Chemical selector

Crop type: Alfalfa
Application type: Preplant

Pounds of active ingredient per acre
Trifluralin 0.5 to 0.75
Product quantity per acre
1 to 1.5 pt Treflan HFP
Comments and limitations

Supplemental label. Controls grasses more effectively than broadleaf weeds. Apply before planting alfalfa and incorporate 2 to 3 inches deep within 24 hours. Use the lower rate in coarsely textured soils and the higher rate on finely textured soils. Some crop stand reduction can occure, especially with cool, wet weather, and deep seeding.

Product links (each will open in a new tab)
Treflan® TR-10® Granular Herbicide: Product label, Safety data sheet
Treflan® HFP Herbicide: Product label, Safety data sheet
Treflan® 4 EC Herbicide: Product label, Safety data sheet
Treflan® TR-10 Granular Herbicide: Product label, Safety data sheet
Treflan® HFP Herbicide : Product label, Safety data sheet

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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