COMPARATIVE ASSESSMENT OF OATS AND MIXED SOWINGS WITH PEA AND VETCH
Under conditions of forest-steppe zone of Pre-Baikal area single-crop sowing of oats and mixed sowings of grain-fodder crops with grain legumes were studied. The article presented botanical composition, productivity and economic efficiency of annual forage crops in mixed sowings. It has been stated that vetch plants provided high content of green mass among legumes in a total yield. Competitive ability of vetch in case of cultivation in mixed sowings was higher than that of pea. Also, according to the results of investigations there was an assessment of productivity and quality, both of single-crop sowing of oats, and two- and multi-component mixtures. The results of studies have revealed that two- and three-component mixed sowings with vetch formed the highest yields of vegetative mass. The harvest of feed units from sowings oats + vetch and oats + barley + vetch exceeded single-crop sowing of oats at 1.3 times, аnd the harvest of digestible protein - at1.6 times. Economic efficiency of cultivated mixed sowings was determined. It has been proved that in comparison to single-crop sowing of oats and mixtures of cereals with pea, two- and three-component mixed sowings with vetch are more productive. The highest yields of green mass - 20.0 t/hа - were provided by the sowing oats with vetch, аnd the highest content of digestible protein - 109.6 g. in 1 f. un. - was in the mixture barley with vetch. The highest profitability - 150.4 % - was given by three-component mixture oats + barley + vetch. The mixed sowing oats + pea failed to give an expected result, on all values of economic efficiency it took the lowest point. Four- and five-component mixtures in comparative assessment of efficiency took intermediate point.