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2562 items found (Showing 1 - 10)
  1. Key Resource
    2009-01-20 All plants need certain mineral elements for proper growth, development, and maintenance. The basic structure of all organisms is built of carbon (C), oxygen (O) and hydrogen (H). Plants obtain these elements from water (H2O) in the soil and carbon dioxide (CO2) in the air, so no input is...  
  2. "The number of undernourished people in the world remains unacceptably high at about 925 million. Global food security issues exist now, and are especially of concern looking forward as world population is expected to increase by about 35% over the next 40 years. Agricultural output will need to...  
  3. All plants need certain mineral elements for proper growth, development, and maintenance. The basic structure of all organisms is built of carbon (C), oxygen (O) and hydrogen (H). Plants obtain these elements from water (H2O) in the soil and carbon dioxide (CO2) in the air, so no input is...
     
  4. Farmers face many challenges and constraints in terms of agricultural inputs. Synthetic fertilizersare often difficult for farmers to access or afford and may have low community acceptance. Moreover, knowledge of how to properly and safely apply synthetic inputs is often limiting or confusing....  
  5. Key Resource This 4 part training gives a broad overview and introduction to some basic soil characteristics: phases (solid, liquid, gas), texture, density, structure, reaction (pH), plant-water relationships, organic matter, biology and nutrients. After some classroom discussion we went head out to into the...  
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  7. 1996-10-19 What About Rhizobia Inoculants? How Adequate is Chicken Manure Tea as a Fertilizer? How to Make Fish Emulsion Fertilizer Pigeon Pea and Chickpea Release Phosphates Plant Tissue Nutrient Tests Available at Ohio State University "Feeding and Balancing the Soil" Course International Ag-Sieve
     
  8. 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...  
  9. Key Resource
    1985-01-01 Green manure crops are crops that are [often times in North America] grown to be turned under to increase soil fertility. Leguminous green manure crops ( i.e., those which can make nitrogen fertilizers from atmospheric nitrogen) can offer small-scale Third World farmers a tremendous number of...  
  10. Key Resource
    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...