Water Use Efficiency for Selectees of Sorghum

Abstract

Field experiment was carried out in experimental field of Field Crop Dept. of the College of Agricultural - University of Baghdad /AL-Jadriya ، in spring and autumn seasons of 2017. RCBD by split plot arrangements with three replicates were used. The results had shown selection for earliness AHS1and ATS1 by honeycomb and conventional methods from its origin (Abo- Akefa) that after the first selection cycle، gave higher grain yield per area، and WUE (6.92، 3.80 ton ha-1 and 1.39، 0.75 Kg.m-3 for each، respectively). As well as the same selected gave higher STI 1.50، 1.48 in 75% and 1.44, 1.43 in 50% of irrigation quantities، respectively. The increase in water content significantly increased the grain yield per area، total irrigation quantity gave higher yield (5.87 tonha-1). While 75% from irrigation quantity gave 5.03 ton ha-1 ، this was reflected in grain yield، which reduced 14% opposite of reduction in water quantity from 7000 to 5250 m3ha-1، and the two quantities of irrigation did not differ significantly، which indicates the possibility of 75% of full irrigation، especially in areas suffering from water scarcity، such as southern Iraq.