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20 items found (Showing 1 - 10)
  1. Key Resource 1989-01-02 [see also 631.491 YOU - volume updated, and with title change] This book is a review of the potential of agroforestry for soil conservation, treated in its wider sense to include both control of erosion and maintenance of fertility. The objectives are: To summarize the present state of knowledge...  
  2. Key Resource 2016-09-28 Farmers in many parts of the world, because of human population growth, have little choice but to crop their land continuously, with scarce resources to replace nutrients withdrawn by each successive crop. Crop residues are often lost as a source of organic matter and mulch, usually through...  
  3. Key Resource 1996-09-01 Indigenous soil and water conservation practices are rarely acknowledged in the design of conventional development projects. Instead, the history of soil and water conservation in Africa has been one of imposing external solutions without regard for local practice. There is a remarkably diverse...  
  4. Key Resource 1992-03-01 Water is everywhere - its physics and chemistry, rain, evaporation, infiltration, underground, the intimate relationship between life and water, and other natural phenomena. Its effects and applications need to be understood: run-off, erosion, soil drainage and irrigation. These comprise the main...  
  5. Key Resource 1992-01-20 In simplest language, agroforestry is the production of trees and of non-tree crops or animals on the same piece of land. The crops can be grown together at the same time, can be grown in rotation, or can even be grown in separate plots when materials from one are used to benefit another....  
  6. Key Resource 2012-01-01 Asia makes up less than one third (30%) of the world’s land area and yet carries over half (56%) of the world’s population. Moreover, the average population density of Asia becomes a significant long-term problem when food production is considered. Some countries in Asia have a population density...  
  7. Key Resource
    2013-04-16 Smallholder farmers and agricultural development workers are reporting changes in climate. For example, during the 2012 ECHO Agricultural Workshop in Asia, 63 attendees representing at least 25 agriculture and community development organizations from across Myanmar were polled about their...  
  8. Key Resource 1989-01-01 This Agrodok discusses green manuring and several other forms of soil improvement in the tropics. In particular, we shall pay attention to plants that can fix atmospheric nitrogen: the legumes. Due to this capacity these plants do not require nitrogen fertilization, which makes them very suitable...  
  9. Key Resource 2014-01-01 In order to achieve high levels of agricultural productivity in the tropics at the lowest possible economic and ecological costs, we need to properly understand the relationship between nutrients in the soil and crop productivity. For this to happen, the current understanding needs to change. The...  
  10. Key Resource 2006-04-01 There are two parts to this document; part 1 provides a brief description of the things a college student should consider as he/she chooses opportunities for learning and part 2 lists organizations that provide some practical training. The second section will be most useful for individuals...