Bunch Grape Integrated Management Guide
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2021 Southeast Regional Bunch Grape Integrated Management Guide Commodity Editor Mizuho Nita (Virginia Tech) Section Editors Pathology; Phil Brannen (University of Georgia), Sarah Villani (North Carolina State University), Zack Hansen (University of Tennessee), Rebecca Melanson (Mississippi State) and Mizuho Nita (Virginia Tech) Entomology; Hannah Burrack (North Carolina State University), Doug Pfeiffer (Virginia Tech), Brett Blaauw (University of Georgia), and Frank Hale (University of Tennessee) Weed Science; Wayne Mitchem (North Carolina State University) Vertebrate Management and Grape Culture; David Lockwood (University of Tennessee); Michael T. Mengak (University of Georgia), and Eric T. Stafne (Mississippi State University Pesticide Stewardship and Safety; Ash Sial (University of Georgia) Senior Editors Phil Brannen (University of Georgia) Bill Cline (North Carolina State University) A product of the Southern Region Small Fruit Consortium (www.smallfruits.org). Recommendations are based on information from the manufacturer’s label and performance data from research and extension field tests. Because environmental conditions and grower application methods vary widely, suggested use does not imply that performance of the pesticide will always conform to the safety and pest control standards indicated by experimental data. This publication is intended for use only as a guide. Specific rates and applications methods are on the pesticide label, and these are subject to change at any time. Always refer to and read the pesticide label before making any application! The pesticide label supersedes any information contained in this guide, and it is the legal document referenced for application standards. Contents 2021 Southeast Regional Bunch Grape Integrated Management Guide ............................................................................................................................ 1 PESTICIDE EMERGENCIES: 1-800-222-1222 ............................................................................................................................................................... 5 PESTICIDE SPILLS OR OTHER EMERGENCIES ..................................................................................................................................................... 7 PESTICIDE LIABILITY and STEWARDSHIP ............................................................................................................................................................ 8 PESTICIDE APPLICATION ......................................................................................................................................................................................... 9 RESISTANCE MANAGEMENT ................................................................................................................................................................................ 10 Bunch Grape Integrated Management Guide (Insect and Disease Management) ............................................................................................................ 12 Establishment ................................................................................................................................................................................................................ 12 General comments .................................................................................................................................................................................................... 12 Labeling used in the guide ........................................................................................................................................................................................ 15 Nematodes................................................................................................................................................................................................................. 16 Dormant ........................................................................................................................................................................................................................ 17 General comments .................................................................................................................................................................................................... 17 Diseases..................................................................................................................................................................................................................... 18 Bud swell (bud is visibly swollen but no green or pink tissue is observed) ................................................................................................................. 19 Insect pests ................................................................................................................................................................................................................ 19 Bud break and new shoot sprays (7-10 day interval from 1-inch shoot growth until pre-bloom) ................................................................................ 22 General comments .................................................................................................................................................................................................... 22 Diseases..................................................................................................................................................................................................................... 23 Insect pests ................................................................................................................................................................................................................ 23 Pre-bloom ...................................................................................................................................................................................................................... 25 General comments .................................................................................................................................................................................................... 25 Diseases..................................................................................................................................................................................................................... 28 Insect Pests ................................................................................................................................................................................................................ 33 Bloom (1 – 2 sprays) ..................................................................................................................................................................................................... 36 Diseases..................................................................................................................................................................................................................... 36 Post-bloom (7-10 days after the bloom spray) .............................................................................................................................................................. 40 General comments .................................................................................................................................................................................................... 40 Diseases..................................................................................................................................................................................................................... 42 Insect pests ................................................................................................................................................................................................................ 42 Fruit set ......................................................................................................................................................................................................................... 45 General comments .................................................................................................................................................................................................... 45 Diseases..................................................................................................................................................................................................................... 45 Early cover (7-10 days after the post-bloom spray) and Second cover (7-10 days after first cover) ........................................................................... 46 Diseases..................................................................................................................................................................................................................... 46 Insect pests ................................................................................................................................................................................................................ 47 Berry touch and bunch closure ....................................................................................................................................................................................