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Semiarid zones --- Tropical zones --- soil fertility --- Fertilizer application --- fertilizers --- nitrogen fertilizers --- Nitrogen --- research --- India --- Arid regions agriculture --- Fertilizers --- Soil fertility --- Soil management --- Congresses. --- Idfc
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soil fertility --- soil fertility --- land suitability --- land suitability --- data collection --- data collection --- Region wallonne --- Programme 1989 --- Belgium --- Belgium --- Region wallonne --- Programme 1989
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soil fertility --- Arid soils --- Clay minerals --- Ion exchange capacity --- Copper --- Zinc --- Iraq
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Peat soils --- Peat soils --- soil fertility --- soil fertility --- Afforestation --- Afforestation --- Fertilizer application --- Fertilizer application --- Leaching --- Leaching --- drainage. --- drainage --- reclamation --- reclamation --- Mineral content --- Mineral content --- Potassium --- Potassium --- Potash fertilizers --- Potash fertilizers --- Growth --- Growth --- Tourbiere ancienne --- Finland --- Finland --- Tourbiere ancienne
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soil fertility --- soil fertility --- soil types --- soil types --- Soil --- Soil --- extension activities --- extension activities --- Soil analysis --- Soil analysis --- Isa --- Relance agronomique --- France --- France --- Nord Pas de Calais. --- Picardy --- Picardy --- Isa --- Relance agronomique
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Rice fields --- Rice fields --- Paddy soil --- Paddy soil --- Green manures --- Green manures --- Tropical zones --- Tropical zones --- Legumes --- Legumes --- cropping systems --- cropping systems --- Nitrogen fixation --- Nitrogen fixation --- Sustainable agriculture --- Sustainable agriculture --- soil fertility --- soil fertility --- Asia --- Asia
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Nitrogen fertilizers --- Soils --- Plants --- Crops --- Nitrogen content --- Effect of nitrogen on --- Nutrition --- Azote --- Nitrogen --- Métabolisme de l'azote --- Nitrogen metabolism --- Fertilité du sol --- soil fertility --- European Union --- Environmental Sciences and Forestry. Soil Science --- Soil Fertility --- Soil Fertility. --- Nitrogen fertilizers - Congresses --- Soils - Nitrogen content - Congresses --- Plants - Effect of nitrogen on - Congresses --- Crops - Nutrition - Congresses
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Soil analysis --- Tissue analysis --- Orchards --- soil fertility --- soil chemicophysical properties --- Inorganic fertilizers --- Quality --- Organoleptic properties --- nutritional requirements --- Apples --- Pears --- Integrated control --- Analyse du vegetal --- Analyse du vegetal
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