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  1. 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...
  2. 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...
  3. 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...
  4. 2001-12-01 2 volumes Part I, Research publications in international journals Part 2, Reviews
  5. 2011-06-01 13 pages, illustrated African Organic Agriculture Manual Booklet Series, no. 2
  6. 2004-01-01 Notebook, various page numbers, illustrated
  7. 1995-01-01 32 pages, illustrated
  8. 1996-01-01 Agrodok 2 27 pages, tables
  9. 2000-10-01 64 pages, illustrated, photos Policy and Best Practice Document 7
  10. 1990-01-01 This IIED booklet draws conclusions on the relevance of development of small scale farmers' activities to restore soil and soil fertility in Hondurus.