Environmental effects on grain yield and malting quality parameters of winter barley

Conducted researches showed significant effect of cultivar and environment on grain yield and malting quality of barley. Barun is cultivar with the highest grain yield and very good indicators of protein and malt extract content. Vanessa had lower grain yield than cultivars Barun and Zlatko, higher protein content in grain but the best indicators of malt extract, malt viscosity and beta-glucan. Cluster analysis of malt extract content indicated grouping of locations Nova Gradiska and Pozega as well as Osijek and Tovarnik, which did not depend on year. Significant differences were found for beta glucan content between years and locations of testing, and particularly inadequate beta glucan content was found at Osijek and Nova Gradiska locations in 2005. Interactions of variety and environment may have an impact on sustainable cropping methods.