Published in Scientific Papers. Series A. Agronomy, Vol. LXVI, Issue 1
Written by Tatyana BOZHANSKA, Мagdalena PETKOVA, Biser BOZHANSKI, Minko ILIEV
The aim of the study was to determine the amount of crude protein yield and the yield of feed units in the fodder biomass of six variants of two-component legume-grass mixtures (Lotus corniculatus - Festuca rubra; Trifolium repens - Lolium perenne; Trifolium repens - Poa pratensis; Trifolium pretense - Phleum pretense; Medicago sativa - Dactylis glomerata; Trifolium pretense - Festuca pratensis) that would provide high-quality fodder in the conditions of the Central Balkan Mountain. The highest crude protein yield is for the mixtures Tr. pratense L. + F. pratensis L. and Tr. repens L. + P. pratensis L. The legume crop predominated in the regrowths of both variants during the entire experimental period from 7.4% to 48.4%, respectively, and the ratio of legume:grass in the mixed grass stands was 47.7:40.3% (Tr. pratense L. - F. pratensis L.) and 62.3:13.9% (Tr. repens L.- P. pratensis L.). A proven difference in crude protein yield was found between Tr. repens L. - P. pratensis L. and M. sativa L. - D. glomerata L. mixtures. The highest yield of feed units for milk and growth was found in the forage mixture of Tr. pratense L. with Ph. pratense L.
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