2026 New York and Pennsylvania Pest Management Guidelines for Grapes
Authors
Bryan Brown
Cornell IPM, Cornell AgriTech, Geneva, NY
Weed management
Jessica Clippinger
Penn State University, North East, PA
Disease management
Katie Gold
Penn State University, Integrated Pest and Crop Management, Geneva, NY
Disease management
Bryan E. Hed
Penn State University, North East, PA
Disease management
Michael Helms
Cornell IPM Pesticide Safety Education Program, Ithaca, NY
Pesticide information
Greg Loeb
Department of Entomology, Geneva, NY
Entomology
Megan Luke
Penn State Cooperative Extension Erie County, Erie, PA
Pesticide information, pest management
Flor E. Acevedo
Department of Entomology, Penn State University, North East, PA
Entomology
Lynn Sosnoskie
School of Integrative Plant Science, Horticulture Section, Geneva, NY
Weed management
Acknowledgments
Special appreciation is extended to the following for their contributions to this publication:
Terence R. Bates
Lake Erie Regional Grape Program, Portland, NY
David Combs
School of Integrative Plant Sciences, Plant Pathology and Plant-Microbe Biology Section, Geneva, NY
Amara Dunn
Biocontrol Specialist, Cornell IPM, Geneva, NY
Rick Dunst (retired)
Lake Erie Regional Grape Program, Portland, NY
David M. Gadoury
School of Integrative Plant Sciences, Plant Pathology and Plant-Microbe Biology Section, Geneva, NY
Heather Leach
Department of Entomology, University Park, PA
Andrew J. Landers (retired)
Department of Entomology, Geneva, NY
Timothy E. Martinson (retired)
Cornell Cooperative Extension, Geneva NY
Andrew J. Muza (retired)
Penn State Cooperative Extension – Erie County, Erie, PA
Bruce I. Reisch (retired)
School of Integrative Plant Sciences, Horticulture Section, Geneva, NY
Michael C. Saunders (retired)
Department of Entomology, University Park, PA
Andrew F. Senesac (retired)
Cornell Cooperative Extension – Suffolk County, Riverhead, NY
Jody Timer (retired)
Penn State University, North East, PA
Hans C. Walter-Peterson
Finger Lakes Regional Grape Program, Penn Yan, NY
Timothy H. Weigle (retired)
Cornell IPM, Portland, NY
Alice V. Wise
Cornell Cooperative Extension – Suffolk County, Riverhead, NY
Wayne F. Wilcox (retired)
School of Integrative Plant Sciences, Plant Pathology and Plant-Microbe Biology Section, Geneva, NY
Abbreviations and Symbols Used in This Publication
| Abbreviation | Meaning | Abbreviation | Meaning | Abbreviation | Meaning |
|---|---|---|---|---|---|
| A | acre | EC | emulsifiable concentrate | SP | soluble powder |
| AI | active ingredient | F | flowable | UDH | up to day of harvest |
| AS | aqueous suspension | G | granular | ULV | ultra-low volume |
| D | dust | L | liquid | W | wettable |
| DF | dry flowable | P | pellets | WDG | water-dispersible granule |
| DG | dispersible granule | PHI | pre-harvest interval | WP | wettable powder |
| DTH | days to harvest | SC | suspension concentrate | WSP | water soluble packet |
| E | emulsion, emulsifiable |
| Symbol | Meaning |
|---|---|
| * | Federal restricted use pesticide; may be purchased and used only by certified applicators |
| *NY | Restricted use pesticide in New York State |
| † | Not for use in Nassau and Suffolk Counties |
| ^ | Not registered for use in New York State at press time |
Every effort has been made to provide correct, complete, and up-to-date pest management information for New York State and Pennsylvania at the time this publication was released for printing (___ 2025). Changes in pesticide registrations, regulations, and guidelines occurring after publication are available in county cooperative extension offices or from the Cornell IPM Pesticide Safety Education Program (psep.cce.cornell.edu) or the Pennsylvania Department of Agriculture’s Bureau of Plant Industry (www.agriculture.state.pa.us).
Where trade names appear, no discrimination is intended, and no endorsement by Cornell Cooperative Extension or Penn State Cooperative Extension is implied.
These guidelines are not a substitute for pesticide labeling. Always read and understand the product label before using any pesticide.
The guidelines in this bulletin reflect the current (and past) authors’ best efforts to interpret a complex body of scientific research, and to translate this into practical management options. Following the guidance provided in this bulletin does not assure compliance with any applicable law, rule, regulation or standard, or the achievement of particular discharge levels from agricultural land.