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A mathematical model has been produced to examine the impact of sewage sludge and fertilizer application to arable land and the effect of different crop regimes on the amount of nitrate leached to chalk groundwater. Previous work on nitrate leaching has concentrated on either a soil science or a hydrogeological approach with little overlap between the two. This study considered both fields to obtain...
A layered deterministic N-leaching model, IMPACT, has been calibrated using data from two study sites on the unconfined Chalk aquifer of East Anglia, UK. The model predicts nitrogen species movement resulting from the application of sewage sludges and fertilizers to arable land for different vegetation-soil-hydrogeological conditions. One site received sludge in the form of digested sewage cake...
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