These online guidelines work upon: increasing understanding of the local environment and how it, the crop and other yield-determining factors interact; improving management of cropping systems and thus, sustainable yield; and increasing crop diversification. They are not a set of static rules; on the contrary, they encourage modifications in order to address local needs and circumstances after a cycle of learning, thought and discussion among all collaborators.
FAO (2003): On-Farm Trials for Adapting and Adopting Good Agricultural Practices. Suitable Methods of Tillage for the Farm. Rome: Food and Agriculture Organization (FAO) URL [Accessed: 01.03.2012]