The efficiency of sunflower cultivation on different Levels of biologization

Abstract

The article presents experimental materials on the assessment of economic, bio-energy and ecological efficiency of the elements of the levels of technology biologization for sunflower cultivation. The study was dedicated to evaluation of the following cultivation technology elements: sunflower hybrid (factor A); the level of biologization of cultivation technology (factor B). All the elements of biologization of the cultivation technology for sunflower hybrids resulted in significant improvement of basic indexes of economic efficiency. The analysis of the indexes makes it possible to state that, by Factor A, the highest economic attractiveness is characteristic of the variants of an extensive (minimum) cultivation technology, in which the level of profitability during the years of the research was 160.1% on average, and organic technology -159.9%, respectively. If the manufacturer is certified and a batch of commercial sunflower has organic status, it is possible to increase this index to 211.9%, taking into account 20% organic bonus. The highest energy efficiency in the experiment was characteristic of the variants without the use of the most energy-intensive components - mineral fertilizers. The variants of biologized I and organic technologies ensured the value of this index at the level of 4.76 and 5.73, respectively. Analysis of the environmental suitability of the crop hybrids that formed the gradation of factor A of the experiment allows drawing a conclusion that the advantage of the hybrid PR64F66 F1 in the main indexes reflects its ecological tolerance, and primarily in the plasticity bi (1.06 compared to 0.96 for the variant of the hybrid Tunca F1) and stability Sdi2 (0.00091 vs. 0.00077, respectively).