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1689 items found (Showing 31 - 40)
  1. 1997-01-19 Commonly called 'silk oak,' 'silver oak,' or 'grevillea,' Grivillea robusta, native to Australia, has become widely utilized in agroforestry throughout Africa and other tropical regions, despite the fact that it is not a legume.  
  2. 2001-04-20 Soil acidity, or low pH, limits plant growth in many parts of the world. Although low pH can harm plants in many ways, this article will deal only with one of these factors, aluminum (Al) toxicity.Al is the third most abundant element on the earth (after oxygen and silicon), and the most abundant...  
  3. 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.  
  4. 2004-01-20 When selecting a hedgerow species for alley cropping, keep in mind that leaves should readily decompose when applied to the soil.  
  5. 2016-08-17 Farmers and gardeners in semi-arid and arid regions of the world face two associated but separate problems, which limit the crops they can grow and the yield of these crops. The underlying problem is lack of rainfall needed for growing plants. The second is accumulation of salts in the root zone....  
  6. 2017-01-20 Using worms to create Living Soil results in : Nutrition: Delicious, nutrient-rich plants. Vitality: Plants growing in living soils are inherently stronger and need less protection, allowing low input food production methods to be used. Drought tolerance: Nutrients are in colloidal states rather...  
  7. 2015-07-23 Climate change will have a huge impact on the world’s poorest people. Crop yields have already gone down in the tropics and are projected to drop by 15-30% by 2080 in Africa, South Asia, and Central America (Hoffman 2013). Some countries could reach a 50% loss of agricultural productivity; in...  
  8. 2018-02-06 Speaker Bio: Dr. Tom Thompson is Associate Dean and Director of International Programs in the College of Agriculture and Life Sciences and Professor of Agronomy at Virginia Tech. He earned B.S. , M.S. , and Ph.D. degrees in agronomy and soil science. He was an academic department head at two...  
  9. 2014-10-27 A-frame levels can be used to trace contour lines for soil conservation, or irrigation ditches at % slope. They are highly accurate, and cost nothing.  
  10. 2014-10-20