Öz
Phosphorus, one of the macronutrients, is of great importance for soil fertility in terms of the sustainability of agricultural production. When the phosphorus (P) amounts in the soils of our country were investigated, it was determined that the total phosphorus (TP) amounts were at a good level, but the available phosphorus (YP) levels were insufficient. In this study, pH, EC, TP and YP contents of soil samples taken from 0-30, 30-60 and 60-90 cm depths at the coordinates determined in the Develi Plain soil were determined and examined. The lowest pH and EC values of the soils of the study area at 0-30, 30-60, 60-90 cm were 6.75, 6.80, 7.50 and 0.25 dS m-1, 0.25 dS m-1, 0.31 dS m-1, respectively, and the highest the value was measured as 9.88 and 110.1 dS m-1. In addition, the lowest TP content was 52.6 mg kg-1, 80.6 mg kg-1, 85.3 mg kg-1, the highest TP content was 1582 mg kg-1, 1004.5 mg kg-1, 950 mg kg-1, respectively, The lowest YP content at 0-30, 30-60, 60-90 cm was 5.1 mg kg-1, 0.1 mg kg-1, 1.15 mg kg-1, the highest YP content was 77.1 mg kg-1, 78.7 mg kg-1 respectively. It was determined as 1.52.3 mg kg-1. As a result of the study, the TP of the soil samples was found to be higher than the YP value in general.