PRODUCTIVITY AND QUALITY OF OATS YIELD AND MIXED SOWINGS ON SILAGE AND HAYLAGE
The paper is concerned with the peculiarities of photosynthetic activity, crop yield and crop quality. It gives bioenergetics estimation of oats and mixed sowings on irrigated farm field in the dry steppe zone of the Buryat Republic. The authors observed reducing of average leaf square from 26.0-31.5 thousands sq m/ha in the milk stage to 23.8-28.2 thousands sq m/ha in the milky ripeness whereas photosynthetic parameters increased from the 1st harvest time (1.56-1.89) to the 2nd one (1.82-2.21 mln sq m/ha · days). Parameters of oats and mixture of oats are higher regardless the harvest time. The author speaks about productivity of pea and oats mixture productivity, which is 2.65-2.70 lower than other variants (3.15-3.37 g/sq m a day). Oats and mixture of oats and pea appeared to be mostly productive for herbage; they were 19.5 and 20.3 tone/hа in the 1st harvest time and 15.1-15.8 tones/ha in the 2nd harvest time. Crop yield of bone dry solids increased from the 1st harvest time (5.08-5.45) to the 2nd one (5.62-6.24 tones/hа). Digestible protein yield and feeding protein units are increased from 0.28-0.45 and 2.68-4.42 to 0.36-0.48 and 3.36-4.57 tone/hа), but mixtures of pea and oats or barley are dominating. The researchers observe the most productive crops, which are mixture of pea and oats on silage and haylage and mixture of oats and barley on haylage. The number of energy protein units is increased from the 1st harvest time (65.27-85.42) to the second one 67.60-88.46); it is rather higher in the pea mixtures. The paper specifies reducing of 1 tone energy output ratio from 355-449 to 350-428 MJ.