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8323 items found (Showing 7941 - 7950)
  1. 2 volumes, illustrated, tables  
  2. 2011-01-01 Continued population growth, rapidly changing consumption patterns and the impacts of climate change and environmental degradation are driving limited resources of food, energy, water and materials towards critical thresholds worldwide. These pressures are likely to be substantial across Africa,...  
  3. 2012-01-01 Well written and easy to understand, An ILLUSTRATED GUIDE TO PRUNING, Third Edition is a must-have for anyone interested in the pruning and maintenance of trees. Filled with updated illustrations, photographs, and examples, this completely updated guide is designed to help readers understand and...  
  4. 1993-01-01 The aim of this series of publications is to bring together published information on selected genera of trees (Acacia) which have the potenital to increase the supply of fodder for ruminants. Each booklet summarizes published information on the fodder characteristics and nutritive value of one...  
  5. The presentation reiterates the underlying concepts, principles and objectives of diagnosis and design used to analyze land use systems, problems and constraints and to identify agroforesty solutions from a systems perspective with an interdisciplinary approach. It focuses on the application of...  
  6. The presentation explains what systems are all about and how they allow to comprehend realties and facilitate the formulation of working hypotheses. The basic concepts of a system, such as its boundaries, structure, function, state and types are explained. The presentation then highlights the...  
  7. 1987-01-01 Agroforestry systems using nitrogen fixing woody perennials, such as Leucaena Leucocephala and Gliricidia sepium, planted in contour hedges on hillsides (or alleys on level ground), have proven to be as inexpensive and effective technology to control soil erosion, improve soil structure, and...  
  8. 2012-01-01 Includes articles on annual staple foodcrops in large rotated fields, biennial horticultural foodcrops with small rotated plots in dooryard gardens, commercial production of free-range chickens with night shelters in dooryard gardens, perennial foodcrops & fruit trees in large permanent...  
  9. 2003-01-01 This binder contains reference materials for green manure/cover crops, practices of agroforestry, salt, dryland farming, nutrition and ECHO help.  
  10. 2000-01-20 During the Green Revolution in many developing countries, agroforestry systems tended to reflect modern agricultural systems by their intensive use of fertilizers, pesticides, and site modifications to fit the desired crop. Since the 1980's, agroforestry has learned from traditional indigenous...