The effect of phosphorus and sulfur applications on wheat plant growed in phosphorus and sulfur deficiency conditions

Phosphorus (P) and sulfur (S) are important elements for yield and quality in plants. In this thesis, the effects of increasing doses of S and P applications on a P and S deficient soil under greenhouse conditions on green component dry matter yield, SPAD value and green component S, P and N concentrations of bread (Adana-99) wheat were investigated. According to the results obtained, increasing doses of S and P applications to the soil caused a statistically (p<0.05) significant increase in the green part dry matter yield, SPAD value and S, P and N concentrations of the wheat plant. Under the conditions of S and P deficiency, green party dry matter yield, which was 0.15 g plant-1, increased to 0.88 g plant-1, causing an increase of 486.6% at the dose of 100 mg kg-1 P and S applications. In parallel with the proportional increase in the S and P application doses from the soil, green part dry matter yields, S, P and N concentrations of the plant also increased. The results have shown us that 50 and 100 mg kg-1 of P and 25 and 50 mg kg-1 of S are ideal doses for the increase of S, P and N concentrations along with the dry matter yield of the bread wheat.