Combat weeds

摘要

Most state DOTS recommend integrated roadside vegetation management programs that couple planting sustainable vegetation with both mechanical and chemical methods of weed control. The Minnesota Technology Transfer/LTAP Program's comprehensive "Best Practices Manual on Roadside Vegetation Management" (Report 2000-19) suggests using a combination of the following weed-control methods: The use of insects or pathogens. The U.S. Department of Agriculture (USDA) conducts biological control programs that involve importing, propagating, and distributing weeds' natural enemies. These insects inhibit the growth and reproduction of weeds, and are best used in areas of large weed infestation. The Technical Advisory Group for Biological Control Agents of Weeds, a part of the USDA's Animal and Plant Health Inspection Service, provides guidance to researchers and recommendations to regulating agencies concerning the release of nonindigenous biological control agents.