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Fertilité du sol --- soil fertility --- Collecte de données --- data collection --- Traitement de l'information --- Information processing --- Diffusion de l'information --- diffusion of information --- extension activities --- Mali --- Kenya --- 631.452 --- 631.42 --- 631.11 <66/67> --- Soil fertility --- Soil analyses and experiments --- Farms, farm properties and farming systems--States and territories south of the Sahara. Sub-Saharan Africa --- Theses --- 631.42 Soil analyses and experiments --- 631.452 Soil fertility
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Fertilité du sol --- soil fertility --- Système de culture --- cropping systems --- Connaissance indigène --- Indigenous knowledge --- Coton --- Cotton --- Manihot --- Maïs --- maize --- Accroissement de production --- Production increase --- Fertilisation --- Fertilizer application --- Mycorhizé --- Mycorrhizae --- Bénin --- Benin --- 631.452 --- 631.559 --- 631.11 <668.2> --- 631.153.7 --- Soil fertility --- Harvest yield --- Farms, farm properties and farming systems--Dahomey. Benin --- Changes in cultivation and production. Conversion to other systems --- Theses --- 631.559 Harvest yield --- 631.452 Soil fertility --- 631.153.7 Changes in cultivation and production. Conversion to other systems --- 631.11 <668.2> Farms, farm properties and farming systems--Dahomey. Benin --- Benin.
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