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L'alimentation minerale de onze parcelles du vignoble de Mascara a ete appreciee pendant deux annees consecutives par l'analyse des limbes et des petioles preleves a la nouaison et a la veraison.La nutrition des parcelles etudiees est mal assuree du fait de conditions pedoclimatiques particulieres et d'une fertilisation mal adaptee. Si les niveaux d'apport d'engrais azotes (33 unites N/ha/an) et phosphates (60 unites P2O5/ha/an) paraissent suffisants, les modalites d'epandage et la forme des engrais doivent etre revues. La fertilisation potassique est nettement insuffisante et les doses devraient passer de 75 a 100 ou 150 unites K2O/ha/an.+++The mineral supply of the Mascara vineyard (Algeria) has been estimated in eleven lots, during two years, by the analysis of leaf blades and petioles sampled respectively at fruit-setting and veraison stages.The nutrition of these plots is unsufficient because of the particular pedoclimatic conditions and uncorrect applied fertilization. The level of nitrogenous (33 N units/ha/year) and phosphorus 60 P2O5 units/ha/year) fertilization appears as sufficient but the fertilizer form and its spreading modalities have to be modified. The potassium fertilizing amount, now about 75 units/ha/year, is very low and has to be raised up to 100 or 150 units/ha/year.

Appréciation de l'alimentation minérale du vignoble d'appellation garantie (V.A.O.G.) de Mascara (Algérie)