09 جنوری 1976 This is the second in a set of three how-to manuals that together provide a comprehensive overview of storage problems and considerations as they relate to the small farmer. Vol 2 is is an in-depth study of two major enemies: insects and rodents. 169 pages, illustrations
20 جنوری 2012 This bulletin provides information on the causal agents, distribution, economic imporance, symptons, epidemiology, and management of major diseases of pigeonpea. The test is supplemented with color photographs of disease symptoms and a diagnostic key is included to facilitate identification....
01 جنوری 1993 The purpose of this handbook is to provide a dianostic guide and general reference for diseases affecting perenial fruit and nut crops. although emphasis is given to crops grown in the tropics and subtropics, most of the important fruit crops grown in Australia are included. The book has been...
This scheme allows pest control workers to classify organisms, whether natural enemies or pests, according to the level of community knowledge, and to anticipate the unique opportunities and challenges that each kind of folk knowledge offers.
01 جنوری 1995 Analyzes contemporary crop breeding's successes and shortcomings and details new techniques of breeding food crops with inherited immunity. Discusses the pitfalls of classical plant breeding and the green revolution, offers case histories of crops that have been successfully bred to overcome...
01 جنوری 1994 This booklet focuses on foliar disease. In the ornamental industry, a plant's foliage is vitally important to the appearance it presents to customers, as well as the plant's overall health. Without healthy foliage processing sunligh through photosynthesis, its root system weakens, and the plant...
Book 3 explains deficiency symptoms of the following nutrients: Boron and Molybdeunum plus salinity, two or more deficiency symptoms, grow-box gardening, and Index.
01 جنوری 1990 This book will help to pinpoint and treat specific nutritional deiciencies in your plants. Book 2 explains deficiency symptoms of magnesium, copper, manganese, zinc, sulfur and iron.