Published in Scientific Papers. Series A. Agronomy, Vol. LIX
Written by Nicoleta AXINTI, Maria CONTOMAN, Gabriela Alina CIOROMELE
Knowing the contribution of genotype and environmental conditions (soil conditions and weather conditions), and especially the contribution of interactions between these factors in achieving quantitative phenotypic traits, is of particular importance for finding the most valuable varieties of barley that can be grown in a certain geographic area. The quality requirements for beer barley are quite strict and directly related to the efficiency of processing and the quality of the product obtained in the industry of malt and beer. Many of the quality traits needed for beer barley are controlled manufacturer, but others are determined by the weather during growing and harvest period. The research was conducted to determine the quality of studied spring barley varieties, compared to the quality standards in the beer industry. The experiments were conducted during 2008 - 2010 in the Vădeni area, Braila County, on four varieties of spring barley (Thuringia, Annabell, Cristalia and Tunika). To determine the quality of barley the following physical indicators were analyzed - the mass of 1000 grains (MMB g), the hectoliter mass (MH kg/hl), assortment (%), chemical indicators - humidity (%), protein content (% d.m.), starch content (% d.m.), and biological indicators - energy and germination capacity (%).The analysis of the quality indices of spring barley varieties in the conditions of Vădeni area highlights the value of these varieties for the production of malt for beer. Following the laboratory tests, we obtained the following results: the mass of 1000 grains (MMB) ranged from 39.06 g for the Cristalia variety in 2009 and 43.50 g for the variety Tunika in 2010; the hectoliter mass (MH) ranged from 57.9 kg / hl for the Cristalia variety and 64.6 kg/hl for the Annabell variety in 2008; assortment ranged from 85.52% in 2009 for the Cristalia variety and 91.63% for the Tunika variety in 2008; humidity ranged from 12.55% for the Cristalia variety in 2009 and 14.9% for the Thuringia variety in 2010, protein content ranged from 9.75% for the Annabell variety in 2010 and 11.15% for the Cristalia variety 2008; starch content ranged from 56.5% in 2009 for the Cristalia variety and 61.75% in 2010 for the Tunika variety; the germination capacity was between 95% for the Cristalia variety and the 98% for the Thuringia variety. Despite the climatic conditions during the experimental period, the four spring barley varieties were found to match the quality requirements of the brewing industry.
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