R. Petrov1,2*, Y. Andonova1, D. Yarkov2, A. Dicheva1 1Green Balkans – Stara Zagora NGO, Stara planina str. 9, 6000 Stara Zagora, Bulgaria 2Department of General Livestock Breeding, Faculty of Veterinary Medicine, Trakia University, Student’s campus, 6000 Stara Zagora, Bulgaria (

S. Enchev*, G. Kikindonov Agricultural Institute, 9700 Shumen, Bulgaria Abstract. The production of grain sorghum has increased in recent years. The modern varieties are hybrids with high productivity potential appropriate for application of intensive forage grain production technolog