Chemical selector

Crop type: Soybean
Application type: Postemergence

Pounds of active ingredient per acre
Quizalofop 0.03 to 0.075
Product quantity per acre
5 to 12 oz Assure II Herbicide/Targa
Comments and limitations

Controls many annual and perennial grasses including shattercane, volunteer corn and wheat, and rhizome johnsongrass. Apply with 1% v/v COC or 0.25% v/v NIS. Slightly higher rates are recommended west of I-135. Tank mixing with broadleaf herbicides can reduce grass 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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