Chemical selector
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.
Click here for a How-to Tutorial.
Crop type: Sorghum
Application type: Preplant or Preemergence
Sharpen can be applied preplant surface, preplant incorporated, or preemergence to grain sorghum. Do not apply to sorghum that has emerged, or significant crop injury may result. Sharpen has excellent burndown activity of broadleaf weeds and should be applied with MSO at 1% v/v (minimum of 1 pt/a) plus AMS 8.5 to 17 lb/100 gal or liquid nitrogen at 1.25 to 2.5 gal/100 gal. Sharpen may be tank mixed or applied sequentially with but not exclusively with Clarity, Outlook, atrazine, or glyphosate. Sorghum forage can be harvested, fed, or grazed 70 days or more after application. Sequential applications with Sharpen or Verdict require 14 days between applications. Do not apply more than 0.111 lb/a saflufenacil per cropping season. Do not use if organophosphate or carbamate insecticides were used at planting.