Estimation of Plant Available Boron Status in Some Agricultural Soil of Pasinler Plain With Chemical and Biological Method

The purpose of this investigation was to determine chemical extraction and biological method to be used in determining plant available bor in Pasinler Plain Soils. For this purpose 11 representative soil samples were sampled. A glasshouse experiment was conducted using randomised block design was used in three replicates. Corn (Zea mays L.Var.Akpınar) plants were harvested 8 weeks after germination and, rye plants (S.Cerale Tetraploid) were harvested 17 day after germination. Boron uptake of the tested plants were determined. In order to determine the available boron contents of soils, chemical methods (Azometin-H spectrofotometric and ICP spektrometric) were used: Boron content of tested plants (corn and rye) were taken as biological indexes. As a result, the Azometin-H spectrofotometric method indicated that 7 of 11 soil samples (1,2,7 and 9 soil number) had not enough plant available B content. Where as the 11 soil samples had enough sufficiency for B content of corn plants. On the other hand , it was obtained that B content of rye plants was enough in 7 out of 11 soil samples based on the Neubauer seedling technique. Conclusion in 11 soil samples representing Pasinler Plain ,Azometin-H spectrofotometric and ICP spektrometric method produced the highest correlation (p<0.05) with the biological indexes.