Abstract
Study was aimed to determine the effect of mono-ammonium phosphate (MAP, NH4H2PO4) and K-Humate application on grain yield and grain phosphorus uptake efficiency which applied on Central Anatolian calcareous and basic reaction soil. The research was conducted at Bahri Dağdaş Agricultural Research Institute field in dry conditions during 2018 - 19 to determine the effect of phosphorus doses @ 0, 17.5 and 35.0 kg ha-1 and K-Humate @ 0 and 12 kg ha-1 on Bayraktar 2000 variety of bread wheat crop grain yield, agronomic (AE), physiological (PE) and apparent recovery (AR) phosphorus uptake efficiency.
 Results of the research revealed that increased phosphorus rate, enhances grain yield and amount of grain phosphorus uptake increase, while the grain AE, PE and AR were decreasing significantly. Additionally, with the K-Humate application with respect to control, the grain yield was positively affected in P0 and P17.5, while the grain phosphorus uptake amount was increased by 13%, in the P35 application the grain yield and the grain phosphorus uptake amount decreased by 9% and 5% respectively. In another direction, with the K-Humate application depending on control, in P17.5 application grain AE and AR were increased by 13% and 12% respectively, while grain PE decreased by 54%. Besides, with the K-Humate application according to control and in the P35 application grain AE, PE and AR were decreased by 66%, 51% and 40% respectively.
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