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This research was conducted to study the nutritional status of apple orchards soils in Qilla Saifullah during November, 2011. Soil samples were collected from three depths 0-30, 31-60 and 61-90 cm and analyzed for mineral N, hot water soluble B and AB-DTPA extractable P, K, Zn, Cu, Fe and Mn. The majority of soils were light in texture, alkaline in reaction, non-saline and moderately calcareous. The concentration of N showed that about 77% of the surface soils were adequate in N. The concentration of extractable P was also adequate in 80% samples. The K content showed that 3, 20 and 60% soils in 0-30, 31-60 and 61-90 cm depths, respectively were low. The orchards more than 85% were found low in organic matter. The analysis of AB-DTPA extractable Zn showed that 7, 23 and 47% soils in 0-30, 31-60 and 61-90 cm depth respectively were low. The Cu and Mn results showed that none of orchards were found deficient in all three depths. The results of B showed that 17% in 61-90 cm depth was low whereas 77, 57% and 47% in three depths, respectively were adequate. The soils of apple orchards were low to marginal in Zn, Fe and B to varying levels. The frequency of Zn deficiency was highest followed by Fe and B. AB-DTPA nutrients showed different correlation trends for organic matter, pH and EC. The AB-DTPA extractable Zn, Fe, Cu, Mn and B had positive non-significant correlation with organic matter in the surface and subsurface soil. Micronutrients such as Zn and Fe had negative and non-significant correlation with EC and pH. The AB-DTPA extractable phosphorus showed positive non-significant correlation with organic matter. The AB-DTPA extractable potash had positive significant correlation with lime and organic matter in the surface and subsurface soils and negative non-significant correlation with pH.
Keywords: Apple; Balochistan; Extractable P; Mineral N; Nutritional status; Soils