Integration of animals in rubber plantations . Agroforestry Systems ( Holanda ) 4 ( 1 ) : 55-66 . MIEHE , S. 1986. Acacia albidia and other multipurpose trees on the fur farmlands in the Jebel Marra highlands , Western Darfur , Sudan .

... Total Yield of native and improved varieties of rice per hectare in India under continuous and rotation planting . ... added soil fertility with manure , hence animals become an integral part of these systems ( Plucknett , 1979 ) .

Other similar examples are the tree - fish - arable crop and tree - fish - animal systems in the middle and lower reaches ... The variations in silvopastoral systems range from planting trees in widely spaced rows in existing pastures ...