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Resources on the proper use of chemical management options.

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Weed science labs and programs at Cornell

Weed science news

2nd edition of Weeds of the Northeast available for pre-order

This fully updated second edition of the best-selling Weeds of the Northeast provides lavish illustrations for ready identification of more than 500 common and economically important weeds in the Northeast and in the Upper Midwest and Mid-Atlantic states. 

This new edition covers the region south to North Carolina, north to Maine and southern Canada, and west to Wisconsin. This practical guide includes descriptions and photos of floral and vegetative characteristics, giving anyone who works with plants the ability to identify weeds before they flower.

Weed science news

Undergrads win Northeastern Weed Science Society contest

The Cornell undergraduate weed science team finished in first place at the Northeastern Collegiate Weed Science Contest. Agricultural Sciences major Megan Wittmeyer finished in first place in the individual undergraduate student category. Other team members include Elizabeth Fitzgerald (Biol Sci), Michael Lovier (Vit Enol), and Rebecca Stup (Plant Sci).

Weed science news

Get off my awn: Cornell Weed Team to compete in Ontario

While varsity sports take a summer respite, the Cornell Weed Team is preparing for the Northeastern Weed Science Society’s Collegiate Weed Science Contest – an international competition among the finest agricultural students in the region – on July 27 in Plattsville, Ontario. To the seven graduate and four undergraduate students on the Cornell team, who face endless marijuana wisecracks about weed from nonscientists, the tournament is no joke.

Weed science news

Timing is everything for weed management

Farmers can tailor their efforts to control weeds more effectively by pinpointing when a particular weed will emerge, according to a new Cornell study.

Researchers in the College of Agriculture and Life Sciences reviewed past studies on the peak timing of emergence for 15 troublesome weed species in the Northeast, as well as potential ways to use this knowledge, in their study, “Improving Weed Management Based on the Timing of Emergence Peaks: A Case Study of Problematic Weeds in Northeast USA,” published June 21 in the journal Frontiers in Agronomy.

Weed science news

New book helps farmers outsmart their weeds

Cornell and USDA scientists have produced the definitive guide to understanding agricultural weeds and how to manage them efficiently, effectively and ecologically. The 416-page book, “Manage Weeds on Your Farm: A Guide to Ecological Strategies,” was published by the USDA’s Sustainable Agriculture Research and Education (SARE) Program.

“It’s an amazing resource, exactly the kind of publication growers are looking for,” said Chris Smart, director of the School of Integrative Plant Science (SIPS) in Cornell’s College of Agriculture and Life Sciences. “It is both thorough and user-friendly. And who isn’t looking for better strategies to control weeds on their farm?”

Weed science news

Projects aim to manage weeds in organic fruit, hemp farming

Weed control is a problem as old as agriculture itself, but two projects from a Cornell AgriTech researcher aim to cultivate new methods for zapping the pesky plants, benefitting organic apple and grape growers and hemp producers in New York state and around the country.

Lynn Sosnoskie, assistant professor in the School of Integrative Plant Science, is collaborating on a $2 million project to study electric weed control in perennial fruit crops. She is also leading a $325,000 weed management study for hemp. Both studies are multi-institution, multistate undertakings that aim to provide growers with evidence-based, location-specific recommendations to suppress weeds and maximize yields.

weeds of the northeeast cover
group shot of weed team
Maria Gannett practices a walking cadence with a sprayer full of water.
Bryan Brown with weeds
book cover and cultivator in field
Lynn with potted weed at field day demonstration


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