Welcome!

Welcome to the University of Georgia Weed Science Homepage.

The weed science faculty and staff are committed to providing the information and resources you need to answer your weed control questions.


2024 Peanut/Field Corn/Soybean Weed Control Recommendations


Read about 2024 weed control recommendations . . .


UGA Programs for Controlling Ryegrass and Wild Radish in 2022/2023 Wheat

Ryegrass is the greatest weedy threat to grain production in Georgia. Ryegrass resistant to Osprey, PowerFlex, Axial XL, and Hoelon is spreading rapidly. Aggressive resistance management programs must be implemented or this weed will eliminate grain production in a field.

Wild radish is the most problematic broadleaf weed infesting nearly every Georgia wheat field, but management is not difficult if timely management decisions are implemented.

This circular is an effort to provide effective weed management programs for Ryegrass and Wild Radish in Wheat.

Read about wheat weed control programs . . .


UGA Weed Management Programs for Broccoli, Cabbage, and Cauliflower in 2024

Cultural, mechanical and herbicidal weed management are all critical components for long-term success. This circular focuses on maximizing weed control while minimizing crop injury for the following production systems: 1) transplanting into bareground, 2) seeding into bareground, and 3) transplanting into mulch.

Read about broccoli, cabbage, and cauliflower weed control programs . . .


2023 Cotton Weed Control in Georgia

Control Palmer amaranth, tropical spiderwort, nutsedge and grasses while maintaining effective pesticide stewardship.

Read about the available cotton weed control programs...



UGA Weed Management Programs for Leafy Greens for 2024 (Collard, Kale, Mustard, Turnip)

Weeds compete with the crop for light, water, nutrients, and physical space while often harboring troublesome insects and diseases. This ciruclar focuses on cultural, mechanical, and herbicidal weed management for production systems including: 1) seeding into bareground, 2) transplanting into bareground, and 3) transplanting into mulch.

Read about leafy green weed control programs . . .


UGA Weed Control Programs for Yellow and Zucchini Summer Squash in 2024

Crop rotation, tillage, and a sound herbicide program are all critical components for a successful production system. This ciruclar focuses on maximizing weed control while minimizing crop injury for production systems including: 1) seeding into bareground, 2) transplanting into bareground, and 3) transplanting into 'old' mulch.

Read about yellow and zucchini summer squash weed control programs . . .


UGA Weed Control Programs for Sweet Potato in 2024

Crop rotation, tillage, and a sound herbicide program are all critical components for a successful production system. This circular focuses on implementing sound management programs while minimizing crop injury when transplanting sweet potato.

Read about sweet potato weed control programs. . .


Watermelon Weed Control Programs for 2024

Crop rotation, tillage, and a sound herbicide program are all critical components for a successful watermelon production system. This circular focuses on minimizing crop injury while maximizing weed control and yield for the following production systems: 1) transplanting into bareground, 2) seeding into bareground, and 3) transplanting into mulch.

Read about watermelon weed control programs . . .


2021 Field Corn Herbicide Harvest Restrictions for Silage/Forage


Read about 2021 field corn herbicide harvest restrictions . . .


2020 Vegetable Fumigant Systems For Plasticulture in Georgia

Effective alternatives to methyl bromide exist but selecting the ideal fumigant, mulch, and herbicide program is challenging. Growers must understand how soil texture, moisture, bed compaction, and their cultural practices influence fumigant activity, planting intervals, and off-gassing concerns. This circular is provided to assist growers with developing the most effective system for their farm.

Read about methyl bromide alternatives . . .


Specialty Crop Visual Sensitivity Scale for 2,4-D and Dicamba for 2018

Download specialty crop visual sensitivity scale for 2,4-D and Dicamba . . .


Rolling Rye For Conservation Tillage Cotton Success

View the video...


The Biology and Ecology of Palmer Amaranth: Implications for Control

Palmer amaranth is a highly competitive weed of field corn, cotton, peanut, and soybean and has been confirmed to be resistant to glyphosate in nearly every agronomic county in GA. Glyphosate-resistant (GR) Palmer amaranth’s establishment and spread has been assisted by its rapid growth rate, extensive rooting structure, high seed production, physical seed movement (man, animal, water), and most importantly by pollen (wind) dispersal.

Growers must understand the biology and ecology of GR Palmer amaranth if effective control is to be achieved.






University of Georgia Herbicide Programs for Tropical Spiderwort Control in 2013 Cotton

Tropical spiderwort is a noxious, exotic, invasive weed that can spread quickly. Upon initial observation, tropical spiderwort appears to be a grass. While not a grass, it is a monocot (in contrast to broadleaf weeds, which are dicots) with leaves and stems usually fleshy and succulent. The stems will creep along the ground and root at the nodes. Vegetative cuttings from stems are capable of rooting and reestablishing following cultivation. Tropical spiderwort will produce seed above and below ground.








Suggestions?

We are continually adding new information to our website.

If there are additional topics or resources that are of interest to you, please describing what you are looking for.

Research


Disclaimer

This website may contain research results of use patterns of herbicides, some of which may not be currently registered for the particular use. Such results are included for informational purposes only and should not be taken as recommendations for use. Additionally, the University of Georgia does not guarantee nor warrant the standards of the products, nor do they imply approval of the products to the exclusion of others which may be similarly effective. Official University of Georgia weed control recommendations can be found in the latest edition of the Georgia Pest Control Handbook (Special Bulletin #28).