01 جنوری 1985 This manual discusses the biology, economic status, and management of insects, diseases, nematodes, weeds, and vertebrates important to crop production in California. Photographs and other illustrations are intended to help the reader identify important pests and their damage, an essential first...
05 جنوری 1983 Prepared by the Cooperative Extension Service of Kansas State University, this bulletin decribes through words and pictures various diseases that attack Kansas wheat crops.
This publication discusses honeybee health, colony collapse and mitigative and preventive measures. It includes data collection and research to identify factors affecting honeybee health.
01 جنوری 2000 This publication has been prepared to assist beekeepers in preventing serious disease and pest-related damage to their beekeeping business. 26 pages, photos
Topics covered in this resource include: Soils and climate Varietal choice Planing and crop establishment Fertilisation Plant spacing for beans sown on 45cm rows Plant spacing for beans sown on 50cm rows Diseases Pests Harvesting