Effects of planting date and plant density on yield and yield components of hulless barley

An experiment was conducted on research farm in Gorgan University of Agricultural Sciences and Natural Resources during the crop year of 2005-2006to study the effects of planting date and density on yield and yield components of hulless barley. An experiment was carried out as factorial by using the randomized complete block design with four replications. The examined factors were included three levels of planting date in 27 NoV, 23DeC, 2Feb and density was at three levels of 200, 300 and 400 plants per square meter. The results showed that the effect of planting date on yield and yield components was significant and the number of spike per square meters and the number of grain in spike and the weight of thousand grain decreased through the delay in planting, and the number of spike per square meters increased through adding the density, ut the number of grains in spike and the weight of thousand grains decreased. Also, the yield decreased through reducing the density and delaying in planting.