INFLUENCE OF SOIL TREATMENT AND MEASUREMENTS OF WEED CONTROL FOR FORMING GRAIN PRODUCTIVITY OF SUGAR SORGHUM IN A LEFT-BANK FOREST-STEPPE
Journal Title: Наукові доповіді НУБіП України - Year 2018, Vol 1, Issue 1
Abstract
Changes in climatic conditions prompted the study of the possibility of expanding the range of cultivating sugar sorghum. Therefore, the purpose of our research was to identify the peculiarities of the growth, development and formation of grain productivity of Sudanese sorghum and sugar sorghum depending on the basic cultivation of the soil and protection of plants from weeds in the conditions of the Left-Bank Forest-steppe. In the process of research systems of basic soil cultivation were studied: generally accepted system – including soil scuffling, plowing and field leveling, and minimal system – where the plowing operation was missed. We also studied methods of weeds controlling: chemical – seed treatment with antidote Concept III 960 EC, application of soil herbicide before sowing Prymextra Gold 720 SC – 3-3,5 l/ha, mechanized – row spacing and combined – application of chemical protection and inter-row cultivation . It was found that on chernozem typical Left-bank Forest-steppe plowing for basic soil cultivation creates better conditions for the development of the root system, plant resistance to adverse abiotic factors, and intensive growth of the plant top. Application of chemical protection of plants provides an increase in grain yield of 8-24%, inter-row cultivation – 24-33%. Combined employment of these elements of technology were increased the yield on 29-41%. The generally accepted soil cultivation system is overcome a minimal cultivation system on yield of grain on 2-9%. Conventional soil cultivation system and combined plant protection from weeds the most effective combination. For the period of ripeness the agrocoenosis of the sorghum were characterized by a plant height of 272-276 cm, a density of 185-159 pcs/m2, and a leafiness of 24-28%. The yield of grain of Sudan sorghum is 5.09 t/ha, fodder units – 5.9 t/ha, digestible protein – 0.49 t/ha, output of exchange energy – 56.7 GJ/ha. The same parameters of sugar sorghum were 5, 42, 6.29, 0.53 t/ha and 60.3 GJ/ha accordingly.
Authors and Affiliations
S. M. Slyusar
Keywords
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