| http://www.w3.org/ns/prov#value | - In dryland farming, after harvesting his cereal, the farmer lets sheep or other livestock graze on the field, their manure serving to regenerate the soil then the clover-like plant of the alfalfa family - called medic- is planted, to fix nitrogen needed in the soil, and, at the same time, bind the particles of earth together, preventing soil erosion, and also provide fresh fodder for the lives
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