Tasks and problems in modelling the penetration of the nutrients in subsurface environment

Olga Nitcheva & Olga Nitcheva
Bulgaria is famous for its soil fertility and very tasty fruits and vegetables. Rearrangement of the land use after the political changes has not yet been finished. The future association to the European Union will demand from us large amount of agricultural goods. That involves land use changes and intensive fertilizer application. The quality of the subsurface environment can be affected by these agricultural activities. The fertilizers, moving below the soil root zone, may contaminate...
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