Agriculture and forestry

Korshevnyuk Serhiy – graduate student of the Department of Agriculture, Soil Science and Agrochemistry of VNAU (21008, Vinnytsia, 3 Sonyachna Street, 0975640178).

The article highlights the results of the study of the peculiarities of the formation of the symbiotic apparatus and the symbiotic potential of Linza lentils depending on the use of inoculation, treatment of seeds with trace elements and the use of a system of foliar feeding. The peculiarities of the formation of the symbiotic apparatus of lentils are considered in view of its biological features and technological aspects of cultivation. It was determined that both the maximum number of nodules and their raw weight had a maximum formation at the phenological phase of bean formation in the variant of a complex combination of inoculation, seed treatment and two foliar feedings in the amount of 40.8 pcs./plant and 324.7 mg/plant, respectively. For the same option, the maximum indicators of active nodules of 35.9 pcs./plant (at 86.46% share of active nodules) and 276.3 mg/plant were determined, respectively. At the same time, the average share of influence in the dispersion system for the formation of indicators was, respectively, for the annual variance of conditions 22.51% and 16.39%, for inoculation 55.0% and 61.03%, for seed treatment with trace elements 4.34% and 8 .33%, for the use of foliar fertilization 14.52% and 16.3%. It was established that the maximum average value of both ZSP and ASP in the interphase period of bean formation-reach is 3.69 g days/plant and 2.30 g days/plant, and the minimum for the interphase period of stemming-budding is 0.38 and 0.33 g day/plant, respectively. The minimum value of both ZSP and ASP was noted in the variant without the application of additional measures to optimize the nutrition of lentils with an average value in the section of the calculated interphase periods at the level of 0.82 and 0.37 g days/plant, respectively, and the minimum - in the variant of the complex application of factors of the experiment - 3.62 and 3.04 g day/plant or in hectare expression 9.18 thousand kg day/ha and 6.92 thousand kg day/ha, respectively.

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