Spring barley varieties - yield and quality in ecological agriculture
2002
Petr, J. | Leibl, M. (Ceska Zemedelska Univ., Prague-Suchdol (Czech Republic). Agronomicka Fakulta) | Psota, V. | Langer, I.
Evaluation of malting quality of spring barley varieties from ecological and conventional (intensive) growing confirmed that most of indicators of malting quality are decisively affected by weather pattern in experimental year (i.e. pattern of temperature and precipitation). In majority of quality traits was manifested stronger effect of weather than nitrogen fertilization or growing system. Significant differences among years were recorded in the content of nitrogen substances, in relative extract, Kolbach index, diastatic power and degree of fermentation. The growing system was displayed most in the content of beta-glucans where its content was surprisingly low in ecological growing. The effect of growing system was partly proved also in Kolbach index and friability. It has been confirmed that ecological growing brought better malting quality of barley than conventional system. It was proved convincingly by the so-called indicator of malting quality that was higher by 1.3 points in ecological growing than in conventional system.
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