Gryniv S. An improvement of the basic agrotechnical approaches of growing of modern sugar beet hybrids on the left-bank of the Forest-Steppe zone of Ukraine

According to the survey results of 2005 - 2007, the thesis highlights the issues of the reaction of modern sugar beet hybrids to the agro-technical growing approaches and clarifies the parameters of their influence on the productivity and technological indexes of beet- root quality. It is examined the influence of fertilizer application norms as well as plant population and time of beet-root harvesting which cause the formation of high level productive roots and of high technological qualities. It is established, that along with the agro-technical approaches of cultivation that influence on the yield and technological quality of beet-roots the varietal (biological) characteristics of the hybrids are also very important. In this paper it is made the comparative analysis of productivity of the following hybrids: Bilitserkivsky ChS 57, Ivanivs'ko-Veselopodilsky ChS 84 and Vorskla depending on agro-technical factors. Due to the complex agro-economic and bioenergetic assessment of the influence of agro-technical factors during the sugar beet cultivation it was established the most effective and the most optimal: plant population, fertilizer application norm, time of sugar beet harvesting under the conditions of the left-bank of the Forest-Steppe zone of Ukraine. There are given the results of the application of the complex of agro-technical factors while growing the sugar beet hybrids Bilotserkivsky ChS 57, Ivanivs'ko-Veselopodilsky ChS 84.