Abstract
The research was conducted in the irrigated stationary crop rotation of FSBEI «Omsk agricultural research center» in the southern forest-steppe of Western Siberia. The aim of the research was to determine the bioenergetic efficiency of agricultural technology of seed peas, feed beans and soybeans on irrigated lands. The experiments studied influence of various conditions of mineral nutrition and inoculation of seeds with rhizotorphin on seed productivity of seed peas, feed beans and soybeans under irrigation. It was established that when cultivating peas, phosphorus (in action and aftereffect) increased energy cost per 1 ha from 14.10 to 17.23 GJ or 22%, the introduction of nitrogen fertilizers and microelements against increased phosphorus content – up to 17.14 GJ or 22%, and the pre – sowing introduction of mineral nitrogen, phosphorus and microelements against an increased content of P2O5-up to 20.26 GJ or 44%. At the same time, the increase in seed productivity of the crop provided an increase in gross energy in these variants by 39, 50 and 52%, respectively. It is shown that the improvement of conditions of mineral nutrition of beans provided an increase in energy from 31.32 to 44.84-47.66 GJ/ha or by 43-52%; soybeans-from 14.21 to 20.09-21.03 GJ / ha or by 41-48%. A weak effect of seed inoculation on the yield of various varieties of peas, beans and soybeans, and, as a result, on changes in bioenergetic efficiency indicators, was found. Of all the studied pea varieties, it is worth noting the varieties aksaysky usatyi 55, whose energy coefficient was at the level of 3.03, Yamalsky-2.92 and Blagovest – 2.49. The energy coefficient of various soybean varieties selected by the Omsk ASC was about 2.55-2.87. Feed beans surpassed peas and soybeans in this indicator – 3.55-3.77. Due to high seed productivity, beans have the lowest energy consumption per 1 ton of seeds-about 4.83 GJ.
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