Boron (B) Chemical Fractions and Its Relatıonships with Soil Properties in the Some Areas of Pistachios Grown in the South East Anatolia Region

Boron (B) is one of the essential nutrients required for plants. Determining of the relation between B fractions and soil components is useful tool to make assessments about the B dynamics in the soil and plant uptake. In this study, soil samples were taken from 0-30 cm soil depths from 15 different locations of Gaziantep in South East Anatolia Region to determine chemical fractions of B such as readily soluble B (KÇ-B), specifically adsorbed B (SPA-B), oxide bound B (OK-B), organically bound B (OM-B) and residual B (RES-B), and their relation to the soil properties. The average contribution of chemically defined fractions to total B were determined as KÇ-B 0.96%, SPA-B 1.47%, OK-B 0.84%, OM-B 0.84%, and RES-B 95.88%, respectively. Moreover, the relationship between soil B fractions and some soil characteristics has also been examined. The results of the study indicated that three was a positive significant correlations between soil organic matter contents and KÇ-B (p <0.01) and OM-B (p <0.05). Similarly, there was a positive (p <0.01) relationship between KÇ-B and OK-B. This could be interpreted that organic matter can be a key soil properties to increase the amount of KÇ-B in the studied soils.