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Effect of organic manures on medium-term N cycling and nitrate leaching (Previously NT0110) - NT1808

This study will aim to examine effects of application of organic manure to agricultural land on nitrate leaching, nutrient balance and economics in medium-term cumulative experiments in arable rotations. Each site will follow a 6 course rotation typical for the soil type, while 4 manure management strategies will be superimposed onto the rotation. Nitrate leaching will be measured from typical crop rotations and effects of manure applications on leaching will be quantified. Nutrient (especially N) balances for the different manure management systems under study will also be determined, while the practicalities of general manure management will be assessed in terms of economics and effectiveness in decreasing leaching. The study will provide data on N leaching and N balance for development and validation of experimental models, and will demonstrate to farmers that manures may be successfully incorporated into farm rotations. Furthermore, the project will contribute to knowledge of typical nitrate leaching losses under a range of husbandry, soil and climatic conditions required by hydrologists modelling nitrates in water sources. Repeated measurements on the same plots over several years will be valuable in developing models and understanding the behaviour of N residues in soils.
Project Documents
• Final Report : Effect of organic manures on medium-term N cycling and nitrate leaching (Previously NT0110)   (537k)
Time-Scale and Cost
From: 1995

To: 1998

Cost: £281,808
Contractor / Funded Organisations
Fields of Study
Fertilisers and Nitrate Pollution