The effect of fertilizer rate and sowing depth on the some growth characteristics and yield and its components for three wheat cultivars(Triticum aestivum L.)

Abstract

An experiment was carried out at Yosefiya which located(30)km from Baghdad .three wheat cultivars were tested (IPA95,Rashid,and Sally) . Three fertilizer rates were applied (no fertilizer ,200kg N and 300kg N/ha) and two sowing depth were used (4and8cm) . Results showed that Shallow planting gave siginificant influence on plant height ,lodging index, number of spike/m2and grain yield. Whereas ,deep planting had significant effect on spike length ,number of spikelet /spike and number of grains /spike. In general sally cultivar gave the highest lodging index and Al- Rashed Cultivar gave the highest weight of 1000 grains and spike length.While IPA95 Cultivar gave the highest leaf area index ,number of spikes/m2 and numper of grains/ spike . the interaction between cultivar and fertility treatment was significant on the most studied traits while the interaction between Cultivar ,fertilizer treatment and sowing depth was not significant. fertilizer treatment of 300kgn/ha was superizer on the most studied characters.The highest yield was 4.2 ton/ hectare for the cultivar IPA95 with the fertilizer treatment of 300Kg N/hectare .