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: Spider Mites
This miticide is active on eggs and immature stages, it does not kill adult mites, but reduces egg laying in treated females. Since it does not kill adult mites it needs to be applied before mite populations reach damaging levels, usually while corn is in mid to late whorl stage. Application after the V15 crop growth stage is prohibited. Use is limited to western Kansas (west of Rt. 281). For ground application the boom should be equipped with 16-inch drop nozzles with nozzles directed to spray up and under the canopy at 10 to 20 GPA. For aerial application the label recommends a minimum of 5 GPA and to use the higher rates when foliage is dense. Onager is labeled for use on field corn, silage corn, and seed corn. Do not make more than one application per year. Signal word on label is CAUTION. REI is 12 hours. 45 Day PHI.