KNOW YOUR SUNFLOWER IMPROVEMENT TEAM Jerry J. Johnson, Extension Specialist Crop Production (97) 49-454 James P. Hain, Research Associate, Soil and Crop Sciences (97) 345-2259 Cynthia L. Johnson, Research Associate, Soil and Crop Sciences (97) 49-94 Ron Meyer, Extension Agronomist, Golden Plains Area (79) 346-557 Denver Five Colorado sunflower trial locations and the 997 acreage harvested for the top producing counties. Weld 6,3 Adams 3,9 Arapahoe 4 Morgan 3,2 Akron Julesburg Logan 4,8 Washington 4,6 Sedgwick 4,7 Phillips 2,6 Yuma 9,3 Idalia Elbert,2 Lincoln,2 Bethune Kit Carson 24,5 Cheyenne Wells Cheyenne,5 Kiowa 2,8 ACKNOWLEDGMENTS The authors wish to express their gratitude to the Colorado farmers who generously contributed the use of their land, equipment, and time to conduct these trials for the good of all Colorado sunflower producers and dealers: Bethune - George Stahlecker; Cheyenne Wells - Dennis Campbell; Idalia- Jim Roberts; Julesburg - Richard Fryrear. We also acknowledge the participation of the Colorado Experiment Station at Akron (Central Great Plains Field Station). Triumph Seed Co., Inc. (P.O. Box 5, Ralls TX 79357) contributed oil analyzes and Red River Commodities, Inc. (32 East College Drive, Colby KS 677) contributed seed-sizing analyzes for which we are grateful.
Technical Report TR 98-9 Agricultural Department of Cooperative December Experiment Soil and Crop Extension 998 Station Sciences TABLE OF CONTENTS Introduction... The 998 Sunflower Season... Cultural conditions for hybrid sunflower testing in 998 Table... 2 Oil Sunflower Performance Data... 2 Akron Dryland Table 2-3... 2 Bethune Irrigated Table 4-5... 3 Cheyenne Wells Dryland Table 6... 4 Idalia Dryland Table 7-8... 5 Julesburg Dryland Table 9-... 6 Confection Sunflower Performance Data... 7 Akron Dryland Table -3... 7 Cheyenne Wells Dryland Table 4-5... 8 Idalia Dryland Table 6-8... 9 Julesburg Dryland Table 9-2... Seed Company Entrants in the 998 Colorado Sunflower Performance Trials... Entry Forms for 999 Trials... Additional Copy Request... i
998 COLORADO SUNFLOWER PERFORMANCE TRIALS Introduction Sunflowers have become an important crop in northeastern Colorado. Sunflower acreage (mostly in Kit Carson, Cheyenne, and Yuma counties) rose from almost nothing in 99 to a high of 5, acres in 995. Confection and oil sunflowers are about equally important in terms of farm receipts. The growth in Colorado sunflower acreage signifies a shift away from the predominant winter wheat/fallow cropping system to a wheat/spring crop/fallow system. Colorado State University s cropping systems research, innovative extension education in the Golden Plains Area, and commodity prices have influenced this swing toward sunflowers and other spring planted crops. seed is used to plant all sunflower acreage in Colorado at a cost of approximately $.5 million. Many commercial hybrids are available to our producers. help our sunflower growers make better hybrid decisions, CSU personnel evaluate commercial sunflower hybrids at different locations in northeastern Colorado. These trials are the only source of unbiased hybrid performance information for Colorado sunflower growers. Participation by the seed companies in the state trials is voluntary. Commercial companies were given the opportunity to enter one or more hybrids at any location. Reference to commercial companies or hybrids is made with the understanding that no discrimination is intended and no endorsement is implied by Colorado State University. Colorado sunflower performance trials are planted annually at four dryland locations and one irrigated location. At each trial location there are separate trials for oil and for confection hybrids. In 998, the four dryland locations were Akron, Idalia, Julesburg, and Cheyenne Wells. The irrigated location was Bethune. The 998 data for the irrigated confection trial at Bethune is not included in this report due to low plant stands. A randomized complete block design with four replicates was used for all trials. The center two rows of four row plots (3" spacing between rows and 4' long) were harvested for grain yield. Oil hybrids were seeded at 9, seeds/acre under dryland conditions and at 24, seeds/acre under irrigation. Confection hybrids were seeded at 5, seeds/acre under dryland conditions and at 7, seeds/acre under irrigation. In addition to seed yields (reported in pounds per acre adjusted to % moisture content), test weight, moisture at harvest, plant height, lodging, plants per acre (density), oil content (for oil hybrids ), and seed size (for confection hybrids) are also reported. The least significant difference (LSD) value, alpha=.3, is reported for yield. Oil content was determined by Triumph Seed Co., Inc. using NMR analysis from bulked samples. Oil content is expressed on a % moisture basis. The 998 Sunflower Season Both sunflower head moth and banded head moth numbers were almost nonexistent this year compared to record levels in 997. Sunflower seed weevil numbers also were lower in 998, resulting in reduced control activities. Entomologists credit winter weather for reducing insect number during the 998 growing season. Traditional hot spots for spotted sunflower stem weevil remained hot in 998. Red leaf rust showed up again in 998 but most oil types are showing continued resistance. New confection hybrids have incorporated rust resistance and only 5 acres of rust susceptible varieties were sprayed with Folicur on the eastern Colorado plains in 998. The growing season recorded warmer than normal temperatures and a later than normal killing frost. Above average precipitation at many locations allowed for above average dryland yields but oil contents were below average. Information regarding sunflower production practices and pest control can be obtained from the following source: High Plains Sunflower Production and IPM, Bulletin No. 556A, Colorado State University Cooperative Extension, Fort Collins, 8523.
Table. Cultural conditions for hybrid sunflowers testing in 998 Akron Bethune Cheyenne Wells Idalia Julesburg Soil Type Previous Crop Fertilization N acre- P2O5 acre- Zn acre- Kieth-Kuma Loam Corn Kieth Silt Loam Wheat 3.5 Herbicide Roundup Sonalan Eptam Santana Loam Wheat 6 Kuma-Kieth Silt Loam Wheat Rago Loam Wheat 6 Sonalan Roundup Treflan Insecticide None None Asona Parathon Irrigation None Furrow None None None None Table 2. Dryland sunflower oil performance at Akron in 998 Height Density Oil lb/ac bu/ac in plants/ac % Interstate IS 449 424 26.8 47 664 36.9 Triumph 642 256 26.4 47 6596 36.8 DEKALB DK3875 53 25.5 45 545 35.7 Pioneer brand 6338 34 26. 5 6244 35.3 Pioneer brand XF474 72 25.3 46 322 37.4 DEKALB DK388 27 26.2 47 565 33. Cargill X67 2 25.2 44 4935 34.3 Cargill X32 999 25. 45 642 33.7 Cargill X3272 997 26. 44 5487 35.7 DEKALB DK39 989 26.7 4 4965 37.7 DEKALB DK386 974 26.6 48 4989 35.2 DEKALB DK3868 974 25.7 4 534 36.3 Pioneer brand XF379 952 26.8 52 6768 36.4 Triumph 562 948 25.9 53 569 35.2 Cargill SF87 943 25.9 4 749 34. Pioneer brand 645 932 26.7 49 2889 37.3 Cargill SF27 96 25. 45 7243 35. Pioneer brand XF4728 898 26. 5 4733 37.8 Interstate IS 6767 895 26.5 47 4933 37.9 Pioneer brand 64A6 845 26. 55 5546 38. Interstate IS 677 82 25.4 49 4762 33.6 Interstate HYSUN 449 85 24.5 5 6 34. Pioneer brand 63A5 35.4 82 25.8 46 4382 (HO) Cargill SF29NL 796 25.3 42 537 35.4 DEKALB DK379 67 25.2 45 52 36.7 Average 968 25.9 47 5228 36. CV% 28. LSD (.3) 23.9 Trial conducted on the Central Great Plains Research Center; seeded 6/2 and harvested /4. Table 3. Average dryland sunflower oil performance at Akron, 997-98 lb/ac bu/ac Cargill SF87 479 24. Pioneer brand 6338 44 26. DEKALB DK3875 35 24.2 Cargill X67 35 25.2 Pioneer brand 63A5 (HO) 36 25. Pioneer brand 645 293 25.2 Interstate IS 6767 282 25.9 DEKALB DK3868 282 25.6 DEKALB DK388 235 25. Interstate IS 677 232 25. DEKALB DK379 224 25.5 DEKALB DK39 222 25.4 Triumph 562 28 24.3 Cargill SF29NL 39 25.2 Cargill SF27 3 25. Average 28 25. 2
Table 4. Irrigated sunflower oil performance at Bethune in 998 Height Density Lodging Oil lb/ac bu/ac in plants/ac % % DEKALB DK388 2792 3. 55 3283 6 37.6 Pioneer brand 63 263 28.5 59 4397 3 39. DEKALB DK39 262 26.8 56 46 5 35.7 Interstate IS 449 259 29. 6 466 8 39. Pioneer brand 6338 258 29.6 62 4875 3 37.2 Cargill X3272 249 28.4 52 2578 2 37.2 DEKALB DK3875 2424 28.8 53 262 3 37.6 Cargill X67 2395 29. 5 3373 37.5 Cargill SF29NL 233 29.3 53 4648 37.6 Mycogen 8468 237 28.8 55 277 7 35.2 Kaystar 95 233 28.4 62 4533 35.2 Triumph 573 236 28.9 6 3895 9 38.2 Pioneer brand XF474 226 29. 54 6383 5 39.4 Mycogen 8488NS 297 29.2 62 4494 8 35.3 NK brand T45-L2 288 29.3 6 3666 9 36.3 Triumph 562 277 3.4 68 375 5 37.8 Pioneer brand 645 27 28. 58 4842 38.6 Pioneer brand 64A6 255 27.7 63 58 5 38.4 Pioneer brand XF4728 252 29.6 55 3377 4 37.7 Cargill SF87 222 27.7 5 5476 4 36.7 Mycogen 8372 29 29.4 55 686 36.4 NK brand 278 259 27.6 58 4249 6 38.5 NK brand 23 235 28.9 49 5287 2 37.5 Pioneer brand XF379 26 28. 66 4974 3 37.6 Triumph 545 2 29.5 62 593 4 37. DEKALB DK386 983 29.2 55 3777 37.3 Mycogen 756 98 27.6 58 4874 2 36.6 DEKALB DK379 953 3.5 56 359 4 4.9 Pioneer brand 63A5 (HO) 872 29.7 56 565 6 36.4 Interstate IS 6767 82 29.3 59 329 2 39.4 DEKALB DK3868 77 28.9 5 2763 24 38.7 Cargill X32 762 29.5 5 5262 3 36.4 Interstate HYSUN 449 685 27.5 56 3995 35.2 Cargill SF27 599 28.7 48 3773 5 36.6 Average 267 28.9 57 488 7 37.4 CV% 2.8 LSD (.3) 43.6 Trial conducted on the George Stahlecker farm; seeded 5/2 and harvested /2. Table 5. Average irrigated sunflower oil performance at Bethune, 997-98 lb/ac bu/ac DEKALB DK388 2649 3. Kaystar 95 2624 29.8 DEKALB DK39 262 28.5 Pioneer brand 6338 267 29.7 Triumph 562 25 3.7 DEKALB DK3875 258 29. Pioneer brand 645 2492 28.8 Triumph 573 2446 29.5 Cargill SF29NL 2388 29.7 NK brand T45-L2 2364 3. NK brand 278 2327 28.8 Cargill SF87 232 28. Triumph 545 2282 29.7 NK brand 23 2254 29. Cargill X67 223 28.7 Pioneer brand 63A5 (HO) 24 29.5 Interstate IS 6767 29 29.7 DEKALB DK379 283 3. DEKALB DK3868 938 29.4 Cargill SF27 859 29.2 Average 2338 29.4 3
Table 6. Dryland sunflower oil performance at Cheyenne Wells in 998 Height Density Lodging Oil lb/ac bu/ac in plants/ac % % DEKALB DK379 58 25.8 47 437 34.7 Kaystar 95 536 25.8 5 2587 3.7 Triumph 562 533 23.3 53 232 33. NK brand 278 526 24.3 48 4792 3 33.7 Interstate HYSUN 449 5 23. 49 2584 2 35.4 Pioneer brand XF379 52 24. 57 445 2 32.8 DEKALB DK386 493 25.4 49 2793 33.6 DEKALB DK388 49 24.4 48 432 33.5 Cargill SF27 489 25. 48 4974 33.4 Interstate IS 6767 476 25. 47 2829 4 29.4 Pioneer brand 63 439 24.8 5 4573 34.7 NK brand T45-L2 43 25.9 54 3266 6 33.5 Pioneer brand 6338 376 26. 53 663 2 34.5 Cargill SF29NL 363 24.6 47 5685 33.4 Pioneer brand XF474 354 23.8 49 45 32.7 NK brand 23 348 24.4 48 565 2 3.3 DEKALB DK39 347 25.7 45 4298 3 34. Triumph 573 326 24.8 53 4728 3.4 DEKALB DK3875 285 25. 43 477 3 3.9 Cargill X67 239 24.3 4 533 33. Pioneer brand 64A6 72 24.9 58 292 33.6 Interstate IS 449 49 25.2 5 4526 2 33.5 Cargill X32 47 24.8 47 3886 3 3. Cargill SF87 26 24.5 46 3775 3.6 Pioneer brand XF4728 97 24.9 47 355 5 33. Pioneer brand 63A5 (HO) 9 24.7 48 4576 34. Pioneer brand 645 8 24.4 5 3759 3 34. Interstate IS 677 77 24.4 5 3862 3 32.4 Cargill X3272 43 25.2 48 472 2 33.8 DEKALB DK3868 5 24.7 43 3347 3 33.8 Average 32 24.8 49 3948 2 33. CV% 2.2 LSD (.3) 238.8 Trial conducted on the Dennis Campbell farm; seeded 6/24 and harvested /3. 4
Table 7. Dryland sunflower oil performance at Idalia in 998 Height Density Lodging Oil lb/ac bu/ac in plants/ac % % Triumph 562 2297 24.5 66 3362 36. Interstate IS 449 2232 26.5 65 58 36.6 Pioneer brand 6338 237 24.5 62 495 35.9 DEKALB DK3868 23 25.9 55 4687 38.2 Cargill SF87 2 24.5 56 4596 34.5 DEKALB DK39 295 26.8 58 4327 36.9 Cargill X32 23 26.5 59 3697 35.9 Pioneer brand XF379 25 23.7 68 5622 2 33.4 NK brand 23 28 25. 62 427 33.9 NK brand T45-L2 972 25. 67 576 36. DEKALB DK388 95 24.3 62 546 38.3 Kaystar 95 93 25.3 69 3534 36.3 Interstate IS 6767 922 24.9 62 369 35.5 Pioneer brand XF474 97 25.6 6 5487 34. Pioneer brand 63A5 (HO) 93 26.4 66 5688 37.2 Cargill SF27 883 25.7 55 55 35.5 Mycogen 8468 877 23.5 62 523 36. Interstate IS 677 845 24.7 64 4528 2 37.9 NK brand 278 832 24.2 65 5347 32.7 DEKALB DK3875 83 25.3 58 4336 3 34.6 Interstate HYSUN 449 79 24.8 59 878 7 34.4 Cargill X3272 77 25.4 6 433 34.5 DEKALB DK379 767 24. 59 455 37.7 Mycogen 8372 764 25.3 65 4793 36.3 DEKALB DK386 76 25.5 6 532 39.2 Pioneer brand XF4728 728 24.7 6 4567 38.5 Triumph 642 722 25.4 62 486 3 33.4 Cargill X67 72 23.7 56 5562 38.6 Mycogen 8488NS 664 26. 67 5897 2 33. Pioneer brand 645 535 25.9 62 4283 36.2 Cargill SF29NL 483 23.3 62 5538 2 35.3 Pioneer brand 64A6 445 24.6 68 628 35.4 Mycogen 756 363 24. 66 4664 33.9 Average 862 25. 62 472 35.8 CV% 3.2 LSD (.3) 29.4 Trial conducted on the Jim Roberts farm; seeded 6/2 and harvested /26. Table 8. Average dryland sunflower oil performance at Idalia, 997-98 lb/ac bu/ac Triumph 562 247 26.9 Pioneer brand 6338 223 26.7 Kaystar 95 224 26.7 DEKALB DK39 248 28. Pioneer brand 645 99 27.2 Cargill SF87 83 26.9 NK brand T45-L2 759 26.3 DEKALB DK3875 693 26.7 NK brand 278 685 25.6 NK brand 23 66 26. Pioneer brand 63A5 (HO) 628 26.4 Interstate IS 677 57 25.3 DEKALB DK388 566 25.6 Interstate IS 6767 554 25.9 Cargill SF29NL 524 24.7 Cargill SF27 5 27.2 DEKALB DK3868 5 26.6 Cargill X67 475 24.9 DEKALB DK379 359 25.8 Average 747 26.3 5
Table 9. Dryland sunflower oil performance at Julesburg in 998 Height Density Lodging Oil lb/ac bu/ac in plants/ac % % Interstate HYSUN 449 685 22.8 49 3665 5 35.6 Cargill X32 62 22.6 54 526 37. Pioneer brand XF474 593 22. 56 6426 37.6 Pioneer brand 6338 555 22. 57 622 34.7 Interstate IS 6767 5 22.4 56 5564 34.7 DEKALB DK379 487 22. 47 538 35. DEKALB DK39 487 22.5 46 4784 3 37.6 Pioneer brand XF379 465 2.9 57 7245 33.8 Pioneer brand 63A5 (HO) 447 22. 57 6967 36.7 Pioneer brand 645 422 22.3 55 527 3.6 Pioneer brand XF4728 45 2.9 57 4996 35.3 Cargill SF87 368 2. 49 5954 32.2 DEKALB DK3875 36 22.4 53 6872 33.4 DEKALB DK3868 345 2.2 43 648 35.5 Kaystar 95 334 22.2 6 537 34.6 Triumph 54 322 2.8 55 6432 34.9 Pioneer brand 64A6 3 2.8 6 6973 33.2 Interstate IS 449 298 22.2 55 6786 3 35. Interstate IS 677 28 2.9 56 65 35.3 Cargill SF27 268 2.2 52 5697 36.3 Cargill X3272 238 22.5 54 6695 34.8 Cargill X67 23 2.6 48 6846 35.3 DEKALB DK386 92 2.9 55 69 33.9 DEKALB DK388 76 2. 5 5753 35.5 Triumph 545 48 22.8 5 493 36.8 Triumph 562 9 2.9 6 5634 33.3 Cargill SF29NL 3 2. 5 646 32.8 Triumph 642 42 2.4 53 53 33.8 Average 349 2.8 53 5887 34.9 CV% 2.5 LSD (.3) 248. Trial conducted on the Richard Fryrear farm; seeded 6/5 and harvested /27. Table. Average dryland sunflower oil performance at Julesburg, 997-98 lb/ac bu/ac DEKALB DK39 685 22.5 DEKALB DK379 637 22. Triumph 54 626 2.2 Pioneer brand 645 68 22.3 Interstate IS 6767 66 22.2 Pioneer brand 6338 65 22. DEKALB DK3875 565 22.4 Kaystar 95 542 22.2 Cargill SF27 5 2.6 Interstate IS 677 462 2.3 Cargill SF87 452 22.2 Pioneer brand 63A5 (HO) 436 22.5 DEKALB DK3868 44 2.9 DEKALB DK388 383 2.9 Cargill X67 334 2.8 Cargill SF29NL 32 2.4 Triumph 562 34 2.8 Average 55 22. 6
Table. Dryland sunflower confection performance at Akron in 998 Height Density lb/ac bu/ac in plants/ac Red River RRC 22 68 7.9 56 3366 Red River RRC 353 54 9.5 54 268 Red River RRC 949 4 9.9 54 297 Triumph 52C 975 8.8 58 233 Pioneer brand 6946 963 9.5 52 957 Seeds 2 Kodiak 949 8.4 54 3368 Pioneer brand 63C7 939 8.8 48 62 Triumph 765C 932 7.7 57 3595 Royal 2373 94 8.8 57 2229 Red River RRC 233 887 8.8 5 3948 Triumph 76C 846 8.4 54 779 Royal 273 75 9. 5 286 Red River RRC EX243 746 8.7 53 387 Pioneer brand EXP DE-998 736 8.8 53 39 Red River RRC 223 734 8.2 55 877 Average 98 8.8 54 2274 CV% 2. LSD (.3) 64.7 Trial conducted on the Central Great Plains Research Center; seeded 6/2 and harvested /4. Table 2. Average dryland sunflower confection performance at Akron, 997-98 lb/ac Triumph 76C 2 Seeds 2 Kodiak 8 Red River RRC 22 6 Red River RRC 233 4 Triumph 765C 39 Red River RRC 353 995 Triumph 52C 945 Red River RRC 223 9 Average 27 Table 3. Seed size of dryland sunflower confection performance at Akron in 998 Above 2/64 2/64 8/64 8/64 6/64 6/64 4/64 Pioneer brand 63C7.6 33.6 3.4 4.6.8 Pioneer brand 6946 5.7 25.6 4.7 8. 8.9 Pioneer brand EXP DE-998.8 3.6 36.8 5.7 6. Red River RRC 22 9.6 28.3 36.5 7. 8.6 Red River RRC 223.7 25.4 3.2 9.9 2.8 Red River RRC 233 8.2 26.8 3.2 2.6 2.2 Red River RRC 353 4.3 32.8 3.6 5.4 6.9 Red River RRC 949 7.9 22.6 35.6 2.8 3. Red River RRC EX243 22.9 29.6 28..6 7.9 Royal 273 7.2 24. 29.4 9.3. Royal 2373 26.9 36. 23.6 8.7 4.8 Seeds 2 Kodiak 5.2 29.5 27.9 7.5 9.9 Triumph 52C 2. 3.5 3.4 6.9 8. Triumph 76C 9.5 33. 28.3 2.4 6.7 Triumph 765C 8.4 26.4 33.9 8.6 2.7 7
Table 4. Dryland sunflower confection performance at Cheyenne Wells in 998 Height Density Lodging lb/ac bu/ac in plants/ac % Triumph 76C 29 8.3 54 9495 2 Pioneer brand 63C7 55 9. 44 989 Triumph 52C 54 7.8 5 869 7 Triumph 765C 54 8.3 52 8993 Pioneer brand 6946 84 8.4 53 9799 Pioneer brand EXP DE-998 772 8.6 52 886 2 Average 43 8.4 5 9525 2 CV% 23.6 LSD (.3) 29.2 Trial conducted on the Dennis Campbell farm; seeded 6/24 and harvested /3. Table 5. Seed size of dryland sunflower confection performance at Cheyenne Wells in 998 Above 2/64 2/64 8/64 8/64 6/64 6/64 4/64 Pioneer brand 63C7 32.8 34.9 2.9 7.6 3.8 Pioneer brand 6946 6. 34.3 34. 2. 3.6 Pioneer brand EXP DE-998 9. 33.6 32. 2.2 3. Triumph 52C 29.6 34. 25. 8.6 2.7 Triumph 76C 29.7 38.4 2.5 7.6 3.8 Triumph 765C 35. 3.4 9.7 9.9 5. 8
Table 6. Dryland sunflower confection performance at Idalia in 998 Height Density Lodging lb/ac bu/ac in plants/ac % Triumph 76C 222 9.7 7 9273 4 Interstate IS EXP4997 227 2.2 64 322 Pioneer brand EXP DE-998 259 2. 63 753 Triumph 52C 97 9.2 67 26 5 Triumph 765C 869 9.9 67 99 4 Pioneer brand 63C7 835 9. 62 554 Seeds 2 Kodiak 776 9.6 66 529 5 Pioneer brand 6946 67 9. 64 58 Mycogen 949 384 2. 66 243 2 Average 873 9.7 66 885 3 CV% 6.2 LSD (.3) 265.3 Trial conducted on the Jim Roberts farm; seeded 6/2 and harvested /26. Table 7. Average dryland sunflower confection performance at Idalia, 997-98 lb/ac bu/ac Triumph 76C 563 8. Mycogen 949 35 8.9 Triumph 52C 336 8.2 Triumph 765C 32 8.3 Seeds 2 Kodiak 243 9. Average 36 8.5 Table 8. Seed size of dryland sunflower confection performance at Idalia in 998 Above 2/64 2/64 8/64 8/64 6/64 6/64 4/64 Interstate IS EXP4997 57.7 27.6.8 3..8 Mycogen 949 3.4 29.9 27.9 2.4 7.4 Pioneer brand 63C7 46. 3.6 3.9 6.6 2.9 Pioneer brand 6946 34.3 32.9 2.9 8.7 3.2 Pioneer brand EXP DE-998 46.4 4.5 9.6 2.7.8 Seeds 2 Kodiak 26.8 36. 24.5 9.9 2.8 Triumph 52C 37.2 4. 4.6 5.9 2.2 Triumph 76C 4. 35.7 6.4 5.6 2.3 Triumph 765C 35.3 38.6 7.7 5.7 2.7 9
Table 9. Dryland sunflower confection performance at Julesburg in 998 Height Density Lodging lb/ac bu/ac in plants/ac % Triumph 765C 46 6.7 6 3434 2 Interstate IS EXP4997 364 6.2 59 368 Red River RRC 233 342 7.8 6 437 Red River RRC 353 3 6.2 54 359 Red River RRC 223 37 6. 57 4992 2 Red River RRC EX243 274 7.4 58 296 Triumph 52C 25 6.7 6 3657 Triumph 76C 224 6.6 58 398 Pioneer brand 63C7 97 7. 54 49 Pioneer brand EXP DE-998 45 7. 58 399 Red River RRC 22 2 6. 6 4587 Red River RRC 949 65 6.3 6 4658 Pioneer brand 6946 3 7. 57 3959 Average 237 6.7 58 386 CV% 9.2 LSD (.3) 25.7 Trial conducted on the Richard Fryrear farm; seeded 6/5 and harvested /27. Table 2. Average dryland sunflower confection performance at Julesburg, 997-98 lb/ac bu/ac Red River RRC 233 354 7.4 Red River RRC 353 299 6.3 Red River RRC 22 234 6. Red River RRC 223 228 6. Average 289 6.4 Table 2. Seed size of dryland sunflower confection performance at Julesburg in 998 Above 2/64 2/64 8/64 8/64 6/64 6/64 4/64 Interstate IS EXP4997 43.6 26. 7.9 8.6 3.8 Pioneer brand 63C7 3. 28.2 25.5.7 5.6 Pioneer brand 6946 9. 3.3 26.5 7.6 6.5 Pioneer brand EXP DE-998 33.8 29.2 26. 7.2 3.8 Red River RRC 22 22.9 33.8 23.4.5 8.4 Red River RRC 223 43.3 24.9 6.5 9.8 5.5 Red River RRC 233 24.6 27. 2.6 4.4 3.3 Red River RRC 353 4. 27.8 2.4 7.8 4. Red River RRC 949 24.4 28.8 23.4 5.4 8. Red River RRC EX243 36.4 3.8 7.8. 5. Triumph 52C 32.4 27.8 26.4.4 3. Triumph 76C 38.5 25.4 2.2 9.8 5. Triumph 765C 46.4 33.6 3.6 5..4
Seed Company Entrants in the 998 Colorado Sunflower Performance Trials BRAND/HYBRID ENTRANT ADDRESS TELEPHONE Royal s Agway, Inc. PO Box 69, Grandin, ND 5838 (7) 484-533 Cargill Cargill Seeds 4 4 st Street NW, Fargo, ND 582 (7) 282-8787 DEKALB DEKALB Genetics Corp. 3 Sycamore Rd., DeKalb, IL 65 (85) 758-346 Interstate Interstate Payco Seed Co. 25 Prairie Pkwy, PO Box 338, West Fargo, ND 5878 (7) 282-3373 Kaystar Kaystar Seed 72 3 rd Street SW, PO Box 947, Huron, SD 5735 (65) 352-879 Mycogen Mycogen Seeds 34 Corporate Center Curve, St. Paul, MN 552-428 (8) 692-6436 Northrup King Novartis Seeds Box 959, Minneapolis, MN 5544 (62) 593-7333 Pioneer Pioneer Hi-Bred Int l., Inc. 2 Gateway Mall Suite-3, Lincoln, NE 6855-2449 (42) 467-5458 Pioneer Pioneer Hi-Bred Int l., Inc. 66 S. Kentucky, Suite C-5, Amarillo, TX 792 (86) 356-6 Red River Red River Commodities, Inc. 32 East College Drive, Colby, KS 677 (93) 462-39 SEEDS 2 SEEDS 2 Box, Breckenridge, MN 5652 (28) 643-24 SIGCO SIGCO Sun Products, Inc. 9 North 8 th St., PO Box 33, Breckenridge, MN 5652 (28) 643-8467 Triumph Triumph Seed Co., Inc. PO Box 5, Hwy 62 Bypass, Ralls, TX 79357 (86) 253-2584 Entry Forms for 999 Trials Entry forms for 999 trials may be obtained from the Department of Soil and Crop Sciences, Colorado State University, Cynthia Johnson, C-4 Science Building, Fort Collins, CO 8523-7; Telephone (97) 49-94; Fax (97) 49-2758; e-mail cjohnson@agsci.colostate.edu or web site Additional Copy Request Additional copies of this report may be ordered for $3/copy from the Department of Soil and Crop Sciences, Colorado State University, Cynthia Johnson, C-4 Science Building, Fort Collins, CO 8523-7; Telephone (97) 49-94; Fax (97) 49-2758; or e-mail cjohnson@agsci.colostate.edu. http://www.colostate.edu/depts/soilcrop/extension/cropvar/index.html
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