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
Controls or suppresses annual broadleaf weeds. Apply in at least 10 gal of water/acre from time corn emerges to tasseling. Do not apply from tasseling to dough stages. When corn is more than 8 inches tall, use drop nozzles to avoid application to corn leaves. Hybrids differ in response to 2,4-D; some are injured easily. Potential for injury is greater when corn is growing rapidly under high temperatures and high soil-moisture conditions. Low rates of 2,4-D in combination with other postemergence herbicides are safer to corn than higher rates of 2,4-D used alone. After application, delay cultivation for 8 to 10 days to allow corn to overcome temporary brittleness. Avoid spray or vapor drift to sensitive crops. Follow label directions.
Controls or suppresses annual broadleaf weeds. Apply in at least 10 gal of water/acre from time corn emerges to tasseling. Do not apply from tasseling to dough stages. When corn is more than 8 inches tall, use drop nozzles to avoid application to corn leaves. Hybrids differ in response to 2,4-D; some are injured easily. Potential for injury is greater when corn is growing rapidly under high temperatures and high soil-moisture conditions. Low rates of 2,4-D in combination with other postemergence herbicides are safer to corn than higher rates of 2,4-D used alone. After application, delay cultivation for 8 to 10 days to allow corn to overcome temporary brittleness. Avoid spray or vapor drift to sensitive crops. Follow label directions.
Adding 2,4-D to Laddok S-12 improves control of field bindweed, swamp smartweed, common sunflower, velvetleaf, and pigweeds. Apply to field corn when fully emerged but before the fifth leaf is visible. Add UAN, but not COC, as adjuvant. Do not apply to corn taller than 12 inches. This is considered an atrazine best management practice for use in sensitive watersheds because the low rate of atrazine reduces the potential for runoff loss. Follow atrazine rate limits and label directions.
Adding 2,4-D to Laddok S-12 improves control of field bindweed, swamp smartweed, common sunflower, velvetleaf, and pigweeds. Apply to field corn when fully emerged but before the fifth leaf is visible. Add UAN, but not COC, as adjuvant. Do not apply to corn taller than 12 inches. This is considered an atrazine best management practice for use in sensitive watersheds because the low rate of atrazine reduces the potential for runoff loss. Follow atrazine rate limits and label directions.