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: Soybean
Application type: Postemergence
Apply only to Roundup Ready soybean. Thunder Master is a premix of 0.17 lb imazethapyr (Pursuit) and 1.5 lb ae glyphosate/gal. Provides foliar and residual control of many grass and broadleaf weeds. Apply with NIS plus AMS. Do not use other imazethapyr-containing products in the same crop season. Do not rotate to alfalfa or wheat for 4 months; field corn for 8.5 months; cotton, oat, sorghum, or sunflower for 18 months; or canola for 40 months after application. Do not allow grazing or feed treated soybean forage, hay, or straw.