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29 items found (Showing 1 - 10)
  1. 1997-11-19 Discussion of possible disease organisms in manure. Many of us probably assume health problems originate when food is washed with contaminated water or because of poor human hygiene. However, it could also come from the use of manure as a fertilizer in the field.  
  2. 2004-04-20 Terra preta is very productive soil with long-lasting fertility—unusual in the tropics, where most soils are very weathered, highly acidic, and low in organic matter and essential nutrients. The key to terra preta soils long-term fertility seems to be charcoal; terra preta contains up to 70 times...  
  3. 2014-04-20 EDN 122 highlighted multi-purpose cowpea varieties with spreading vines that cover the soil. Below is an ECHO research update from South Africa relating our experience so far with a spreading cowpea variety intercropped with maize grown in a Foundations for Farming (FFF) system. “Living carpet”...  
  4. 1994-07-19 Nitrogen fertilizer should not be applied to trees and shrubs directly after transplanting.  
  5. 2005-01-20 Maradi Integrated Development Project has forced me to question the wisdom of assuming that increases of organic content and fertility are always best.  
  6. 1997-11-19 Principles for increasing organic matter in order to increase soil fertility. Little by little, work in a dozen countries has convinced us that the vast majority of soils can be made highly fertile. How? By using our first principle:maximize organic matter production.  
  7. 2014-04-20 Comfrey is a unique perennial plant that requires minimal maintenance after planting and that can give high, sustained yields of nutrient-rich leaves for use as fertilizer, animal feed and more. It is high in potassium (K) and other micronutrients, and seems to improve fruiting and disease...  
  8. 1994-10-19 The use of cover crops in orchards and plantations. Since the early 1900s legumes have been used as cover crops in oil palm plantations in Asia. More recently it is being evaluated for other trees: soursop (Annona muricata) in Costa Rica, citrus in Honduras and Surinam, bananas in Panama, etc....  
  9. 2004-04-20 Rice bean (Vigna umbellata) is one of the top five most commonly grown green manure/cover crops in the world.  
  10. 1999-03-19 This is a good example of how quickly seeds can multiply. “Of the 8 seeds that were sent 4 were planted in a placewhere sunlight was restricted to about 4 hours a day. These gave very few pods. The 4 others got more sunlight and we got a harvest of 185 seeds so far. We have planted 160 of these...