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Effect of crop rotation and husbandry and nitrogen rate on nitrate leaching and gross margins in an arable rotation - NT1807

Description
Long term data are required to assess effectiveness of husbandry changes aimed to reduce nitrate leaching, since resultant increases in soil nitrogen reserves could counteract the initial success of such measures in some cases. This study will aim to examine influences of crop rotation, management and nitrogen rate on nitrate leaching and gross margins in an arable system. Short and medium-term effects of different management practices (e.g. cover cropping, earlier drilling of cereals, variation of harvest data of root crops, delayed cultivation, straw incorporation and reduction in nitrogen fertilizer use) on nitrate loss will be quantified during an intensive arable rotation. Effects of management practices on yields will also be examined, with resultant data being used to develop and validate models analysing effects of agricultural practice on N balance. Results of the study will be followed through in successive years so that both management and nitrate implications for farms can be evaluated. Data from the study will contribute to knowledge of typical nitrate losses under a range of husbandry, soil and climatic conditions required by hydrologists modelling nitrates in water sources. Data will also contribute to development of modelling of both nitrate leaching and transformations in soil. 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 crop rotation and husbandry and nitrogen rate on nitrate leaching and gross margins in an arable rotation   (232k)
Time-Scale and Cost
From: 1995

To: 1998

Cost: £203,023
Contractor / Funded Organisations
ADAS UK Ltd.
Keywords
              
Fields of Study
Fertilisers and Nitrate Pollution