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  1. 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...
  2. 2018-10-31 This article is from ECHO Asia Note # 36. Soil chemical, physical, and biological properties range from those highly favorable to plant growth to those highly unfavorable to plant growth. It is rare—especially in the tropics—to find a soil in its natural state in which all properties are highly...
  3. 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...
  4. 2010-01-01 This article is from ECHO Asia Note #4 Does rice straw have any value? Looking at the practices of most farmers, it seems not! The burning of rice straw is a common sight during the harvest period in many parts of Asia. Yet a number of farmers think otherwise. One of them is Isidro Prado from...
  5. 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...
  6. 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population growth, have little choice but to crop their land continuously, with scarce resources to replace nutrients withdrawn by each successive crop.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...
  7. Small holder farmers and practitioners from Tanzania share agroecology best practices to improve soil fertility. English Subtitles
  8. Abstract, Makerere University Dissertations, 2019 Low crop yields due to low erratic rainfall, high evapo-transpiration, and deteriorating soil fertility in semi-arid areas of the country, have led to a quest for sustainable production practices with greater resource use efficiency in order...
  9. The result of several symposia held at the American Society of Agronomy and Soil Science Society of America annual meetings in Cincinnati, Ohio, November 1993, this volume brings together the latest ideas and knowledge for improving nutrient recommendations, examining the prospects of improving...
  10. Abstract, PLoS One, 2017 Sustainability of maize-based cropping systems is a major challenge for southern Africa, yet the demand for maize as staple food and animal feed in the region continues to increase. A study was conducted on a sandy clay loam (220 g clay kg-1soil) at Domboshawa in Zimbabwe...