Content of Phosphorus in Arable Land on the Teritory of the City Of Nis

Phosphorus has the status of an essential element for plant growth and development because it is contained in numerous compounds which are of the crucial significance for the physiological –biochemical processes. The aim of this paper was to examine the saturation of the soil with easily available phosphorus forms on the territory of the city of Nis in 2015. The total of 284 samples from 110 farms were collected. The analysis showed that that the soil of this area is well provided with easily available phosphorus. 40.8% samples belong to the class of supplied or even well-supplied soil, with the phosphorus content from 7% to 15% whereas only 5% of the samples belong to the class of the soil low in phosphorus