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Composts. --- Composts --- Organic fertilizers --- soil fertility --- plant requirements --- nutritional requirements
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Soil --- Gestion du sol --- Soil management --- Fertilité du sol --- soil fertility --- Humus --- Organisation socioéconomique --- socioeconomic organization --- 631.452 --- 631.417 --- Soil fertility --- Organic chemistry of soil --- 631.417 Organic chemistry of soil --- 631.452 Soil fertility --- Congresses --- Asa --- Sssa
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Soils --- Soil fertility --- Analysis --- Échantillonnage --- Soil productivity --- Fertilizer movement --- Soil fertility. --- Analysis. --- Soil analysis --- Sampling --- Laboratory equipment --- Évaluation --- evaluation --- Statistical methods --- evaluation. --- Soils - Analysis
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Roots --- plant soil relations --- soil fertility --- nutritional requirements --- Nutrient transport --- biological development
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Picea --- soil fertility --- site factors --- nitrogen fertilizers --- forest ecology --- Infertile site
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Soil --- Soil analysis --- methodology --- soil fertility --- Standardizing --- Analytical methods --- Afnor --- Methode d'analyse --- France
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Soil --- Soil water balance --- Soil profiles --- Soil classification --- Topography --- soil morphological features --- soil fertility --- land use --- Geomorphology --- Belgium
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Cooperation. --- Cooperation --- Nitrogen metabolism --- Nitrogen fixation --- Root nodulation --- Inoculation --- Rhizobium --- soil fertility --- Nitrogen --- trees --- Leuven --- Peradeniya university --- Sri Lanka --- Belgium
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Sown pastures --- wastes --- Fertilizer application --- Plant response --- Nutritive value --- Chemical industry --- antibiotics --- soil fertility --- Biological production --- Belgium
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