Chemical selector

Crop type: Corn
Application type: Postemergence

Pounds of active ingredient per acre
Nicosulfuron 0.031
Product quantity per acre
0.9 oz Accent Q, or 2.0 fl oz NIC-IT
Comments and limitations

Controls 4 to 12-inch shattercane, 8 to 18-inch rhizome johnsongrass, and certain annual grasses and broadleaf weeds in field corn. Can be broadcast applied over corn up to 20 inches tall (freestanding). For corn 20 to 36 inches tall, apply with drop nozzles. Accent application to V7 to V10 corn (7 to 10 leaf collars visible) increases the potential for ear malformation (pinching). This risk may be reduced greatly, but not eliminated, by using drop nozzles adjusted so as to not apply Accent into the corn whorl. Do not apply to field corn taller than 36 inches or with more than 10 leaf collars visible, whichever is more restrictive. Do not apply to seed corn or popcorn taller than 20 inches. Apply with NIS or COC. In addition, UAN or spray-grade AMS can be added to enhance performance on certain weed species. Sequential treatments can improve rhizome johnsongrass control. Do not apply to corn that was treated with Counter 15G or Counter 20CR in-furrow. Can be applied following T-band applications of counter 20CR, but injury potential still exists. Do not apply in irrigation water. Often tank mixed with dicamba or emulsified bromoxynil formulations to enhance broadleaf weed control. Use NIS rather than COC for these mixtures. Can be tank mixed with pendimethalin to provide late-season, residual grass control. A timely cultivation may be necessary to control suppressed weeds, weeds, beyond maximum size at application, or weeds that emerge after Accent application. Optimum timing for cultivation is 7 to 14 days after application. See label for insecticide compatibility, sprayer cleanup, subsequent cropping, feeding restrictions, and other guidelines.

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.

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