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`To assess the contribution to soil organic matter of leys, straw, FYM and the effects on crop yield` - NT0302

See also NT0106
The supply of mineral nutrients (P, K, Mg) and the build-up, or depletion, of organic matter are critical aspects of low-input/`Organic` farming systems. ICAR Rothamsted has a wealth of valuable data on these problems, and continuing long and medium-term experiments which address them. The project aims to construct balance sheets-tables of all inputs and outputs which show whether gains or losses are occurring and to study trends under different arable cropping systems. The primary objective of this project is to provide basic information on mineral nutrient reserves and organic matter from which low-input farming systems can be developed. There are two secondary objectives also 1. To prepare mineral nutrient balance sheets 2. To monitor changes in soil organic matter as affected by cropping and organic manures. The work will advance our understanding of nutrient cycling and availability. It is vital that the AFRS retain expertise in non-N nutrients.

Time-Scale and Cost
From: 1991

To: 1993

Cost: £175,000
Contractor / Funded Organisations
Rothamsted Research (BBSRC)
Fields of Study
Fertilisers and Nitrate Pollution