Chemical selector

Crop type: Soybean
Application type: Preplant or Preemergence

Pounds of active ingredient per acre
Metribuzin 0.38 to 0.75
Product quantity per acre
0.5 to 1 lb Metribuzin 750F, or 12 to 24 oz Metribuzin 4F
Comments and limitations

Apply preplant up to 30 days before planting or preemergence to soybean. A sequential or "split-shot" treatment with one application up to 30 days preplant followed by a preemergence application often provides the best results. Add COC to enhance burndown of emerged weeds in no-till. Controls broadleaf weeds more effectively than grasses. Metribuzin (Sencor) has a narrow margin of safety. Plant seed at least 1.5 inches deep. Do not use on loamy sand or sandy loam with less than 2% organic matter. Do not allow grazing or feed forage from treated fields within 40 days. Can be tank mixed with other burndown or residual herbicides for broader spectrum weed control.

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.

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