Chemical selector

Crop type: Corn
Application type: Preplant or Preemergence

Pounds of active ingredient per acre
Flumioxazin + Pyroxasulfone 0.063 + 0.08
Product quantity per acre
3 oz Fierce Herbicide
Comments and limitations

Fierce Herbicide is a premix of Valor and Zidua Herbicide formulated as a dry product for early preplant preemergence broadleaf and grass control in field corn only. Fierce Herbicide should be applied to the soil surface in a no-till or minimum-till system 7 to 30 days before corn planting and to conventional-till 30 days before corn planting. Fierce Herbicide is activated with precipitation and effectively controls many grasses as well as small and large-seeded broadleaf weeds. It may be tank mixed with glyphosate, 2,4-D, dicamba, atrazine, and others (see label) to control emerged weeds. Follow label directions.

Pounds of active ingredient per acre
Flumioxazin + Pyroxasulfone 0.063 + 0.08
Product quantity per acre
3 oz Fierce Herbicide, or 6 oz Fierce EZ
Comments and limitations

Fierce Herbicide is a premix of Valor and Zidua Herbicide for early preplant preemergence broadleaf and grass control in field corn only. Fierce Herbicide should be applied to the soil surface in a no-till or minimum-till system 7 to 30 days before corn planting and to conventional-till 30 days before corn planting. Fierce Herbicide is activated with precipitation and effectively controls many grasses as well as small and large-seeded broadleaf weeds. It may be tank mixed with glyphosate, 2,4-D, dicamba, atrazine, and others (see label) to control emerged weeds. Follow label directions.

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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