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
Arthropod: True armyworm
Organophosphate, restricted use insecticide. Signal word on label: WARNING. Use 2 to 5 gallons of finished spray per acre by air or not less than 15 gallons by ground equipment for post-emergence foliar applications. To avoid contamination of irrigation tail water, do not flood irrigate within 24 hours following an application of chlorpyrifos. Downwind spray drift buffer zones of 150 feet for aerial and 25 feet for ground application must be utilized to protect listed aquatic areas. A 10-day re-treatment interval for all products containing chlorpyrifos has been established. Chemigation is allowed _ see label for more information. Twenty-four hour REI. Do not apply within 35 days before harvest of grain. Do not graze or harvest for silage within 14 days of last treatment. Do not feed treated fodder within 35 days after last treatment. Supplemental labels allow harvest after 21 days for rates below 1 lb. a.i. acre.