Chemical selector
The Pesticide Selector includes suggestions for chemical control of pests in Kansas crops, which are provided by K-State Research and Extension, and may not be relevant for states other than Kansas. We will continue to expand this tool for help in selecting other types of agricultural chemicals, and for other states. Contact the myFields Team if you are interested in contributing content!
The herbicide performance ratings are taken from: C.R. Thompson, D.E. Peterson, W.H. Fink, P.W. Stahlman, and J.W. Slocombe. 2020. Chemical Weed Control for Field Crops, Pastures, Rangeland, and Noncropland, Kansas State University, January 2016. Contribution no. 16-029-S from the Kansas Agricultural Experiment Station. Find it online at the bookstore.
The insecticide recommendations are taken from: B.P. McCornack, S. Zukoff, R.J. Whitworth, J.P. Michaud, and H.N. Schwarting. 2019. Insect Management Guides. March 2018. Kansas State University Agricultural Experiment Station and Cooperative Extension Service. PDF formats are available here.
Click here for a How-to Tutorial.
Crop type: Sorghum
Application type: Postemergence
Atrazine is a restricted-use pesticide. These premixes of 1 lb bromoxynil and 2 lb atrazine/gal control many broadleaf weeds. Use up to two applications per season when weeds are small and growing actively but before they reach size limits listed on the label. Apply after 2- to 4-leaf stage but before grain sorghum is 10 inches tall. Can be tank mixed with dicamba to increase control of pigweeds, kochia, and field bindweed. Tank mixing with up to 8 oz/ acre 2,4-D increases control of devilsclaw and field bindweed but also increases potential for sorghum injury. Bromoxynil plus atrazine application is considered an atrazine best management practice for use in sensitive watersheds because the low rate of atrazine reduces runoff loss potential. Do not cut forage for feed or allow grazing within 30 days of treatment. Follow atrazine rate limits and label directions.