RESPONSE OF FOUR WHEAT CULTIVARS ( TRITICUM AESTIVUM L ) TO RECOMMENDED FERTILIZER TREATMENT IN FOUR SITES OF THE WESTERN IRAQI UNDER PIVOT SPRINKLER IRRIGATION SYSTEMS

Abstract

Four applied experiments were conducted in four sites in the west desert of Iraq (Al-Anbar Area) during winter season of 2005/2006 to study the response of 4 wheat cultivars: Abu Ghraib, Sham 6, Iba 99 and Iba 95 as a main factor to the recommended fertilizers treatment (200 kg/ha DAP + 160 kg/ha Urea) and desert ecological conditions on growth and productivity grown under pivot sprinkler irrigation system from under ground water. RCBD was used with three replicates in all experiments. The results showed the following.1)Abu Ghraib cultivar gave the higher values in the productivity and physiological characters compared with other cultivars in all sites.2)All cultivars gave the highest yield in site 2 compared with other sites. Abu Ghraib gave the following values in this site: 530 branch/m2, 2300 gm dry weight/m2, 4310 cm2 leaf area/m2, 73 grain/spike, 35.16 gm/1000 grain, 3.5 gm/spike, 3724 grain yield kg/ha. Percentage of N, P, K in dry weight of plant was 0.613, 0.151, 0.136 respectively while percentage of protein and starch in grains were 13.35, 64.82 % respectively.3)Sham 6 cultivar scored the second value in the productivity in this study. Abu Ghraib and Sham 6 cultivars were more able to bear desert environmental conditions than Iba 95 and Iba 99 cultivars.4) There is benefits by investment soil and ground water in west desert of Iraq in wheat agriculture under pivot sprinkler irrigation system.5) Development of wheat agriculture in west desert may contribute in reducing risk of desertification.