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Inga alley cropping
Inga alley cropping refers to planting agricultural crops between rows of Inga trees. It has been promoted by Mike Hands.〔David Adam, ''(Earthshakers: the top 100 green campaigners of all time )'' The Guardian, 28 November 2006〕
Using the Inga tree for alley cropping has been proposed as an alternative to the ecological destruction of slash and burn cultivation.〔Elkan, Daniel. ''Slash-and-burn farming has become a major threat to the world's rainforest'' The Guardian 21 April 2004〕 The technique has been found to increase yields. It is sustainable agriculture as it allows the same plot to be cultivated over and over again thus eliminating the need for burning of the rainforests to get fertile plots.
==Inga tree==
(詳細はCentral and South America. Inga grows well on the acid soils of the tropical rainforest and former rainforest. They are leguminous and fix nitrogen into a form usable by plants.〔rainforestsaver.org: (What is Inga alley cropping? )〕 Mycorrhiza growing within the roots (arbuscular mycorrhiza) was found to take up spare phosphorus, allowing it to be recycled into the soil.〔Guinness, Bunny. ''A "miracle cure"'' The Sunday Telegraph 5 December 2004〕
Other benefits of Inga include the fact that it is fast growing with thick leaves which, when left on the ground after pruning, form a thick cover that protects both soil and roots from the sun and heavy rain. It branches out to form a thick canopy so as to cut off light from the weeds below and withstands careful pruning year after year.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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