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Section 26.7 Weed Management

Key characteristics: Weed fact sheets provide a good reference for common weed identification. 

Management Option Guideline
Scouting/thresholds

Weeds may be unevenly distributed over a field. Localized areas of severe weed infestations or atypical conditions, such as poorly drained areas, high spots, and field edges, may be recorded on a weed map. A weed map should be on file for each field. Make a rough sketch of the field, including landmarks, boundaries, crop row direction, compass directions, roads, planting date, map preparation date, and any other important details. The following information should be indicated on the map: species of weed, size of weed, density of each species, and distribution of weed. Weed maps should be updated for each field twice per year: soon after planting to evaluate the success of the current season's program and at or near harvest to help predict weed control practices that will be necessary for the following year.

Site selection Refer to weed maps to avoid problem weeds when choosing fields for sweet corn.
Cultivation

Cultivation is useful in sweet corn weed control.

Steel in the Field

Banding herbicides Banding of herbicides at planting is useful in sweet corn production when combined with culitvation. Herbicide banding can result in up to 60 percent savings in herbicide costs. 
Cover Crops, Weed Seed Bank Assessment
Pesticides Cornell Integrated Crop and Pest Management Guidelines for Commercial Vegetable Production