Corn growers should make a weed inventory to aid in the selection of weed control programs. By tailoring control programs to fit the problems in each field, growers can minimize weed control costs while maximizing yields and profits.

The first step in cultural weed control is the selection of a corn hybrid that is adapted to local growing conditions. Timely planting along with proper fitting in tilled situations or proper adjustment of no-tillage planters ensures rapid germination and a …

Weed control in zone/ no-tillage corn is more difficult than in reduced or conventionally tilled and planted fields for two reasons. First, some weed control options are eliminated in zone/ no-tillage cropping systems.

In addition, there is cross-resistance among the different triazine herbicides used in corn, soybeans (Sencor), and alfalfa (Sencor and Velpar). This situation has prompted refinements in the control guidelines for annual broadleaf weeds in field corn.

Home Corn Weed Control in Corn Weed Control in Zone/No-Tillage Corn Table 3.7.4. Burndown for zone/no-tillage corn

Home Corn Weed Control in Corn Weed Management Methods Table 3.7.2 Labeled application timings for corn herbicides

Corn chamomile: Stems are lightly hairy, green, red in strong light, and 8-20” (20.3-50.8 cm) tall. Leaves are alternate, 0.8-2.4” (2.0-6.1 cm) long by 0.4-0.8” (1.0-2.0 cm) wide, and leaflet lobes are 0.03” (0.08 cm) wide.

*Atrazine applications for corn are restricted to a maximum of 2.5 pounds active ingredient per acre (lb. ai/A) per calendar year. In addition, there is a per-application maximum of no more than 1.6 or 2 lb. ai/A depending on soil erodibility (as defined …

Crop rotation, sound soil management practices, the use of certified seed of recommended varieties, proper seedbed preparation, and timely planting all contribute to weed control in small grains.

Integrating herbicide programs with harvest weed seed control and other fall management practices for the control of glyphosate-resistant Palmer amaranth (Amaranthus palmeri).