Chemical selector

Crop type: Soybean
Application type: Preplant or Preemergence

Pounds of active ingredient per acre
Saflufencil 0.022 to 0.044
Product quantity per acre
1 to 2 oz (fall) 1 to 1.5 oz (spring) Sharpen powered by Kixor herbicide
Comments and limitations

Provides burndown and a short period of residual control of many broadleaf weeds, including marestail and pigweed species. Can be applied up to 2 oz/a as a fall treatment to control marestail and winter annual mustards. Can be applied at 1.5 oz/a at least 14 days prior to planting on medium and fine textured soils, but should be applied at least 30 days prior to planting on coarse-textured soils with less than 2 percent organic matter. Can be applied at 1 oz/a in the spring preplant or preemergence on most soils, but should be applied at least 30 days before planting on coarse-textured soils with less than 2% organic matter. Separate sequential applications by at least 30 days. Total seasonal use should not exceed 4 oz/acre. Do not apply after soybean begins to break through the soil surface. Apply with MSO at 1% v/v but not less than 1 pt/a, plus 1.25 to 2% v/v liquid UAN fertilizer, or AMS at 8.5 to 17 lb/100 gal spray solution. Do not apply as a tank mix or sequentially with other PPO-inhibiting herbicides such as sulfentrazone, flumioxazin, or fomesafen within 14 days of soybean planting on medium- and fine-textured soils and 30 days of planting on coarse-textured soils with less than 2% organic matter. Postemergence PPO-inhibiting herbicides such as Flexstar, Cobra, and Ultra Blazer can be applied 14 days after soybean emergence.

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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