Abstract
Pomace is the solid residue by-product resulting from the extraction of olive oil. Their high content of organic compounds gives them the possibility of being used also as green manure. We have tried this amendment approach on two varieties of cherry grown in the Tlemcen region. The Sunburst and the Black Bigarreau. Its use in combination with N.P.K fertilizers increases the carbon content of the soil, boosts the formation of May bouquets, and improves the water-holding capacity of the clay-humic complex. The results of this study showed that olive pomace used as a fertilizer, alone or in combination with N.P.K mineral fertilizers creates an advantage on the phenological and biochemical aspect, especially on the Black Bigarreau variety.