Turfgrass. Keys for Identification of Some Southern Turfgrass Diseases (prepared by G.E. Holcomb)

Similar documents
Christmas Trees and Conifers. Diseases of Christmas Trees and Conifers and Fungicides Labeled for Control

Fruit Crops Grapes. Diseases of Grapes and Fungicides Labeled for Control. Disease Fungicides a Efficacy b

Commercial Crop Production Small Fruit - Grapes

Fruit Crops Citrus. Diseases of Citrus and Fungicides Labeled for Control

Fruit Crops Stone Fruits (Peaches, Plums, Etc.)

Ornamental Horticulture Program Research Project Sheet

Waitea Patch: History, Identification and Control

Commercial Crop Production Small Fruit - Grapes

Commercial Crop Production Fruit and Nut Crops - Stone Fruits

Commercial Crop Production Fruit and Nut Crops - Stone Fruits

Seasonal Programs for Control of Turfgrass Diseases

Corn (Field) and Sorghum Seed Treatment

2017 Turfgrass Proceedings

Plant & Pest Advisory

1997 RUTGERS Turfgrass Proceedings

Management of Gummy Stem Blight (Black Rot) on Cucurbits in Florida 1

Lecture 05 - Diseases of Pomegranate and Papaya

Vinews Viticulture Information News, Week of 17 August 2015 Columbia, MO

Christopher Gee, Ph.D. Field Development Rep II/Technical Service Rep - Fungicides Concord, OH 44077

Sunflower seeds V2.0-07/12/2007

Management of Pepper and Tomato Diseases

Grape disease control Update for 2015

Diseases of Vegetables

Melanie L. Lewis Ivey and Rachel Medina Fruit Pathology Program Department of Plant Pathology The Ohio State University-Wooster Campus Wooster, OH

Field Crops Soybeans. Disease. Seedling Disease (Rhizoctonia solani, Phytophthora, Pythium, etc.)

2006 Florida Plant Disease Management Guide: Strawberry 1

14.7 Black swallowtail; mature larva with scent glands extended.

Problems affecting seeds and seedlings

Cercospora Leaf Spot Biology &Management. Oliver T. Neher

Ten Vegetable Diseases You Can Learn to Hate (or Love)

Eastern Filbert blight- Anisogramma anomala

Phytophthora blight of cucurbits

SOYBEAN DISEASE AND NEMATODE CONTROL. (Bob Kemerait)

Late-season disease control options to manage diseases, but minimize fermentation problems and wine defects

Management of Resistance to Fungicides used for Botrytis Control in Berries

Horticulture 2011 Newsletter No. 15 April 12, 2011

2016 Tree Fruit Management Guide Updates (As of March 15, 2016)

Residue Decline Curves for Blueberries and Raspberries or How To Meet MRLs in Export Markets

2016 Tree Fruit Management Guide Updates (as of March 15, 2016) to the 2015 New England Tree Fruit Management Guide

Managing Stone Fruit Diseases and Updates on the Spray Guides. Mohammad Babadoost University of Illinois 3-4 February 2015

Understanding and Managing Walnut Botryosphaeria/Phomopsis Canker and Blights (Influence of El Niño on the Sleeping Giant)

Angular leaf spot, powdery mildew, gummy stem blight, viruses, and downy mildew: Notes for 2018

GREENHOUSE GAS ASSESSMENT OF WINE PRODUCED IN PORTUGAL

Fungicide Resistance. Management in Apple and Pear Pathogens. Introduction. Resistance terminology

Botryosphaeria, Phomopsis and Anthracnose Management in Walnuts

ROMEO An efficient and competitive solution against crop diseases.

BEANS FOR THE TENNESSEE VEGETABLE GARDEN

Angel Rebollar-Alvitar and Michael A. Ellis The Ohio State University/OARDC Department of Plant Pathology 1680 Madison Avenue Wooster, OH 44691

Major seed-borne diseases in Indonesia. A.S. Duriat & J.M. van der Wolf

MANAGEMENT OF SOYBEAN RUST IN ALABAMA

Merivon Xemium Brand Fungicide

TECHNOLOGY SUPPORTING PLANT POLLINATION. Enhanced pollination More fruit sets, pods & seeds. PollenShield

Fungicide sensitivity of Botrytis cinerea causing gray mold of berries in WA

Plant Disease and Insect Advisory

IR-4 Ornamental Horticulture Program Research Report Cover Sheet

Table 3 Specialty Vegetable Disease Control

Disease updates on Botryosphaeria (Bot)/Phomopsis, Anthracnose & Walnut Blight

Summer Pecan Scab Defense. Monte L. Nesbitt. Texas A&M AgriLife Extension. Pecan South, June 2015

Vineyard IPM Scouting Report for week of 18 August 2014 UW-Extension Door County and Peninsular Agricultural Research Station

Stone Fruit Protection Solutions

Ohio Grape-Wine Electronic Newsletter

Growing Healthy Christmas Trees

Fungicides for phoma control in winter oilseed rape

GRAPE POWDERY MILDEW: MANAGEMENT AND RESISTANCE

AGRABLAST and AGRABURST TREATMENT OF COFFEE FUNGUS AND BLACK SIGATOKA ON BANANAS

Ohio Grape-Wine Electronic Newsletter

Melanie L. Lewis Ivey and Rachel Medina Fruit Pathology Program Department of Plant Pathology The Ohio State University-Wooster Campus Wooster, OH

Commercial Crop Production Fruit and Nut Crops - Citrus

Commercial Crop Production Field Crops - Soybeans

WE VE GOT YOU COVERED BETTER DISEASE CONTROL STARTS WITH A BETTER COPPER FORMULATION NOW REGISTERED FOR THE CONTROL OF PSA IN KIWIFRUIT

Commercial Crop Production Fruit and Nut Crops - Citrus

Vineyard IPM Scouting Report for week of 12 July 2010 UW-Extension Door County and Peninsular Agricultural Research Station Sturgeon Bay, WI

MAJOR USES OF PESTICIDES

Melanie L. Lewis Ivey and Rachel Medina Fruit Pathology Program Department of Plant Pathology The Ohio State University-Wooster Campus Wooster, OH

Horticulture 2012 Newsletter No. 16 April 24, 2012

Managing Stone Fruit Diseases. Mohammad Babadoost University of Illinois Tree Fruit Schools 2,3 February 2016

Cedar-quince rust on juniper- Gymnosporangium clavipes

Guide to Fruit Production

Major Greenhouse Crops in USA. Greenhouse Tomato Production. Diseases of Production

Alan Schreiber Agriculture Development Group, Inc. Tom Walters Walters Ag Research

Peanut disease photos

World Journal of Pharmaceutical Research SJIF Impact Factor 6.805

Stone Fruit Protection Solutions

LEGUMINOUS COLE CROPS CROPS BULBOUS MALVACEAE VEGETABLE CROPS CUCURBITS LEAFY ROOTS SOLANACEOUS TUBERS

Survey of grape powdery and downy mildew sensitivity to commonly used fungicides,

Scab Fusicladosporium carpophilum. Seasonal Scab Pressure. Items for Discussion. Petal fall, a critical stage of scab development (Dr. E.

Uncertainty of measurement for Trace analysis

Some common problems in vineyards

Kentucky Fruit Facts. Fruit Crop News John Strang, U.K. Extension Horticulturist and Matt Dixon, U.K. Ag Meteorologist

Trends in diagnoses of soybean foliar disease for 2015 Karen Lackermann, DuPont Pioneer

Commercial Crop Production Fruit and Nut Crops - Citrus

Pomegranate Diseases: What do we know and where are we heading? Achala KC and Gary Vallad FPA Grower s Meeting Wimauma, FL 03/04/2016

Berry Group Protection Solutions

Legume ipmpipe Diagnostic Pocket Series Angular Leaf Spot Phaeoisariopsis griseola

EVALUATION OF FUNGICIDES FOR CONTROL OF ALTERNARIA BROWN SPOT AND

MAIZE DISEASES AND NUTRIENT DEFICIENCIES A FARMER S GUIDE

MAIZE DISEASES. Presented by Dr. S. Parthasarathy, Assistant Professor Department of Plant Pathology

IR-4 Food Use Workshop

4. Pesticides Used on Vegetable Crops in Ontario

Fungicides for phoma control in winter oilseed rape

Transcription:

Keys for Identification of Some Southern Turfgrass Diseases (prepared by G.E. Holcomb) I. Grass affected in distinct patches; yellow to brown in color. A. Patches about inches in diameter; leaf lesions present.. Dollar Spot B. Patches greater than inches in diameter; no leaf lesions present. 1. Ring or arc of lush growth or dead grass; mushrooms present or not.. Fairy Ring 2. No ring or arc of lush growth present; no mushrooms present. II. Grass not affected in patches. a. Grass often affected in streaks, with leaves matted; primarily on ryegrass overseeded on golf courses and Bermuda grass greens.... Pythium Blight b. Patches more or less circular, may enlarge to several feet; leaves rotted at the base, can be pulled easily from the leaf sheath... Brown (Large) Patch c. Affected areas irregular in shape, 8 24 inches in diameter (or larger) with a mixture of yellow and dead grass; roots are sparse, short and black; stolons may be rotted... Take all Root Rot A. Chlorotic spots and orange powder (spores that can be rubbed off) on leaves.... Rust B. Leaf spots present, but no orange powder present. 1. Leaf spots varying in size; occurring primarily on Bermuda grass and ryegrass.... Melting Out or Leaf Spot 2. Leaf spots oval to irregular in shape with brown borders and tan to gray centers; primarily on St. Augustine grass..... Gray Leaf Spot. Leaf spots reddish brown to brown surrounded by a yellow halo; primarily on centipede grass........ Anthracnose C. No leaf spots present. 1. Grass covered with an easily removed slimy or crusty growth... Slime Mold (not a disease) 2. Mottle, chlorosis or mosaic on leaves; on St. Augustine grass or centipede grass..... St. Augustine Decline or Centipede Mosaic (virus diseases caused by Panicum Mosaic Virus)

Fungicide Uses on Commercial Turfgrasses Fungicide Common Name a Brown patch Large patch Dollar spot Gray leaf spot Leaf spots / melting out Takeall root rot b Fariy ring Pythium blight azoxystrobin boscalid captan cyazofamid ethazole (etridiazole) fenarimol fludioxonil fluoxastrobin flutolanil fosetyl Al iprodione mancozeb mefenoxam metconazole myclobutanil polyoxin D c phosphites (various salts) propamocarb propiconazole pyraclostrobin c quintozene (PCNB) tebuconazole thiophanate methyl thiram triadimefon c trifloxystrobin triticonazole vinclozolin Algae

a Active ingredient. b Also, Ggg root decline, Bermuda decline and spring dead spot. c For disease suppression only.

Relative Efficacy of Various Fungicides Against Diseases of Turfgrass a Fungicide Common Name b Brown patch Large patch Dollar spot Gray leaf spot Leaf spots / melting out Takeall root rot c,d Fariy ring azoxystrobin 4 4 () 2 boscalid 4 Pythium blight 2 2 copper hydroxide mancozeb cyazofamid fenarimol 2 (2) fludioxonil fluopicolide propamocarb fluoxastrobin 2 flutolanil 4 fosetyl al 2 iprodione 2 4 mancozeb 1 2 2 mefenoxam 2 metconazole 4 2 myclobutanil 2 2 4 1 polyoxin D 1 1 2 phosphites (various salts) 2 propamocarb 2 propiconazole 2 4 2 2 (2) pyraclostrobin 4 2 4 () 2 quintozene (PCNB) 2 4 2 tebuconazole 4 thiophanate methyl 2 4 4 2 triadimefon 2 4 4 2 (2) trifloxystrobin 4 2 triticonazole 4 2 vinclozolin 1.5 4.5 Algae 4

a Efficacy ratings are on a scale from 1 (inconsistent but performs well in some instances) to 4 (consistently good to excellent results) and are based on trials using commercial formulations of the fungicides, not the formulations readily available to homeowners. Ratings were compiled by Dr. Paul Vincelli and Dr. David Williams at the University of Kentucky from published reports over a period. Source: PPA 1 Chemical Control of Turfgrass Diseases 2011; http://pest.ca.uky.edu/psep/manuals/ppa1.pdf b Active ingredient. c Also, Ggg root decline, Bermuda decline and spring dead spot. d Ratings within parentheses are for take all patch caused by Gaeumannomyces graminis var. avenae.

Fungicides for Use on Commercial Turfgrass Common Name Trade Name (example) Formulation(s) Rate(s) (per1,000 square feet) Comments FRAC Code azoxystrobin Heritage Heritage G Heritage TL 50% WG 0.1% G 8.8% L 0.2 0.4 2 4 pounds 1 2 fluid 14 to 28 day interval; no more than.7 or 18.5 fluid per 1,000 square feet per 11 boscalid Emerald 70% WG 0.1 0.18 For golf course use only. 14 to 28 day interval; no more than 1.1 per 1,000 square feet per 7 captan Captan 50% WP 80% WDG 0.125 0.2 pounds 0.125 pounds For use on golf courses and sod farms only. 7 to 14 day interval M4 Chlorostar, Chlorothalonil, Countdown, Daconil, Echo, Ensign, Equus, Initiate, Mainsail, Manicure 8.5% F 54% F 82.5 WDG 1.5 8. fluid 1 5.5 fluid 1 5 M5 cyazofamid Segway 4.5% F 0.45 0.9 fluid No more than three applications or 2.7 fluid per 1,000 square feet per 21 etridiazole (ethazole) Terrazole 5% WP 2 4 For use on golf course tees and greens only. 10 to 14 day interval; no more than 10 per 1,000 square feet per 14 fenarimol Rubigan 11.6% L 0.75 8 fluid No more than 2 fluid per 1,000 square feet per fludioxonil Medallion 50% WP 0.25 0.5 No more than 1.5 per 1,000 square feet per 12 fluopicolide Stellar 5.7 pounds SC 1.2 fluid Pre mixed with propamocarb for control of Pythium. No more than two applications or 2.4 fluid per 1,000 square feet per. 4

Common Name Trade Name (example) Formulation(s) Rate(s) (per1,000 square feet) Comments FRAC Code fluoxastrobin Disarm 480 SC 0.25% G 0.09 0.6 fluid 1.2 4.6 pounds (see labels) 14 to 28 day interval; no more than 0.4 fluid per 1,000 square feet per 11 flutolanil Prostar 70% WP 1.5 4.5 No more than 4.5 per 1,000 square feet per 7 fosetyl Al Chipco Signature Prodigy Signature 80% WDG 4 8 lawns! 14 to 21 day interval iprodione 26GT Chipco 26019 Iprodione Pro 2.% F 50% WP 8 fluid 1.5 4 Not for use on residential lawns! no more than 5 fluid or 17.6 per 1,000 square feet per 2 mancozeb Dithane, Fore, Manzate, Penncozeb, Pentathlon, Protect 7% F 75% DF 80% WP 6.4 12.8 fluid 4 8 4 8 See label M mefenoxam Fenox Mefenoxam Subdue Ultra Flourish 1% G 21.% L 22.5% F 25.1% 45% WP 12.5 25 0.5 1 fluid 0.2 1 fluid 0.5 1 fluid 0.28 0.56 No more than three applications of mefenoxam per season 4 metconazole Tourney 50% WDG 0.18 0.44 Do not use on Bermuda grass! No more than 4 pounds per acre per myclobutanil Eagle Hoist 20EW 40% WP 1 2.4 fluid 0.6 1.2 No more than 1.8 fluid or 7.2 per 1,000 square feet per phosphite (salts of phosphorous acid) Alude, Exel, Fosphite, Fungi phite, Helena Prophyt, Primera Magellan, Vital Phosphorous acid equivalent (lb/gal).5.9 4.2 4.2 5 10 fluid 2 fluid 4 6 fluid 4.1 8.2 fluid Helena Prophyt for sod farms only; see label

Common Name Trade Name (example) Formulation(s) Rate(s) (per1,000 square feet) Comments FRAC Code polyoxin D zinc salt Endorse 2.5% WP see label 19 propamocarb hydrochloride Banol 66.5% L 1. 4 fluid No more than 12.5 fluid per 1,000 square feet per 28 propiconazole Banner, Dorado, Fathom, Headway, Honor Guard, Propensity, Propiconazole, Savvi, Spectator 14.% L 41.8% L 0.5 4 fluid 0.18 1.44 fluid No more than 16 or 5.8 fluid per 1,000 square feet per pyraclostrobin Insignia 20% WG 0.5 0.9 No more than 5.5 per 1,000 square feet per 11 quintozene (PCNB) Glacier, Parflo, PCNB, Revere, Terraclor, Turfcide 10% G 8.% F 75% WP 5 7.5 pounds 11 24 fluid 7 16 See label 14 tebuconazole Torque 8.7% L 0.6 fluid For use on golf courses only! Bermuda grass may be sensitive. No more than six applications or.6 fluid per 1,000 square feet per. thiophanatemethyl 6, Allban, Cavalier, Quali Pro TM, T Methyl, Transom, T Storm 2% G 41.25% L 46.2% F 50% WP 1.5 9 pounds 2 6 fluid 1 5 fluid 2 6 See label 1 thiram Defiant, Spotrete, Thiram 42.1% L 75% WDG.75 7.5 fluid 2.5 5 See label M triadimefon Bayleton 50% WP 0.25 2 See label trifloxystrobin Compass 50% WDG 0.1 0.25 No more than two to three sequential applications 11 triticonazole Trinity, Triton 19.2% L 0.5 2 fluid No more than 6 fluid per 1,000 square feet per vinclozolin Curalan 50 EG 1 Not for use on residential 2

Common Name Trade Name (example) Formulation(s) Rate(s) (per1,000 square feet) Comments FRAC Code Touché lawns! 10 to 21 day interval; maximum of per 1,000 square feet per. Combination Products azoxystrobin propiconazole Headway Headway G 5.7% 9.5% L 0.1% 0.75% G 0.75.0 fluid 2 4 pounds (see labels) See labels. 11 azoxystrobin Renown % 45% L 2.5 4.5 fluid. 11 M5 propiconazole fludioxonil Instrata 29.9% 4.7% 1.2% L 2.75 11 fluid M5 12 thiophanatemethyl Consyst Spectro 90 Peregrine Quali Pro TM/C 50% 16.7% WDG 72% 18% WDG 2 5 5.76 M5 1 fluopicolide propamocarb hydrochloride Stellar 5.54% 55.4% SC 1.2 fluid For use on golf courses and sod farms only 4 28 fluoxastrobin Disarm C 2.44% 8.4% L 1.5 5.9 fluid 11 M5 fluoxastrobin Disarm M 15.8% 25.6% L 0.25 1.0 fluid See label. 11

Common Name Trade Name (example) Formulation(s) Rate(s) (per1,000 square feet) Comments FRAC Code myclobutanil iprodione thiophanatemethyl 26/6 TM IP 19.65% 19.65% L 1 4 fluid Not for use on residential lawns or commercial sod! No more than 14.5 fluid per 1,000 square feet per ; no more than six applications per 2 1 mancozeb copper hydroxide Junction 15% 46.1% DF 2 4 Do not apply in spray solution with ph less than 6.5 M M1 propiconazole Concert 2.9% 8.5% L 1.5 8.5 fluid (see label) with apartments, dayc are M5 pyraclostrobin boscalid Honor 16.8% 11.2% WG 0.55 1.1. For use on golf courses only! 11 7 thiophanatemethyl flutolanil SysStar 28.6% 51.4% WDG 2 See label. 1 7 trifloxystrobin triadimefon Armada Tartan 25% L 50% WP 1 2 fluid 0.6 1.2 No more than two to three sequential applications 11 triticonazole Reserve 5% 40% L.2 5.4 fluid M5