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: Corn
Application type: Postemergence
Shieldex can be applied to all types of corn from emergence to V6 or 20 inches tall, for postemergence control of broadleaf weeds and grasses up to 5 inches tall, but prior to tillering. Apply with MSO at 0.5 to 1% v/v and a nitrogen fertilizer source such as UAN at 2.5% v/v or AMS at 8.5 lb/100 gal of spray. On corn up to 12 inches tall, a tank mix with atrazine at 0.5 to 2 lb of atrazine is recommended. Do not graze or feed treated corn forage or silage for 21 days after application. Corn can be replanted any time. Do not rotate to cereal crops for 3 months; alfalfa, canola, cotton, sorghum, soybean, or sunflower for 9 months; or other crops for 12 months after application.
Shieldex can be applied to all types of corn from emergence to V6 or 20 inches tall, for postemergence control of broadleaf weeds and grasses up to 5 inches tall, but prior to tillering. Apply with MSO at 0.5 to 1% v/v and a nitrogen fertilizer source such as UAN at 2.5 % v/v or AMS at 8.5 lb/100 gal of spray. On corn up to 12 inches tall, a tank mix with atrazine at 0.5 to 2 lb of atrazine is recommended. Do not graze or feed treated corn forage or silage for 21 days after application. Corn can be replanted any time. Do not rotate to cereal crops for 3 months; alfalfa, canola, cotton, sorghum, soybean, or sunflower for 9 months; or other crops for 12 months after application.