Palmer amaranth (Amaranthus palmeri), a member of the "pigweed" family, is one of the most troublesome weeds in many southern row crops. Seed can germinate all season and plants can grow to over 6 feet in height. Plants have either male flowers that shed pollen or female flowers that can produce up to 600,000 seed per plant. One Palmer amaranth per 30 foot of row can reduce cotton yield by 6 to 12%.

Palmer amaranth (Amaranthus palmeri), a member of the "pigweed" family, is one of the most troublesome weeds in many southern row crops. Seed can germinate all season and plants can grow to over 6 feet in height. Plants have either male flowers that shed pollen or female flowers that can produce up to 600,000 seed per plant. One Palmer amaranth per 30 foot of row can reduce cotton yield by 6 to 12%.

Herbicides that are usually associated with contamination of straw/hay, turf clippings, manure, and composts are growth regulator herbicides or synthetic auxins, a group of herbicides that mimics plant hormones and regulates growth. These herbicides are labeled for control of broadleaf weeds in grass crops, such as pastures and corn; in turfgrass, including lawns, golf courses, parks, and highway turf; and in noncrop areas. Vegetable and fruit crops, as well as broadleaf ornamentals can inadvertently be injured by these chemicals through drift of spray droplets, volatilization, and spray tank contamination or by residues in straw, manure, turf clippings, or compost. Diagnosing the specific herbicide responsible for the plant damage can be difficult. This publication focuses on damage caused by herbicide residues.

DuraCor is a new herbicide currently registered for use in pastures and hayfields. ProClova is a new herbicide expected to be registered for use in January 2021. Both DuraCor and ProClova are used to control broadleaf weeds, however, a major benefit of ProClova (but not DuraCor) is the preservation of white clover. The objective of our research was to evaluate the efficacy ProClova on broadleaf weed species and safety on white clover.

This publication provides information on giant hogweed identification, including how to distinguish between look alike species, and what to do if you think you have found giant hogweed.

This publication reviews options for controlling common grassy weeds in grass forages including chemical and cultural management options. Specific weeds are discussed in detail including johnsongrass, Japanese stiltgrass, broomsedge, and foxtail species.

No-till seeding has become accepted practice for establishing forage grasses and legumes for a number of reasons. Foremost among these is that no-till management helps keep soils in place. Tilling soils to create a seedbed for new forage stands greatly increases the risk of soil erosion during the establishment period.