1. 2017-02-09 Anaerobic digestion, or biodigestion, involves the microbial degradation of organic materials in an oxygen-free environment. Feedstocks for anaerobic digestion include livestock manures, crop residues, culled fruit and vegetables, food waste, and other organic by-products. The process produces...
  2. 2010-07-20 One high quality and universally available source of all the major macronutrients (nitrogen, phosphorus and potassium) is human urine. Using human urine as fertilizer is not unprecedented, but for various reasons in most countries it is not commonly considered as an option, especially for growing...
  3. 2017-08-01 Faced with the challenges of smallholders in terms of agricultural inputs and the limitations of mineral fertilizer, ECHO's West Africa Impact Center has provided farmers with practical and economic knowledge. One example of this is the technique of manufacturing organic liquid fertilizer.