University of Wyoming researchers will use kochia in a five-year study to help find a solution to weed-resistance to herbicides.
Department of Plant Sciences associate professor Andrew Kniss has received a National Institute of Food and Agriculture grant to analyze methods of weed control other than herbicide.
Experimental kochia populations will be seeded in fields without major infestations, and all sites will be sprinkler irrigated, said Kniss, in the College of Agriculture and Natural Resources. The populations will have herbicide-resistant and susceptible strains at a known ratio. The fields will be exposed to varioustreatments including crop rotation and tillage. Soil samples collected eachfall will be used to record management practice data relative to kochia.
The sites are at research stations near Powell, Scottsbluff, Neb., and Huntley, Mont. The sites represent three different regions significantly affected by the study’s weed-of-choice.