Genotype variations in grain yield of spring barley depending on sowing density

A three-year study was carried out for grain yield in five cultivars of the spring brewer's barley at the Small Grains Research Center of in Kragujevac from 1996 to 1998. The effect of three sowing densities on the number of spikes, grain number per spike and grain yield was studied for each cultivars. Research results have shown that the cultivars displayed a highly significant effect on the grain number per spike and grain yield. It has also been noticed that, in the course of every research year, sowing density induced increases in spike number and grain yield. In contrast, the higher sowing density brought about a decrease in the grain number per spike.