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Johnson County

Research-based Information You Can Trust — Localized for your needs

Johnson County
11811 S. Sunset Drive
Suite 1500
Olathe, KS 66061

Office Hours:

Monday - Friday,
8:30 a.m. - 5 p.m.

(913) 715-7000
(913) 715-7005 fax

Map to our office

K-State Research and Extension is committed to making its services, activities and programs accessible to all participants. Reasonable accommodations for persons with disabilities may be requested by contacting Johnson County Extension at (913)715-7000. Notify staff of accommodation needs as early as possible.

Kansas State University Agricultural Experiment Station and Cooperative Extension Service

K-State Research and Extension is an equal opportunity provider and employer.

Herbicide Help

Return to Crops and Livestock Agent Articles

Controlling weeds is almost always a challenge. When do you control them? What do you treat them with? What are the specific label requirements? Most of these questions can be answered with a little bit of help from some good resources.

K-State puts together a comprehensive herbicide publication each year called Chemical Weed Control for Field Crops, Pastures, Rangeland, and Noncropland. The latest version is available on-line at https://bookstore.ksre.ksu.edu/pubs/chemweedguide.pdf.

You can use this resource to see what herbicides are labeled for a given crop and for a particular timing (pre-emerge or post-emerge). Once that is narrowed down, look for more specific information the label for recommended rates and restrictions.

There are additional online label sources for more information:

Also, K-State Research and Extension Agronomy weed management has all these links and more in one spot.