The effects of different phosphorus sources on p uptake and vertical phosphorus movement in calcareous soils

Increasing the efficiency of phosphorus containing fertilizers dependent to limited raw material sources is very important for effective use of sources as well as minimizing possible environmental risk. Because of this reason, effects of MAP fertilizer phosphorus in different forms (liquid and granule) and soil amendment containing humic and fulvic acid (HA+FA) mixture applications on growth and phosphorus uptake of bread wheat selected as model plant and vertical movement of phosphorus in soil were investigated. Opposite of previous researches, in present MSc thesis no effect of HA+FA application on neither phosphorus uptake nor plant development was found and this opposite effect might be attributed to low soil organic level. However to prove this hypothesis, more detailed basic research activities are needed. Although application of soil amendment had no effect on biomass yield, its increasing effect even for phosphorus applied as granule on vertical movement was determined. In general, phosphorus applied in liquid form so far that applied in granular form increased phosphorus movement in so soil as well as enhanced the phosphorus nutritional status of model plant bread wheat. Obtained results in this MSc thesis in supportive manner to formerly obtained limited results, show that application of phosphorus containing liquid fertilizer may increase the efficiency of phosphorus and so that enhance plant yield, as well.