The aim of the field and laboratory trials was to study at the location Gorenja Brezovica-Šentjernej Dolenjska (Rep.Slovenija) in 1980 and 1981 the yield and income due to different quality of four catch-crop mixtures: A-spring vetches (Vicia sativa L.) and oats (Avena sativa L.), B- spring vetches (Vicia sativa L.) and barley (Hordeum vulgare L.), C-fodder peas (Pisum arvense L.) and maize (Zea mays L.), D- fodder peas (Pisum arvense L.), oats (Avena sativa L.) and spring vetches (Vicia sativa L.). Each of the included mixtures was sown in 3 different densities. Fresh yield was established in the field and dry matter yield after drying at 105 °C. The dry matter means for each entry were as follows: A-5,09, B-5,77, C-7,13 and D-4,72 t/ha. The yields of crude proteins established on the results of Weend-analysis (Neumann 1976) were as follows: A-855,5, B-1001,5, C-1273,6, D-901,5 kg/ha. Starch unit yields were as follows: A-1,87 , B-2,16, C-2,78 and D-1,61 t/ha. Ash content in % of DM yield was as follows: A-9,42, B-7,80, C-6,50 and D-7,89%. Digestibility of the organic matter in vitro according to the Tilley & Terry method (1963) attained the following values: A-59,99, B-64,83, C-62,95, D-60,13%. Digestible organic matter yield were: A-2,96 t, B-3,26, C-4,21 and D-2,58 t/ha. The total yield of essential fally acids according to the method of Di Gorcia in mmlol/g of sample has been: A-6,50, B-4,58, C-2,76, D-5,62. Acetic acid share in total essential fatty acids ranged from 56,1 (D) to 61,5 (C), propionic acid from 22,2 (C) to 27,2 (A), and of butryc acid from 7,0 (A, C) to 8,6 (D).

catch crop mixtures; lagumes and cereals; yield of green masse; quality of dry matter; digestibility of dry matter; volatile fatty acids

Published by University of Zagreb, Faculty of Agriculture, Zagreb, CROATIA
Sponsored by Ministry Science and Education of the Republic of Croatia