Abstract
RelevanceThe relevance of the bioenergy assessment follows from the requirements of modern production: energy saving per unit of output.MethodsThe article presents the data of bioenergy evaluation of the use of table predecessors, types of fertilizers and growth regulators in the technology of watermelon cultivation.ResultsThe results of studies have shown that from the energy point of view, the proposed methods of cultivation of watermelon, are effective, because the coefficient of energy efficiency in all the studied variants is more than one. Studies have revealed the advantage of a layer of perennial grasses as a precursor to watermelon: CEE – 2.55 at its values according to the predecessor of winter rye – 1.70. The use of mineral fertilizers dose N60P90K60 in rain conditions leads to a significant increase in energy consumption of commercial products, 1.7 times more in the formation of perennial grasses and 1.3 times more than the predecessor of winter rye. A decrease in the CEE and an increase in the cost of total energy and energy intensity of 1 ton of products using manure 27 t / ha in relation to mineral fertilizers. Comparative energy analysis showed high efficiency of using water-soluble fertilizers and growth regulators for soaking seeds and processing of vegetating plants in watermelon cultivation. The use of these agricultural practices can reduce the energy costs of total energy by 70-79% compared with the introduction of mineral fertilizers dose N60P90K60, with an increase in the energy efficiency coefficient from 1.54 to 2.68-2.77. As shown by calculations from the energy point of view, the best was the reception of cultivation of watermelon table using for seed soaking and processing plants in vegetation water-soluble fertilizer master special with the addition of growth regulator megapol, the value of the EPS was amounted to 2.99, which is 7.9% and 11.5% more in comparison with potassium Humate and Ribav-extra, respectively.
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