 07 Mississippi Soybean Variety Trials. Brand Variety Stoneville Brooksville Overall irr. (clay) not irr. average bu/a bu/a bu/a U. of Arkansas Osage U. of Arkansas R U. of Arkansas UA 504C USDA-ARS JTN Mean Table 5. Summary of 3-Year Yields for Maturity Group V Conventional for the 05, 06, and 07 Mississippi Soybean Variety Trials. Brand Variety Brooksville Overall not irr. average bu/a bu/a U. of Arkansas Osage U. of Arkansas R USDA-ARS JTN Mean Mississippi Soybean Variety Trials, 07

22 Crop Summary BROOKSVILLE, BLACK BELT BRANCH Soybean plots were planted into a stale seedbed. Moisture at planting was adequate for germination. All plots quickly emerged to a stand. Rainfall was not overabundant, but it was timely. Temperatures were mild during most of the growing season. These timely rains supplied enough soil moisture to achieve good yields at this location. A warm, dry fall allowed for a timely harvest without difficulties. Planting date.....april Harvest date.....iv Roundup Ready, IV LibertyLink, and IV Conventional on September 8; V Roundup Ready, V LibertyLink, and V Conventional on September 7 Soil type brooksville silty clay Soil ph Soil fertility......p=h, K=M Previous crop....soybean Herbicides Preemergence Authority oz/a, Dual II 3 oz/a, oz/a, and 3 oz/a on April Postemergence Roundup Ready, LibertyLink, and Conventional 0.6 oz/a, oz/a, and 4 oz/a on June 9 Fertilizer added...preplant 300 lb/a BLACK BELT BRANCH Brooksville Rainfall Summary Inches April May June July August September Total Mississippi Agricultural and Forestry Experiment Station 5

23 Table 6. Roundup Ready Maturity Group IV Early Nonirrigated Soybean Varieties (Black Belt Branch Station, Brooksville). Brand Variety Yield Maturity date Plant height Lodging score 07 -yr. avg. 3-yr. avg. bu/a bu/a bu/a in -5 Dyna-Gro S45XS /3 9 Dyna-Gro 3RY /4 30 Progeny P4444RXS /9 9 Armor 46-D /3 3 Pioneer P40T6X 73. 8/8 30 AgriGold G4685RX 7.6 9/3 Asgrow AG46X /7 7 Dyna-Gro SX7846XS 7. 9/3 7 Progeny P 456RXS /8 Delta Grow DG 4680RR /4 30 Progeny P 460RXS /8 3 Armor ARX /9 9 Great Heart Seed GT-4540XS /5 3 AgriGold G4440RX / 7 Pioneer P45T74X /3 3 AgriGold G4380RX /9 7 Delta Grow 4670RR /3 Asgrow AG43X /5 3 MorSoy MS 466 RXT /3 3 NK S43-V3X /3 5 Credenz CZ 48 RY /3 30 Croplan RX456S /8 9 Asgrow AG46X /9 9 Asgrow AG46X /0 7 Dyna-Gro S43RY /3 3 Dyna-Gro S44XS /3 30 Dyna-Gro S45XS / 8 Asgrow AG45X /5 AGS GS45R /4 5 AGS GS46X /3 5 Progeny P455RX /5 8 NK S45-K5X /6 5 Credenz CZ 4590 RY /30 5 Armor 44-D /3 9 U. of Missouri S4-905R /5 0 Mean 66.5 CV 6.0 LSD (0.05) NS R 5.6 Error DF 68 6 Mississippi Soybean Variety Trials, 07

24 Table 7. Roundup Ready Maturity Group IV Late Nonirrigated Soybean Varieties (Black Belt Branch Station, Brooksville). Brand Variety Yield Maturity date Plant height Lodging score 07 -yr. avg. 3-yr. avg. bu/a bu/a bu/a in -5 USG 7497XT /8 36 USG 7487XTS /5 9 Great Heart Seed GT-487XS /9 8 AgriGold G4835RX /7 3 Petrus Seed 496 GT /8 3 USG 7496XTS / 8 Asgrow AG48X /3 8 Terral REV 497X * /3 3 Asgrow AG47X /4 3 Progeny P 499RXS /3 30 Pioneer P48T7X /30 3 Croplan RC /4 38 Terral REV 48A / 36 Terral REV 49R /3 33 Delta Grow DG 4835 RRX 7. 9/5 30 Armor ARX4807 * 7.8 9/3 6 Terral REV 4857X * 7.5 8/ 33 MorSoy MS 4846 RXT 7. 9/0 8 Delta Grow DGX 4845RRX 7.0 9/3 5 Progeny P 4757RY /3 3 Go Soy 49G /8 3 Terral REV 48A / 3 Delta Grow DG 4880RR /5 9 Delta Grow DG 4995 RR /9 3 Progeny P 485RX / 6 Great Heart Seed GT-50XS /7 34 AGS GS48R /3 4 USG 74K95RS /6 7 Great Heart Seed GT-47X 66. 9/8 3 Delta Grow DG 4790RR / 8 Terral REV 47R / 35 AgriGold G4990RX /8 3 Dyna-Gro S49XS /3 9 Croplan RX /9 33 Progeny P 4799RXS / 7 Delta Grow DG 4970RR / 37 Progeny P 4996RXS 6.3 8/3 30 Armor 48D / 8 Progeny P 486RX /9 3 Great Heart Seed GT-477CR / 30 Dyna-Gro S48XT /3 6 NK S48-RX / 9 Petrus Seed 479 GTS / 3 Delta Grow DG 485 RR/STS /4 8 Dyna-Gro SX7648XT * 5.3 8/4 5 U. of Missouri S4-546R * /30 7 Mean 65.6 CV 3.4 LSD (0.05) 4.7 R 59. Error DF 90 Mississippi Agricultural and Forestry Experiment Station 7

25 Table 8. Roundup Ready Maturity Group V Early Nonirrigated Soybean Varieties (Black Belt Branch Station, Brooksville). Brand Variety Yield Maturity date Plant height Lodging score 07 -yr. avg. 3-yr. avg. bu/a bu/a bu/a in -5 Pioneer P54A54X /5 4 Pioneer P55A49X /5 4 Terral REV 50A /0 3 USG 7547XT /6 6 Delta Grow DG 570RR/STS /6 33 Progeny P 506RXS /6 7 Asgrow AG55X /6 4 Armor 57D /5 5 Terral REV 56A / 0 AgriGold G5000RX /5 3 Terral REV 55A67 * / 5 Asgrow AG55X / 3 NK S5-Y7X /7 9 Asgrow AG5X /5 34 Dyna-Gro SX765XS * 6.6 9/8 3 Pioneer P50T9X 6.4 9/7 9 Delta Grow DG 5555RR / 36 Dyna-Gro S56XT /7 3 Great Heart Seed GT-534X 6. 9/7 5 MorSoy MS 5607 RXT /7 8 USG 7568XT /6 7 Terral REV 56R / 6 Delta Grow DG5580 RR / 3 Pioneer P50T56X 58. 9/3 6 Dyna-Gro S56RY /9 3 Progeny P 547RX /6 8 Armor 53-D /6 Armor ARX507 * 56. 9/3 3 Progeny P 5376RX /6 9 Progeny P 5688RX 5.5 9/6 6 U. of Missouri S4-907R * 5. 9/6 Go Soy 54G /8 3 Credenz CZ 5375 RY /7 U. of Arkansas UA 544RR /6 4 Progeny P 557RXS /9 5 Terral REV 5A /0 30 Mean 60. CV 4. LSD (0.05) 3.8 R 5.0 Error DF 70 Table 9. Roundup Ready Maturity Group V Late Nonirrigated Soybean Varieties (Black Belt Branch Station, Brooksville). Brand Variety Yield Maturity date Plant height Lodging score 07 -yr. avg. 3-yr. avg. bu/a bu/a bu/a in -5 USG 75B75R /9 7 Progeny P575RY /8 8 Asgrow AG59X / 3 U. of Arkansas UA 575GT / 5 Mean 58. CV 8.4 LSD (0.05) NS R 57.7 Error DF 6 8 Mississippi Soybean Variety Trials, 07

26 Table 30. Maturity Group IV LibertyLink Nonirrigated Soybean Varieties (Black Belt Branch Station, Brooksville). Brand Variety Yield Maturity date Plant height Lodging score 07 -yr. avg. 3-yr. avg. bu/a bu/a bu/a in -5 Terral REV 49L /4 3 Dyna-Gro S49LL /6 38 Delta Grow DG 4967LL /6 44 Delta Grow DG 4977LL/STS /9 40 Terral REV 45L57 * /9 8 Go Soy 49L /5 4 Credenz CZ 498 LL 5. 8/ 6 Credenz CZ 4938 LL 5.0 9/3 35 Go Soy 474LL / 9 Terral REV 48L /4 39 Credenz CZ 480 LL /5 3 Credenz HBK LL /6 36 Credenz CZ 488 LL /4 3 Delta Grow DG 478LL /6 34 Delta Grow DG 4587LL/STS /4 3 Dyna-Gro S45LL /3 33 Credenz CZ 4540LL /3 33 Credenz CZ 4548 LL 4.7 8/ 8 Credenz CZ 4044 LL /9 7 Credenz CZ 4 LL /9 7 Credenz CZ 4748 LL / 8 Credenz CZ 4308 LL /9 3 Credenz CZ 384 LL /9 3 Credenz CZ 405 LL /9 3 Credenz CZ 3945 LL 7.9 8/9 30 Mean 46.9 CV 8.8 LSD (0.05) 6.8 R 87.8 Error DF 48 Table 3. Maturity Group V LibertyLink Nonirrigated Soybean Varieties (Black Belt Branch Station, Brooksville). Brand Variety Yield Maturity date Plant height Lodging score 07 -yr. avg. 3-yr. avg. bu/a bu/a bu/a in -5 Credenz CZ 547 LL /8 6 Go Soy 55LL /6 37 Credenz CZ 555 LL / 43 Go Soy 55LL /6 35 Credenz CZ 577 LL / 30 Credenz CZ 550 LL /3 37 Go Soy 555LL / Credenz CZ 54 LL /5 33 Mean 54.7 CV 5.9 LSD (0.05) NS R 35 Error DF 4 Mississippi Agricultural and Forestry Experiment Station 9

27 Table 3. Maturity Group IV Conventional Nonirrigated Soybean Varieties (Black Belt Branch Station, Brooksville). Brand Variety Yield Maturity date Plant height Lodging score 07 -yr. avg. 3-yr. avg. bu/a bu/a bu/a in -5 U. of Missouri S3-385C * 53. 8/5 6 U. of Missouri S3-805C * /9 6 Go Soy Ireane /7 5 U. of Missouri S4-639C * 4. 9/0 4 U. of Missouri S3-0590C * /4 7 U. of Missouri S3-743C * 8.8 8/3 5 Mean 4. CV 8.0 LSD (0.05) 4. R 7 Error DF 0 Table 33. Maturity Group V Conventional Nonirrigated Soybean Varieties (Black Belt Branch Station, Brooksville). Brand Variety Yield Maturity date Plant height Lodging score 07 -yr. avg. 3-yr. avg. bu/a bu/a bu/a in -5 U. of Missouri S3-955C * / 8 USDA-ARS JTN / 8 U. of Arkansas R * / U. of Arkansas UA 504C /5 5 U. of Arkansas R-7999 * /7 5 Go Soy 56C / 3 U. of Arkansas Osage /6 U. of Arkansas UA 584HP /9 30 U. of Arkansas R-8346 * 38. 9/ 5 Mean 5.0 CV 0.5 LSD (0.05) 9.3 R 79.3 Error DF 6 0 Mississippi Soybean Variety Trials, 07

28 Crop Summary BROOKSVILLE, BROOKSVILLE FARM Soybean plots were planted in mid-april into a stale seedbed with adequate moisture for germination. All plots emerged to a stand. A couple of heavy rains were observed in the weeks after planting. The plots appeared to be stunted at this location throughout the growing season. Below-average yields were observed at this site. The stunted plants and lower yields are possibly the result of carryover corn herbicide from the previous crop, due to the lack of rainfall recorded during the fall and winter months, prior to planting. Planting date april 8 Harvest date iv Early and IV Late Roundup Ready on September 9; V Early and V Late Roundup Ready on September 7 Soil type brooksville silty clay Soil ph Soil fertility p=h, K=H Previous crop corn Fertilizer added broiler tons/a, 70 lb/a, lb/a, lb/a, and lb/a Herbicides Preplant 3 oz/a, oz/a, and 3 oz/a on March 4 Preemergence Authority oz/a, oz/a, and Dual II 4 oz/a on April 8 Postemergence 6 oz/a on May 6; and 6 oz/a and 3 oz/a on May 9 3. oz/a and 0.5 oz/a on July 3; and 4.7 oz/a and 0.5 lb/a on August 3 Irrigation dates center-pivot irrigation on July 8 (0.75 ), July 4 (0.5 ), July (0.75 ), and July 3 (0.75 ) BLACK BELT BRANCH & BROOKSVILLE FARM Brooksville Rainfall Summary Inches April May June July August September Total Mississippi Agricultural and Forestry Experiment Station

29 Table 34. Roundup Ready Maturity Group IV Early Irrigated Soybean Varieties (Brooksville Farm, Brooksville). Brand Variety Yield Maturity date Plant height Lodging score 07 -yr. avg. 3-yr. avg. bu/a bu/a bu/a in -5 Great Heart Seed GT-4540XS 6.5 8/3 6 Dyna-Gro SX7846XS /5 3 Armor ARX /9 9 Asgrow AG46X /9 9 Asgrow AG46X /3 6 Dyna-Gro S45XS /3 5 Pioneer P45T74X /6 3 AgriGold G4440RX 54. 8/5 30 MorSoy MS 466 RXT /3 6 Armor 46-D /30 7 Dyna-Gro 3RY /9 30 Progeny P4444RXS 5.5 8/5 4 Pioneer P40T6X /5 6 Asgrow AG43X /4 7 Progeny P 456RXS /5 5 AgriGold G4685RX / 7 Progeny P 460RXS /3 5 Armor 44-D /6 7 Dyna-Gro S45XS /3 5 Asgrow AG45X /7 5 Dyna-Gro S44XS /4 7 Delta Grow 4670RR /6 5 Progeny P455RX 44. 8/3 6 AgriGold G4380RX 43. 8/4 8 NK S43-V3X 4.7 8/5 5 AGS GS45R /5 6 Croplan RX456S 4. 9/ 4 Asgrow AG46X /3 3 NK S45-K5X /5 5 Credenz CZ 48 RY /5 7 Credenz CZ 4590 RY / 6 Delta Grow DG 4680RR /5 6 AGS GS46X /6 8 Dyna-Gro S43RY /4 3 U. of Missouri S4-905R 7.5 8/4 7 Mean 47. CV.5 LSD (0.05) 8.8 R 80 Error DF 68 No 3-year average. Mississippi Soybean Variety Trials, 07

30 Table 35. Roundup Ready Maturity Group IV Late Irrigated Soybean Varieties (Brooksville Farm, Brooksville). Brand Variety Yield Maturity date Plant height Lodging score 07 -yr. avg. 3-yr. avg. bu/a bu/a bu/a in -5 Delta Grow DGX 4845RRX 6.0 9/9 7 Armor 48D / 9 Great Heart Seed GT-47X /3 9 MorSoy MS 4846 RXT /7 3 Petrus Seed 496 GT 57. 9/8 30 Terral REV 4857X / 9 Progeny P 485RX / 6 Go Soy 49G /8 6 Asgrow AG48X /6 7 USG 7497XT /9 34 Dyna-Gro S48XT /8 5 Terral REV 497X 5.6 9/ 9 Armor ARX /3 8 Delta Grow DG 4835 RRX 5. 8/9 8 Delta Grow DG 4995 RR 5. 9/0 3 Terral REV 47R /9 8 Terral REV 48A /4 5 Pioneer P48T7X /4 7 AGS GS48R /6 3 Croplan RX /7 Asgrow AG47X / 3 USG 7487XTS /3 7 Progeny P 499RXS / 5 Progeny P 4799RXS / 6 AgriGold G4835RX /3 4 Great Heart Seed GT-487XS 48. 9/3 8 Croplan RC /4 3 USG 74K95RS 46. 9/7 9 NK S48-RX / 6 Delta Grow DG 4880RR / 7 Terral REV 48A /7 6 Great Heart Seed GT-50XS /3 9 Great Heart Seed GT-477CR /3 Progeny P 4996RXS /6 7 Progeny P 486RX 43. 9/7 5 Delta Grow DG 4790RR /4 3 AgriGold G4990RX 4.0 9/ 6 Dyna-Gro S49XS /3 6 Delta Grow DG 4970RR /4 3 Dyna-Gro SX7648XT /7 0 Terral REV 49R /8 9 Progeny P 4757RY / 4 USG 7496XTS / 5 Delta Grow DG 485 RR/STS /30 6 Petrus Seed 479 GTS /4 5 U. of Missouri S4-546R 7.0 8/3 Mean 47. CV 9. LSD (0.05) 7. R 80.4 Error DF 90 No 3-year average. Mississippi Agricultural and Forestry Experiment Station 3

31 Table 36. Roundup Ready Maturity Group V Early Irrigated Soybean Varieties (Brooksville Farm, Brooksville). Brand Variety Yield Maturity date Plant height Lodging score 07 -yr. avg. 3-yr. avg. bu/a bu/a bu/a in -5 Pioneer P54A54X /5 3 Pioneer P55A49X 8.9 9/8 4 Asgrow AG55X /8 39 Terral REV 50A / 33 Progeny P 5688RX /7 9 MorSoy MS 5607 RXT 66. 9/7 3 Asgrow AG55X /6 8 USG 7568XT /5 35 Armor 57D /5 3 Dyna-Gro S56XT /6 3 Terral REV 56A /0 30 Terral REV 55A67 * 6.0 9/ 3 Progeny P 547RX /7 7 USG 7547XT 60. 9/6 6 U. of Arkansas UA 544RR 58. 9/5 30 Dyna-Gro S56RY /7 35 Pioneer P50T56X /3 30 Delta Grow DG 5555RR /0 3 Armor 53-D /5 9 Delta Grow DG 570RR/STS /8 33 Great Heart Seed GT-534X 5.4 9/3 4 Progeny P 5376RX 5.0 9/5 8 Go Soy 54G /6 9 Progeny P 506RXS 5. 9/4 6 Terral REV 5A /3 37 Pioneer P50T9X /3 34 AgriGold G5000RX / 6 Asgrow AG5X / 3 Dyna-Gro SX765XS * /7 9 U. of Missouri S4-907R * /6 6 Delta Grow DG5580 RR 46. 9/ 3 Terral REV 56R /9 30 Armor ARX507 * / 6 NK S5-Y7X / 6 Progeny P 557RXS /7 5 Credenz CZ 5375 RY /0 5 Mean 56.8 CV 8.3 LSD (0.05) 7.7 R 87.9 Error DF 70 No 3-year average. Table 37. Roundup Ready Maturity Group IV Late Irrigated Soybean Varieties (Brooksville Farm, Brooksville). Brand Variety Yield Maturity date Plant height Lodging score 07 -yr. avg. 3-yr. avg. bu/a bu/a bu/a in -5 USG 75B75R /0 30 Asgrow AG59X / 7 Progeny P575RY /0 3 U. of Arkansas UA 575GT / 9 Mean 57.8 CV 3.3 LSD (0.05) NS R 5. Error DF 6 No 3-year average. 4 Mississippi Soybean Variety Trials, 07

32 Crop Summary CLARKSDALE IRRIGATED, DULANEY FARMS Plots were planted into a stale seedbed that had been hipped the previous fall. Soil moisture was optimum at planting, and plots quickly emerged to a good stand. Stem canker was observed at this location, and its presence resulted in a severe reduction of yield potential for varieties observed to be susceptible to the disease. The overall historical average yield was reduced for this location. However, some varieties still exhibited good yield potential, even in the presence of stem canker. Harvest was conducted in a timely manner. Planting date....may 0 Harvest date....iv Early and IV Late Roundup Ready on September ; and V Early and V Late Roundup Ready on October 6 Soil type alligator clay and Forestdale silty clay Soil ph Soil fertility.....p=h, K=H + Previous crop...soybean Herbicides......Preemergence Authority 0 oz/a, 4 oz/a, and 3 oz/a Postemergence oz/a and 0.6 oz/a Irrigation Furrow irrigated as needed DULANEY FARMS Clarksdale Rainfall Summary Inches May June July August September October Total Mississippi Agricultural and Forestry Experiment Station 5

33 Table 38. Roundup Ready Maturity Group IV Early Irrigated Soybean Varieties (Dulaney Farms, Coahoma County). Brand Variety Yield Maturity date Plant height Lodging score 07 -yr. avg. 3-yr. avg. bu/a bu/a bu/a in -5 Great Heart Seed GT-4540XS Dyna-Gro S45XS Progeny P 456RXS Asgrow AG43X Dyna-Gro S45XS Armor 46-D Pioneer P45T74X Progeny P 460RXS Asgrow AG45X Asgrow AG46X Dyna-Gro 3RY Delta Grow DG 4680RR Delta Grow 4670RR MorSoy MS 466 RXT Asgrow AG46X Asgrow AG46X Croplan RX456S AGS GS45R NK S45-K5X Dyna-Gro S43RY AgriGold G4380RX Progeny P4444RXS NK S43-V3X AgriGold G4685RX Credenz CZ 4590 RY Pioneer P40T6X Credenz CZ 48 RY AGS GS46X U. of Missouri S4-905R Dyna-Gro S44XS Armor 44-D Armor ARX AgriGold G4440RX Dyna-Gro SX7846XS Progeny P455RX Mean 68.0 CV 6.7 LSD (0.05) 7.43 R 9.5 Error DF 68 No maturity dates taken. 6 Mississippi Soybean Variety Trials, 07

34 Table 39. Roundup Ready Maturity Group IV Late Irrigated Soybean Varieties (Dulaney Farms, Coahoma County). Brand Variety Yield Maturity date Plant height Lodging score 07 -yr. avg. 3-yr. avg. bu/a bu/a bu/a in -5 MorSoy MS 4846 RXT Delta Grow DGX 4845RRX Armor 48D Asgrow AG47X Dyna-Gro S48XT Great Heart Seed GT-47X Progeny P 486RX Asgrow AG48X Croplan RX Progeny P 485RX Terral REV 4857X Progeny P 4799RXS Pioneer P48T7X Terral REV 48A Delta Grow DG 4880RR Croplan RC Delta Grow DG 4970RR Delta Grow DG 485 RR/STS Dyna-Gro SX7648XT NK S48-RX Delta Grow DG 4790RR USG 7496XTS Great Heart Seed GT-477CR Progeny P 4757RY Terral REV 49R Terral REV 497X USG 7497XT Terral REV 47R Terral REV 48A Delta Grow DG 4995 RR Petrus Seed 479 GTS U. of Missouri S4-546R USG 74K95RS AGS GS48R Great Heart Seed GT-487XS Progeny P 499RXS Delta Grow DG 4835 RRX AgriGold G4835RX Armor ARX Go Soy 49G Petrus Seed 496 GT USG 7487XTS Progeny P 4996RXS Great Heart Seed GT-50XS AgriGold G4990RX Dyna-Gro S49XS Mean 66.3 CV 6.6 LSD (0.05) 7. R 97.6 Error DF 90 No maturity dates taken. Mississippi Agricultural and Forestry Experiment Station 7

35 Table 40. Roundup Ready Maturity Group V Early Irrigated Soybean Varieties (Dulaney Farms, Coahoma County). Brand Variety Yield Maturity date Plant height Lodging score 07 -yr. avg. 3-yr. avg. bu/a bu/a bu/a in -5 Asgrow AG55X Delta Grow DG5580 RR Pioneer P54A54X Pioneer P55A49X Terral REV 5A Dyna-Gro S56RY Asgrow AG55X Credenz CZ 5375 RY Terral REV 50A Progeny P 5376RX Great Heart Seed GT-534X Terral REV 55A67 * Dyna-Gro SX765XS * Progeny P 557RXS Pioneer P50T56X Armor 53-D Delta Grow DG 570RR/STS Terral REV 56R Terral REV 56A AgriGold G5000RX U. of Missouri S4-907R * Progeny P 506RXS USG 7547XT Progeny P 547RX NK S5-Y7X U. of Arkansas UA 544RR Pioneer P50T9X Delta Grow DG 5555RR Go Soy 54G Armor 57D USG 7568XT Dyna-Gro S56XT Progeny P 5688RX MorSoy MS 5607 RXT Armor ARX507 * Asgrow AG5X Mean 58.9 CV 7.5 LSD (0.05) 7.3 R Error DF 70 No maturity dates taken. 8 Mississippi Soybean Variety Trials, 07

36 Table 4. Roundup Ready Maturity Group V Late Irrigated Soybean Varieties (Dulaney Farms, Coahoma County). Brand Variety Yield Maturity date Plant height Lodging score 07 -yr. avg. 3-yr. avg. bu/a bu/a bu/a in -5 Asgrow AG59X USG 75B75R Progeny P575RY U. of Arkansas UA 575GT Mean 63.3 CV 5.7 LSD (0.05) NS R 67.9 Error DF 6 No maturity dates taken. Mississippi Agricultural and Forestry Experiment Station 9

37 Crop Summary HICKORY FLAT, SID AYRES FARM Plots were planted no-till into the previous year s soybean residue. Soil moisture at planting was optimum for germination and emergence. All plots emerged to a good stand. Timely rains fell throughout the season, supplying ample soil moisture throughout. Plots were harvested in a timely manner, without difficulty, and excellent yields were observed at this location. Planting date april Harvest date iv Early and IV Late Roundup Ready on September 5; and V Early and V Late Roundup Ready on October 6 Soil type arkabutla silt loam Soil ph Soil fertility p=h, K=H Previous crop soybeans Herbicides Preemergence Authority 0 oz/a, Dual II 4 oz/a, 3 oz/a, and oz/a on April Postemergence Roundup 3 oz/a, 0.6 oz/a, and Section oz/a on June 0 AYRES FARM Hickory Flat Rainfall Summary Inches April May June July August September October Total Mississippi Soybean Variety Trials, 07

38 Table 4. Roundup Ready Maturity Group IV Early Nonirrigated Soybean Varieties (Sid Ayres Farm, Hickory Flat). Brand Variety Yield Maturity date Plant height Lodging score 07 -yr. avg. 3-yr. avg. bu/a bu/a bu/a in -5 Dyna-Gro SX7846XS Armor ARX MorSoy MS 466 RXT Great Heart Seed GT-4540XS Dyna-Gro S43RY Credenz CZ 48 RY Armor 44-D Armor 46-D Delta Grow DG 4680RR Dyna-Gro S44XS Dyna-Gro S45XS Progeny P 460RXS Progeny P455RX AgriGold G4380RX Credenz CZ 4590 RY Croplan RX456S AgriGold G4440RX Asgrow AG46X Dyna-Gro S45XS Pioneer P45T74X Asgrow AG43X Asgrow AG46X Asgrow AG45X Asgrow AG46X Delta Grow 4670RR Progeny P 456RXS AGS GS45R Progeny P4444RXS Pioneer P40T6X Dyna-Gro 3RY AgriGold G4685RX AGS GS46X NK S45-K5X NK S43-V3X U. of Missouri S4-905R Mean 9.6 CV 8.8 LSD (0.05) 3. R 49 Error DF 68 No maturity dates taken. Mississippi Agricultural and Forestry Experiment Station 3

39 Table 43. Roundup Ready Maturity Group IV Late Nonirrigated Soybean Varieties (Sid Ayres Farm, Hickory Flat). Brand Variety Yield Maturity date Plant height Lodging score 07 -yr. avg. 3-yr. avg. bu/a bu/a bu/a in -5 Delta Grow DG 485 RR/STS Pioneer P48T7X Progeny P 485RX Delta Grow DG 4970RR Delta Grow DG 4835 RRX Armor 48D Terral REV 497X * Progeny P 499RXS Dyna-Gro S49XS Asgrow AG47X Armor ARX4807 * AgriGold G4835RX Terral REV 47R NK S48-RX Progeny P 4799RXS Croplan RX MorSoy MS 4846 RXT Petrus Seed 496 GT Terral REV 4857X * Great Heart Seed GT-47X AGS GS48R Delta Grow DG 4995 RR Asgrow AG48X Delta Grow DGX 4845RRX Terral REV 48A Go Soy 49G Great Heart Seed GT-487XS AgriGold G4990RX USG 7487XTS Dyna-Gro S48XT Great Heart Seed GT-477CR Delta Grow DG 4880RR Progeny P 486RX USG 7496XTS Terral REV 48A Terral REV 49R Dyna-Gro SX7648XT * Delta Grow DG 4790RR USG 74K95RS Progeny P 4757RY Croplan RC Great Heart Seed GT-50XS Petrus Seed 479 GTS U. of Missouri S4-546R * USG 7497XT Progeny P 4996RXS Mean 86.9 CV 7.4 LSD (0.05) 0.4 R 69. Error DF 90 No maturity dates taken. 3 Mississippi Soybean Variety Trials, 07

40 Table 44. Roundup Ready Maturity Group V Early Nonirrigated Soybean Varieties (Sid Ayres Farm, Hickory Flat). Brand Variety Yield Maturity date Plant height Lodging score 07 -yr. avg. 3-yr. avg. bu/a bu/a bu/a in -5 Asgrow AG5X Terral REV 56A Asgrow AG55X Delta Grow DG 570RR/STS Progeny P 506RXS Dyna-Gro SX765XS * Credenz CZ 5375 RY Pioneer P50T9X Terral REV 5A Pioneer P50T56X AgriGold G5000RX USG 7547XT Pioneer P54A54X Delta Grow DG 5555RR USG 7568XT Delta Grow DG5580 RR Terral REV 50A Progeny P 557RXS Progeny P 547RX 9. 3 MorSoy MS 5607 RXT Dyna-Gro S56XT Terral REV 56R Asgrow AG55X Progeny P 5688RX Dyna-Gro S56RY NK S5-Y7X U. of Arkansas UA 544RR Armor 57D Terral REV 55A67 * Pioneer P55A49X U. of Missouri S4-907R * Progeny P 5376RX Great Heart Seed GT-534X Armor 53-D Armor ARX507 * Go Soy 54G Mean 9.9 CV 7.8 LSD (0.05).7 R 65.0 Error DF 70 No maturity dates taken. Table 45. Roundup Ready Maturity Group V Late Nonirrigated Soybean Varieties (Sid Ayres Farm, Hickory Flat). Brand Variety Yield Maturity date Plant height Lodging score 07 -yr. avg. 3-yr. avg. bu/a bu/a bu/a in -5 USG 75B75R Progeny P575RY U. of Arkansas UA 575GT Asgrow AG59X Mean 8.6 CV.7 LSD (0.05) NS R 69.5 Error DF 6 No maturity dates taken. Mississippi Agricultural and Forestry Experiment Station 33

41 Crop Summary Soybean plots were planted into a stale seedbed following the previous season s rice crop. Plots were planted into soil with sufficient moisture for germination. All plots quickly emerged to a good stand. Timely rainfall LONGWOOD, STEELE FARMS and furrow irrigation allowed for adequate soil moisture throughout the growing season. Harvest was completed in a timely manner, and good yields were observed at this location. Planting date....may Harvest date....october 4 Soil type sharkey and Dowling clay Soil ph Soil fertility......p=h +, K=H + Previous crop...rice Herbicides......Preemergence Authority 0 oz/a, Dual II 4 oz/a, 3 oz/a, and oz/a on May Irrigation Furrow irrigated as needed STEELE FARMS Longwood Rainfall Summary Inches May June July August September October Total Mississippi Soybean Variety Trials, 07

42 Table 46. Roundup Ready Maturity Group IV Early Irrigated Soybean Varieties (Steele Farms, Longwood). Brand Variety Yield Maturity date Plant height Lodging score 07 -yr. avg. 3-yr. avg. bu/a bu/a bu/a in -5 Progeny P 460RXS Asgrow AG46X Armor 46-D Asgrow AG45X Dyna-Gro S45XS MorSoy MS 466 RXT Dyna-Gro S45XS Croplan RX456S NK S43-V3X Asgrow AG43X NK S45-K5X Delta Grow DG 4680RR AGS GS46X AgriGold G4440RX Progeny P 456RXS Asgrow AG46X Pioneer P45T74X Great Heart Seed GT-4540XS Armor ARX Delta Grow 4670RR Dyna-Gro S44XS Dyna-Gro S43RY Dyna-Gro SX7846XS Armor 44-D AgriGold G4380RX Dyna-Gro 3RY Progeny P455RX AGS GS45R Progeny P4444RXS Pioneer P40T6X Asgrow AG46X Credenz CZ 4590 RY Credenz CZ 48 RY U. of Missouri S4-905R AgriGold G4685RX Mean 89.0 CV 6.6 LSD (0.05) 9.6 R 65.9 Error DF 68 No 3-year average. Mississippi Agricultural and Forestry Experiment Station 35

43 Table 47. Roundup Ready Maturity Group IV Late Irrigated Soybean Varieties (Steele Farms, Longwood). Brand Variety Yield Maturity date Plant height Lodging score 07 -yr. avg. 3-yr. avg. bu/a bu/a bu/a in -5 MorSoy MS 4846 RXT Progeny P 486RX Progeny P 485RX Dyna-Gro S48XT Terral Seed REV 4857X * Delta Grow DGX 4845RRX Asgrow AG47X Croplan RX Asgrow AG48X Armor 48D Terral Seed REV 48A Croplan RC Great Heart Seed GT-47X Petrus Seed 496 GT Terral Seed REV 497X * Pioneer P48T7X Dyna-Gro SX7648XT * AGS GS48R Delta Grow DG 4790RR Go Soy 49G Progeny P 4757RY Terral Seed REV 49R Dyna-Gro S49XS NK Brand S48-RX Terral Seed REV 47R Delta Grow DG 4835 RRX Progeny P 4799RXS Delta Grow DG 4995 RR Armor ARX4807 * Terral Seed REV 48A AgriGold G4835RX Univ. of Missouri S4-546R * AgriGold G4990RX Great Heart Seed GT-487XS Progeny P 499RXS Great Heart Seed GT-477CR USG 7487XTS Delta Grow DG 4880RR Delta Grow DG 485 RR/STS USG 7496XTS Delta Grow DG 4970RR Petrus Seed 479 GTS USG 7497XT Progeny P 4996RXS Great Heart Seed GT-50XS USG 74K95RS Mean 90.7 CV 8.0 LSD (0.05).8 R 76. Error DF 90 No 3-year average. 36 Mississippi Soybean Variety Trials, 07

44 Table 48. Roundup Ready Maturity Group V Early Irrigated Soybean Varieties (Steele Farms, Longwood). Brand Variety Yield Maturity date Plant height Lodging score 07 -yr. avg. 3-yr. avg. bu/a bu/a bu/a in -5 Asgrow AG55X MorSoy MS 5607 RXT USG 7568XT Pioneer P54A54X Pioneer P55A49X Dyna-Gro S56RY Terral REV 55A67 * Terral REV 50A Delta Grow DG 570RR/STS Asgrow AG55X Dyna-Gro S56XT Progeny P 547RX Armor 53-D Great Heart Seed GT-534X Asgrow AG5X Delta Grow DG5580 RR Progeny P 5376RX Armor ARX507 * USG 7547XT Progeny P 5688RX Dyna-Gro SX765XS * Progeny P 557RXS AgriGold G5000RX Armor 57D Pioneer P50T56X Terral REV 5A U. of Missouri S4-907R * Terral REV 56R Credenz CZ 5375 RY Terral REV 56A Delta Grow DG 5555RR NK S5-Y7X Go Soy 54G Pioneer P50T9X U. of Arkansas UA 544RR Progeny P 506RXS 6. 4 Mean 84.0 CV.7 LSD (0.05) 6.0 R 53.5 Error DF 70 No 3-year average. Table 49. Roundup Ready Maturity Group V Late Irrigated Soybean Varieties (Steele Farms, Longwood). Brand Variety Yield Maturity date Plant height Lodging score 07 -yr. avg. 3-yr. avg. bu/a bu/a bu/a in -5 Asgrow AG59X Progeny P575RY USG 75B75R U. of Arkansas UA 575GT Mean 86.9 CV 5.5 LSD (0.05) 9.6 R 80.7 Error DF 6 No 3-year average. Mississippi Agricultural and Forestry Experiment Station 37

45 Table 50. Maturity Group IV LibertyLink Irrigated Soybean Varieties (Steele Farms, Longwood). Brand Variety Yield Maturity date Plant height Lodging score 07 -yr. avg. 3-yr. avg. bu/a bu/a bu/a in -5 Dyna-Gro S49LL Delta Grow DG 4967LL Terral REV 49L Dyna-Gro S45LL Credenz CZ 498 LL Credenz CZ 4308 LL Credenz HBK LL Credenz CZ 4 LL Terral REV 48L Credenz CZ 480 LL Delta Grow DG 4587LL/STS Credenz CZ 4540LL Credenz CZ 4548 LL Go Soy 49L Credenz CZ 4748 LL Terral REV 45L57 * Credenz CZ 4938 LL Credenz CZ 3945 LL Delta Grow DG 478LL Go Soy 474LL Credenz CZ 4044 LL Credenz CZ 384 LL Credenz CZ 405 LL Credenz CZ 488 LL Delta Grow DG 4977LL/STS Mean 78.8 CV 7.9 LSD (0.05) 0. R 5.6 Error DF 48.0 No 3-year average. Table 5. Maturity Group V LibertyLink Irrigated Soybean Varieties (Steele Farms, Longwood). Brand Variety Yield Maturity date Plant height Lodging score 07 -yr. avg. 3-yr. avg. bu/a bu/a bu/a in -5 Go Soy 55LL Go Soy 555LL Credenz CZ 555 LL Credenz CZ 547 LL Go Soy 55LL Credenz CZ 54 LL Credenz CZ 577 LL Credenz CZ 550 LL Mean 77.5 CV 4. LSD (0.05) NS R 36.3 Error DF 4 No 3-year average. 38 Mississippi Soybean Variety Trials, 07

46 Crop Summary OLIVE BRANCH, TODD WILLIAMS FARM Plots were planted into a seedbed that had been prepared using vertical tillage equipment. Soil moisture at planting was optimum for germination. All plots emerged to a good stand. The plot area received adequate rainfall throughout the growing season, resulting in good yields. Lodging was observed at this location, but harvest was completed successfully and in a timely manner. Planting date may 9 Harvest date october 9 Soil type collins silt loam Soil ph Soil fertility p=h +, K=H Previous crop corn Fertilizer Variable rate Herbicides Preemergence 6 oz/a, 4 oz/a, 0.5 lb/a, and 0.5% Postemergence 3 oz/a, 6 oz/a, and 6 oz/a 4 oz/a and 3 oz/a 4.9 oz/a and Intrepid 4 oz/a on September 5 TODD WILLIAMS FARM Olive Branch Rainfall Summary Inches May June July August September October Total Mississippi Agricultural and Forestry Experiment Station 39

47 Table 5. Roundup Ready Maturity Group IV Early Nonirrigated Soybean Varieties (Todd Williams Farm, Olive Branch). Brand Variety Yield Maturity date Plant height Lodging score 07 -yr. avg. 3-yr. avg. bu/a bu/a bu/a in -5 Pioneer P45T74X / 47 4 AgriGold G4685RX / 46 3 AgriGold G4440RX 9.8 0/ 45 Asgrow AG46X / 43 Dyna-Gro SX7846XS 9.5 0/ 47 4 MorSoy MS 466 RXT 9.3 0/ 45 3 Asgrow AG45X / 43 4 Delta Grow 4670RR / Credenz CZ 4590 RY / 43 4 Armor 46-D / 45 4 Dyna-Gro S45XS / Progeny P4444RXS /5 4 3 Dyna-Gro S44XS / 45 Asgrow AG46X / 44 4 Dyna-Gro S43RY / 43 5 Progeny P 460RXS / 43 Progeny P455RX / 43 3 Dyna-Gro 3RY / Armor 44-D / 45 3 Asgrow AG43X / 45 3 Armor ARX / 44 3 NK S45-K5X 83. 0/ 4 Asgrow AG46X / 45 4 Pioneer P40T6X 8.7 9/ Great Heart Seed GT-4540XS 8.6 0/ 45 4 Progeny P 456RXS 8.4 9/ U. of Missouri S4-905R 8.3 9/ Delta Grow DG 4680RR / AgriGold G4380RX / 46 3 Credenz CZ 48 RY / Croplan RX456S / 47 Dyna-Gro S45XS / 48 5 AGS GS46X / 40 4 NK S43-V3X / AGS GS45R / Mean 84.8 CV 9. LSD (0.05).7 R 48.6 Error DF 68 No 3-year average. 40 Mississippi Soybean Variety Trials, 07

48 Table 53. Roundup Ready Maturity Group IV Late Nonirrigated Soybean Varieties (Todd Williams Farm, Olive Branch). Brand Variety Yield Maturity date Plant height Lodging score 07 -yr. avg. 3-yr. avg. bu/a bu/a bu/a in -5 Progeny P 4799RXS 0.3 0/ Progeny P 486RX 0.3 9/5 38 NK S48-RX 0. 9/8 43 MorSoy MS 4846 RXT 00. 9/8 4 Delta Grow DG 4995 RR 99. 9/8 38 Terral REV 47R / Progeny P 485RX / Great Heart Seed GT-50XS /5 5 Great Heart Seed GT-487XS /8 4 Dyna-Gro SX7648XT * /8 47 Go Soy 49G / Asgrow AG47X /8 45 Great Heart Seed GT-47X / Delta Grow DGX 4845RRX /8 4 Terral REV 48A / Progeny P 4996RXS / AGS GS48R / Asgrow AG48X / 47 3 Progeny P 499RXS /5 4 3 AgriGold G4835RX 94. 9/ 4 Armor 48D / Croplan RX /3 37 Terral REV 4857X * 93. 9/ Delta Grow DG 4835 RRX 9.9 9/ 4 Dyna-Gro S49XS /8 5 USG 7487XTS /8 43 AgriGold G4990RX /8 50 Croplan RC / USG 74K95RS /5 40 Pioneer P48T7X / Petrus Seed 496 GT /5 39 Terral REV 48A / Dyna-Gro S48XT /8 39 Terral REV 497X * / USG 7496XTS / Delta Grow DG 485 RR/STS / Armor ARX4807 * /5 4 Terral REV 49R / USG 7497XT /5 4 3 Great Heart Seed GT-477CR / Delta Grow DG 4790RR /8 4 Delta Grow DG 4880RR / U. of Missouri S4-546R * /8 4 Petrus Seed 479 GTS /8 44 Delta Grow DG 4970RR /5 5 5 Progeny P 4757RY / Mean 9. CV 4.3 LSD (0.05) NS R 33.4 Error DF 90 No 3-year average. Mississippi Agricultural and Forestry Experiment Station 4

49 Table 54. Roundup Ready Maturity Group V Early Nonirrigated Soybean Varieties (Todd Williams Farm, Olive Branch). Brand Variety Yield Maturity date Plant height Lodging score 07 -yr. avg. 3-yr. avg. bu/a bu/a bu/a in -5 Dyna-Gro S56RY / Pioneer P55A49X 0. 0/9 39 MorSoy MS 5607 RXT / USG 7568XT / 38 Dyna-Gro S56XT / 35 4 Armor 57D / Pioneer P54A54X 96. 0/ 38 Armor 53-D /9 48 Progeny P 5688RX 94. 0/ 39 4 Armor ARX507 * 9. 0/9 4 Go Soy 54G / 39 4 Asgrow AG5X / 47 3 Terral REV 50A / 47 3 U. of Missouri S4-907R * /9 40 USG 7547XT /9 48 Asgrow AG55X /9 34 Dyna-Gro SX765XS * / 44 Delta Grow DG 570RR/STS / 45 Terral REV 56R / Pioneer P50T9X 85. 0/9 47 Terral REV 56A / Progeny P 506RXS 84. 0/9 4 3 Progeny P 557RXS 8.6 0/ Progeny P 547RX 8.4 0/ Terral REV 55A67 * 8.4 0/ 39 Asgrow AG55X / 5 3 Delta Grow DG5580 RR /9 4 3 NK S5-Y7X / 45 3 AgriGold G5000RX / 45 4 Great Heart Seed GT-534X / U. of Arkansas UA 544RR / 43 5 Terral REV 5A / 48 5 Credenz CZ 5375 RY / 40 3 Delta Grow DG 5555RR / 39 Progeny P 5376RX / Pioneer P50T56X 7. 0/ 46 5 Mean 86.6 CV 7.9 LSD (0.05). R 70.3 Error DF 70 No 3-year average. Table 55. Roundup Ready Maturity Group V Late Nonirrigated Soybean Varieties (Todd Williams Farm, Olive Branch). Brand Variety Yield Maturity date Plant height Lodging score 07 -yr. avg. 3-yr. avg. bu/a bu/a bu/a in -5 Progeny P575RY U. of Arkansas UA 575GT USG 75B75R Asgrow AG59X Mean 83.7 CV 9.3 LSD (0.05) NS R 75. Error DF 6 No 3-year average. 4 Mississippi Soybean Variety Trials, 07

50 Crop Summary RAYMOND, BROWN LOAM BRANCH Plots were planted no-till into soil with adequate moisture for germination. All plots emerged to a good stand. Frequent rainfall throughout the season promoted excellent growing conditions, especially for a dryland location. Multiple insecticide applications were made to control red-banded stink bugs during the season. Harvest was completed in a timely manner, and excellent yields were observed at this location. Planting date april 9 Harvest date iv Early and IV Late Roundup Ready and IV LibertyLink on September 5; and V Early and V Late Roundup Ready and V LibertyLink on September 6 Soil type loring silt loam Soil ph Soil fertility p=m, K=M Fertilizer 5 lb/a (fall applied) Previous crop wheat Herbicides Preemergence Authority 0 oz/a, Dual II Magnum 4 oz/a, 3 oz/a, and oz/a on April 9 Postemergence Section oz/a and 0.6 oz/a on July oz/a and 0.5 lb/a on July 6 and July 0; 4.5 oz/a and 4 oz/a on August ; and lb/a on September 6 BROWN LOAM BRANCH Raymond Rainfall Summary Inches April May June July August September Total Mississippi Agricultural and Forestry Experiment Station 43