1. Home
  2. Chemical
  3. Herbicide
  4. Corn
  5. 2017
  6. broadleaf
  7. Jimsonweed
  8. Postemergence
  9. Laddok S-12
  10. Chemical selector

Chemical selector

Crop type: Corn
Application type: Postemergence

Pounds of active ingredient per acre
Bentazon + Atrazine + 2,4-D LVE
Product quantity per acre
1.33 to 2.33 pt Laddok S-12 + 0.25 pt 4 lb per gal 2,4-D LVE
Comments and limitations

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.

Pounds of active ingredient per acre
Bentazon + Atrazine 0.43 to 0.75 + 0.43 to 0.75
Product quantity per acre
1.33 to 2.33 pt Laddok S-12
Comments and limitations

Laddok S-12 is a premix of bentazon (Basagran) and atrazine (a restricted-use pesticide). Controls broadleaf weeds. Apply when weeds are small and growing actively and before they reach size limits listed on the label. Both bentazon and postemergence atrazine are contact herbicides; thorough spray coverage is required. Always add COC, Dash HC, UAN, or spray-grade AMS solution as adjuvant. Do not apply to corn taller than 12 inches. Do not cultivate 5 days before or after application. Do not allow grazing or feed treated forage for 21 days. Laddok application 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.

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.