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16 items found (Showing 1 - 10)
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    2002-01-01 Acidification of soil is a natural process with major ramifications on plant growth. As soils become more acid, particularly when the pH drops below 4.5, it becomes increasingly difficult to produce food crops. As soil pH declines, the supply of most plant nutrients decreases while aluminum and a...  
  2. 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.  
  3. 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...  
  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. 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...  
  7. 2010-10-20 Input from the ECHO network concerning the use of urine as a fertilizer.  
  8. 2005-07-20 Joel Matthewsreceived some feedbackabout his comments on low fertility soil and traditional varieties in EDN 86. In response, he sent the following additional comment.  
  9. 2010-07-20 We often come across interesting material related to articles in EDN that could not fit into the available space in the issue. We share the most relevant of those here.  
  10. 2008-07-20 Farmers in Nigerused bottle caps to distribute tiny amounts of fertilizer in each planting hole. Coca cola bottle caps hold 6 grams (0.2 oz) of fertilizer, and one capful was used for two to three plants.