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Chemical selector

Crop type: Alfalfa
Application type: Postemergence

Pounds of active ingredient per acre
2,4-DB 0.5 to 1.5
Product quantity per acre
1 to 3 qt Butyrac 200/2 4-DB 200
Comments and limitations

Controls seedlings of many broadleaf weeds. Apply to spring- or fall-seeded alfalfa at the 2 to 4 trifoliate-leaf stage and when weeds are less than 3 inches tall. Do not allow grazing or cut hay from treated fields of seedling alfalfa within 60 days and of established alfalfa within 30 days after treatment.

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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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