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  1. 20-06-2008 Optimising nutrient cycles with trees in pasture fields Talking soil science with farmers Soil quality fand farm profitability Cover crops do it all Green manures Micro-organisms Feeding and watering the soil to increase food production Soil rehabilitation starts with more efficient cookstoves...
  2. 01-09-2005 This is the third edition of a self-published book. No respectable publisher would touch it with a ten foot shovel. Nevertheless, the book has now been sold around the world, translated into over a dozen languages and published in foreign editions on four continents. It has been talked about on...