An investigation of the suitable methods for determining plant-available nitrogen in the soil of the Konya-Cumra plain

For determining the plant-available nitrogen in the soil, a greenhouse experiment was conducted to determine the most suitable chemical methods by growing wheat as a test plant. Correlations were calculated between the biological indexes, and nine different chemical methods were used to determine the plant-available nitrogen in the soil being studied. Out of the nine different methods, the NO3-N method is recommended for determining the plant-available nitrogen in the soil of the Cumra plain. -English summary