Evaluation of Reduced Herbicide Application Strategies for Weed Control in Coarse‐Textured Soils

Abstract

This study evaluated the feasibility of using band‐applied herbicides in conjunction with cultivation as a weed management strategy to reduce amounts of herbicide applied to coarse‐textured soils. Corn ( Zea mays L.) and soybean [ Glycine max (L.) Merr.] yields, averaged over 3 yr, were not significantly different for band applications with one or two cultivations or for a cultivation plus broadcast postemergence herbicide application when compared with broadcast preemergence applications. Total pounds per acre of applied herbicide was reduced by 73% in the band treatments relative to the broadcast application rate. Midseason weed control in the band‐application treatment with cultivation was good to excellent. Weed control was inconsistent in the cultivation‐plus‐broadcast‐postemergence‐herbicide treatment. Weed control costs for corn and soybean in the band application plus one cultivation treatment were significantly reduced compared with broadcast application costs. Weed control cost for the band application plus two cultivations was slightly higher for corn and slightly lower for soybeans than for broadcast application. Band‐applied herbicides in conjunction with cultivation may be a viable, cost‐effective, and environmentally sound strategy for weed control in coarse‐textured soils.