부산대학교 도서관

Field experiment located at Nineveh province was carried out by using randomized complete block design RCBD to study the effect of phosphate fertilizer levels (32 and 64 and 96 kg P / ha) with two depths 10 and 20 cm. and using four placement fertilizer distances (10. 20. 30 and 40 cm). with three replications wheat crop cultivar sham-6 was cultivated in a calcareous soil (clayey texture) with 10 mg p / kg soil. Results revealed that maximum yield. P- grain content and number of spikes were found in treatments received high levels of super phosphate (96 kg p / ha). Beside that the treatments of depth 20 cm and distance 40 cm at all levels of P gave an increase in yield compared to other treatments. However T24 (96 kg p / ha. 40 cm distance. and 20 cm depth) was the best treatment that gave a significant increase in yields. P- grain content and number of spikes.