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: Preplant or Preemergence
Fierce XLT is a premix containing 24.6% flumioxazin (Valor), 31.2% pyroxasulfone (Zidua), and 6.7% chlorimuron (Classic) for partial burndown and residual control of grass and broadleaf weeds. Can be applied in the fall, preplant, or preemergence to soybeans, but the best in-crop residual control of summer annual weeds will occur with application close to planting time. Apply with COC and tank-mix with glyphosate or other herbicides for enhanced burndown control in no-till. Do not apply in conjunction with products containing dimethenamid or metolachlor or severe soybean injury may occur. Do not plant field corn or wheat for 10 months; alfalfa, cotton, or sorghum for 18 months; or canola or any other crops not listed on the label for 30 months after Fierce XLT application.