Agriculture and forestry

Vdovenko Serhiy Anatoliyovych – Doctor of Agricultural Sciences, Professor of the Department of Forestry, Horticulture and Viticulture of Vinnytsia National Agrarian University (21008, Vinnytsia, 3 Sonyachna Street) e-mail: sloi@i.ua

Poltoretskyi Serhii − Doctor of Agricultural Sciences, Professor of Department of Crop, Uman National University of Horticulture, Ukraine (20305 Uman, st. Institutskaya, poltorec@gmail.com)

Polishchuk Mihaylo Ivanovych – сandidate of Agricultural Sciences, Associate Professor, the chief of Agriculture, Soil Science and Agrochemistry chair of Vinnytsia National Agrarian University (21, 008, Vinnytsya, 3, Solnychna St., e-mail: polishchuk.mikhaylo@ukr.net).

Verheles Pavlo Mykolayovych – Candidate of Agricultural Sciences, Associate Professor of the department of botany, genetics and plant protection, Vinnytsia National Agrarian University (21008, Vinnytsia, Soniachna Str. 3, e-mail: pasha425@vsau.vin.ua).

The article presents the results of studies of the influence of technological methods of cultivation on the processes of growth and development of seed potato plants. The highest rates of linear growth of plant height were noted in the variant where the growth regulator Emistim C was applied against the background of fertilizer N46P46K46, both during the treatment of tubers and in the germination phase, as well as two foliar fertilizing in the budding phase and after flowering with Micro-Mineralis microfertilizer. At the same time, the height of plants was 79.2 and 75.0 cm, which is 9.2 and 8.2 cm higher than in the control variant, the number of tubers was 8.5 and 6.5 pcs, the number of stems per plant was 4.8 and 4.5 pcs, the leaf surface area was 22.7 and 22.0 thousand m2/ha. The weight of potato tubers, as well as marketability depended on the intensification of technological methods of cultivation. The highest mass of planting tubers, as well as their marketability, was noted in the variant where the growth regulator Emistim C was applied against the background of fertilizer N46P46K46, both during the processing of tubers and the germination phase, as well as two foliar fertilizing in the budding phase and after flowering with Micro-Mineralis microfertilizer - 84.5 and 75.5 g, which is 4.0 g higher than the control variant, as well as marketability of 90 and 74%, which is 6 and 4.5% higher than the control variant, respectively, in varieties Bellarosa and Opillya. Potato yields primarily depended on varietal characteristics. The highest potato yield was noted in the Bellarosa variety - 29.9 t/ha, compared to the Opillya variety - 19.5 t/ha. The use of growth regulator Emistim C in the treatment of potato tubers on the background of fertilizer N46P46K46 increased the level of yield to 30.3 and 19.5 t/ha, with the combined treatment of tubers and in the phase of germination with the growth regulator Emistim C, the yield of potatoes was 30.7 and 20.2 t/ha, respectively. The highest level of productivity was noted in the variant where the growth regulator Emistim C was applied against the background of fertilizer N46P46K46, both in the treatment of tubers and in the germination phase, as well as two foliar fertilizing in the budding phase and after flowering with Micro-Mineralis microfertilizer - 33.0 and 22.9 t/ha, which is higher than in the control variant by 3.1 and 3.4 t/ha, respectively.

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