Quality of Malting Barley Variety Emon, Cultivated under Reduced Mineral Fertilization in Different Environmental Conditions

Velichka Koteva, Marina Marcheva

Abstract: The complex influence of the mineral fertilization and the environmental conditions of Bulgaria (soil fertility and climate) on the malting quality of cultivar Emon has been investigated. Database from 11-years field trial conducted on Pellic Vertisol in Institute of Agriculture – Karnobat has been analyzed. In the experimental seven crops rotation cycle malting barley comes after sunflower and sunflower – peas’ mixture. It has been fertilized with intensive and reduced fertilizing rates 16–12–8–0 kg/da N; 10–5–0–0 kg/da Р2О5 and 6–3–0–0 kg/da K2О correspondingly. The influence of mineral fertilization, soil fertility and climate condition on the gain yield, 1000 kernel weight and absolute mass, grain uniformity, content of crude protein and extract has been analyzed. Despite the genetic potential of variety plasticity and constant yield the quality parameters vary in years with different moisture reserve and temperatures, and available N, P2O5, K2O and annually imported mineral fertilizers in the soil. It has been proved specific rates of fertilization norms, soil fertility and climate for maximal realization of the genetic potential of variety Emon for yield and grain malting quality.

Keywords: environmental conditions; malting barley; mineral fertilization; quality

Date published: 2017-07-06