In the effort of develo** precision agriculture tools, remote sensing has been commonly
considered as an effective technique for weed patch delineation, where weed infestations …

In relatively short‐term studies it is often difficult to identify the factors that are important in
determining the patterns of emergence for different weed species. When results from longer …

Mulches on the soil surface are known to suppress weed emergence, but the quantitative
relationships between emergence and mulch properties have not been clearly defined. A …

The species composition and density of weed seed in the soil vary greatly and are closely
linked to the crop** history of the land. Altering tillage practices changes weed seed depth …

Seedbanks and seedling emergence of annual weeds were examined in arable fields at
eight locations in the Corn Belt. Seed densities were estimated by direct seed extraction …

Many studies of plant competition have been directed towards understanding how plants
respond to density in monocultures and how the presence of weeds affects yield in crops. In …

The nonuniform spatial distribution of weeds complicates sampling, modeling, and
management of weed populations. Principles of a rational approach to analysis of weed …

Late-season weed escapes are often ignored because they rarely cause crop yield penalty.
Traditional weed management recommendations are based on the economic threshold (ET) …

Pesticide use in the United States is concentrated in the Corn Belt, mainly in the form of
herbicides on corn (Zea mays) and soybean (Glycine max). If this chemical load to the …

Various types of thresholds have been developed for weed management in an attempt to
provide a more rational approach to decision making. The economic threshold concept was …