About our programs

The Cornell Weed Science website serves as a portal and home for informaton for commercial farmers and growers, turf and landscape managers, home gardeners and others to help you manage weeds in efficient and environmentally sound ways. See the individual lab websites for more information on our current research and outreach efforts.

Learn about our intercollegiate Weed Science Team.

Weed science lab websites

DiTommaso Lab - Weed ecology and management, School of Integrative Plant Science, Soil and Crop Sciences Section
Kao-Kniffin Lab - Belowground ecology of invasive plants and weeds, School of Integrative Plant Science, Horticulture Section
Sosnoskie Lab - Specialty crop weed management, School of Integrative Plant Science, Horticulture Section, Cornell AgriTech
Kumar Lab - Field crop integrated weed management, School of Integrative Plant Science, Soil and Crop Sciences Section
Weed IPM Program - Bryan Brown, NYSIPM Program
Ryan Lab - Sustainable cropping systems, School of Integrative Plant Science, Soil and Crop Sciences Section

Weed science people

Faculty and academics who specialize in weed science or whose research contributes to weed control strategies. See lab websites for support staff and graduate students who contribute to our work.

Antonio (Toni) DiTommaso

Professor

School of Integrative Plant Science

Soil and Crop Sciences Section

Associate Director

Cornell AES

Antonio (Toni) DiTommaso

(607) 254-4702
ad97 [at] cornell.edu

Weed ecology and biological weed management

Invasive plant species

Climate change impacts on weed performance and distributions

Jenny Kao-Kniffin

Professor

School of Integrative Plant Science

Horticulture Section

Jenny Kao-Kniffin

(607) 255-8886
jtk57 [at] cornell.edu

Weed science

Urban ecology

Rhizosphere biology

Lynn Sosnoskie

Assistant Professor

School of Integrative Plant Science

Horticulture Section

Cornell AgriTech

Lynn Sosnoskie

(315) 787-2231
lms438 [at] cornell.edu

Weed ecology

Weed management

Specialty crops

Vipan Kumar

Associate Professor

School of Integrative Plant Science

Soil and Crop Sciences Section

Vipan Kumar

(607) 255-2212
vk364 [at] cornell.edu

Integrated weed management, including weed biology and ecology, crop-weed competition and cover crops

Herbicide-resistant weeds and herbicide-based weed control

Artificial intelligence and precision weed control

Bryan Brown

Senior Extension Associate

NYS Integrated Pest Management

Adjunct Assistant Professor

School of Integrative Plant Science

Horticulture Section

Bryan Brown

(315) 787-2432
bryan.brown [at] cornell.edu

Integrated weed management

Culturally appropriate extension

Weed seedbank dynamics

Caroline Marschner

Invasive Species Extension Associate (DiTommaso Lab)

School of Integrative Plant Science

Soil and Crop Sciences Section

Caroline Marschner

cam369 [at] cornell.edu

Weed ecology

Invasive species

Weed identification

Matt Ryan

Associate Professor

School of Integrative Plant Science

Soil and Crop Sciences Section

Matt Ryan

(607) 255-4964
mrr232 [at] cornell.edu

Sustainable cropping systems and agroecology

Cover crops and ecological weed management

Organic production

Virginia Moore

Assistant Professor

School of Integrative Plant Science

Plant Breeding and Genetics Section

Virginia Moore

vm377 [at] cornell.edu

Breeding for sustainable cropping systems

Cover crops, intercropping, polycultures, organic farming systems

Legumes, forages, alfalfa, hemp

Ryan Maher

Organic Coordinator

Cornell AES

Ryan Maher

rmm325 [at] cornell.edu

Get local help

Our weed science faculty and staff work hand-in-hand with educators in local offices of Cornell Cooperative Extension as well as Regional Agricultural Teams to put our science-based solutions to work on farms and in homes and communities.