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Chemical selector

Crop type: Corn
Application type: Preplant or Preemergence

Pounds of active ingredient per acre
Acetochlor + Clopyralid + Flumetsulam 0.7 to 1.4 + 0.07 to 0.14 + 0.023 to 0.046
Product quantity per acre
1.5 to 3 pt SureStart II/ TripleFLEX II Herbicide/Trisidual Herbicide
Comments and limitations

These herbicides are for use in conventional or herbicide-tolerant field or silage corn. These herbicides may be used preemergence or early postemergence on corn up to 11 inches tall. The rate is dependent upon soil texture and organic matter. If soils are coarse-textured, use 1.5 to 2 pt/acre; if medium-textured and less than 3% organic matter, use 1.5 to 2.5 pt; and if 3% organic matter or greater, use 1.75 to 3 pt/acre. If soil textures are fine, use 2 to 3 pint/acre. The new formulations of these herbicides followed by II contain a safener allowing rates up to 3 pt. Read and follow label directions.

Pounds of active ingredient per acre
Acetochlor + Clopyralid + Flumetsulam 0.7 to 1.4 + 0.07 to 0.14 + 0.023 to 0.046
Product quantity per acre
1.5 to 3 pt SureStart II/ TripleFLEX II Herbicide/Trisidual Herbicide
Comments and limitations

These herbicides are for use in conventional or herbicide-tolerant field or silage corn. These herbicides may be used preemergence or early postemergence on corn up to 11 inches tall. The rate is dependent upon soil texture and organic matter. If soils are coarse-textured, use 1.5 to 2 pt/acre; if medium-textured and less than 3% organic matter, use 1.5 to 2.5 pt; and if 3% organic matter or greater, use 1.75 to 3 pt/acre. If soil textures are fine, use 2 to 3 pint/acre. The new formulations of these herbicides followed by II contain a safener allowing rates up to 3 pt. Read and follow label directions.

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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