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Article history: Received: 01 September, 2020 Accepted: 26 November, 2020 Online: 14 December, 2020 The apple tree (Malus domestica) is an agricultural species of great importance in Morocco. Currently, it occupies about a quarter of the surface of fruit-bearing rosaceae. Apple tree production has evolved rapidly, stimulated by a buoyant market, a varietal range which is tending to diversify and a dynamic profession. The present study aims to determine the physico-chemical properties of soil and apple leaves in Beni Mellal-Khenifra region, Morocco. Data collection was consisted to sample the soils at different depths, three Pearson correlation coefficients were determined: i) Correlation between organic matter and soil mineral elements, ii) Correlation between clay content and soil mineral elements and correlation between CaCO3 content and soil mineral elements. The analytical results of soils were compared to reference values. The results show that there is no correlation between these mineral elements and the rate of CaCO3 and clay fraction. Analysis of the main components showed that the apple leaf contains more sodium, copper and zinc and less magnesium, phosphorus and potassium. The coefficient of variation (CV) of manganese content expressed as a percentage is significantly higher than that of the other elements, while the potassium content is the lowest, in particular for magnesium and sodium the coefficient of variation is zero. In apple orchards in the Middle Atlas, there are great variations in terms of yield levels, fertilizer inputs, soil richness in nutrients and their concentration at leaf level. These variations are due to differences in cultivation practices, in particular fertilization, because the relationship between apple yield and nutrient content at soil and leaf level is significant.

Evaluation of the Physico-Chemical Properties of Soil and Apple Leaves (Malus Domestica) in Beni Mellal-Khenifra Region, Morocco