A study involving research institutes and a local university has supported the use of compost manure in farming, saying its yields are higher than those of hybrid crops grown using fertiliser.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/kenya-compost-manure-increases-yields-study
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/all-africa
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/agriculture
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/kenya
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/natural-fertilisers
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/maize
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/africa
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/organic-farming