EFFECT OF ORGANIC FERTILIZER, PHOSPHORUS FERTILIZERS SOURCES AND AMOUNTS OF IRRIGATION WATER IN CONTAINT CORN PLANT FROM P

Abstract

To study  impact of organic fertilizer, P sources and irrigation water  amounts in content of corn from phosphorus  afield experiment  was conducted  in  Agriculture  College – University of  Baghdad at  year  2012 by using three  sources of  fertilizers phosphate  ( triple super phosphate TSP, di ammonium phosphate DAP, urea phosphate UP) at  rate 100 kg p.ha-1  and  two  levels  of organic  fertilizer (0,1.5 Mg.ha-1) and  three levels of  irrigation  water which  were  levels 60%,80%,100% of  total  water  requirement  by plant (675mm).

theresults showed superiority source urea phosphate UP significantly between different sources of phosphorus in  P concentrations  increased in each of the dry matter and grain , which amounted to 0.27% , 0.67% respectively. Addition of  organic fertilizer significantly impact  where achieved the highest rate of the concentration of phosphorus in the dry matter and grain amounted to 0.24% , 0.58% respectivly  . level W3 (100% of the  total water requirement ) achieved  the highest rate of concentration of  P compared to the levels other , also effected significantly  di and tri   interaction in the concentrations of  P in the dry matter and grain respectivly .