An ecological evaluation of three systems of farm management using field beans
An evaluation and comparison of the flow of geochemicals through three systems of farm management is made, using Vicia faha L. as a crop phytometer. Organic manures form the only nutrient addition to one system (Organic), artificial fertilizers alone are applied to the second (Stockless), and the th...
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Durham University
1975
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| Online Access: | http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.468307 |