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Fertilizers --- Manures --- Nitrogen fertilizers --- Phosphatic fertilizers --- Crops --- Nutrition
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nitrogen fertilizers --- Phosphate fertilizers --- Potash fertilizers --- Production --- Consumption --- Fertilizer industry --- FAO --- world
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chemi cals --- fertilizers --- cycling --- Soil water movement
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Zea mays --- Variété --- Varieties --- Engrais azoté --- nitrogen fertilizers --- Herbicides --- Résidu --- residues
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Turf --- Poa pratensis --- pesticides --- residues --- Urea --- nitrogen fertilizers --- Fertilizer application --- public health --- Tracer techniques --- Leaching --- USA
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Mineralization --- Byproducts --- Triticum --- fertilizers --- Nitrogen --- Fertilizer application --- Activated sludge --- Composts. --- Composts --- application rates --- organic matter
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nitrogen fertilizers --- nitrogen cycle --- soil fertility --- Wheats --- Prairies --- fallow --- Plant response --- Leaching --- Pollution --- Belgium
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Zea mays --- Poaceae --- Green feed --- Grazing --- Crop rotation --- Varieties --- Productivity --- nitrogen fertilizers --- Economic analysis --- Netherlands
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Humid tropics --- Leucaena leucocephala --- residues --- Alley cropping --- organic matter --- soil fertility --- nitrogen fertilizers --- Environmental impact --- Dactyladenia --- Senna
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