Productivity, yield of seed tubers and multiplication factor of potato varieties as secondary crop, depending on planting methods

UDC 635:635:1:635.2:635.21

Ostonakulov T.E., Lukova I.N.

The purpose of the research is to study new large-tuberous potato varieties during summer planting with freshly harvested tubers, depending on the cultivation methods, to identify varieties suitable for a double-crop crop and to establish optimal planting methods. Field experiments were conducted in 2019–2021 in the conditions of old-irrigated meadow soils of the Samarkand region in the experimental farm of the Samarkand branch of Tashkent State Agrarian University, located in the Akdarya district of the Samarkand region of Uzbekistan. The level of nitrogen supply in the soil is very low, phosphorus is low, and exchange potassium is average. The object of research – potato varieties: Sante (standard), Gala, Bagizagan, Sylvana, Arizona, Picasso, Saviola, Evolution, Sifra were planted with freshly harvested tubers and compared by three planting methods – 70×19 cm (traditional), 90×15 cm (wide-row) and 90+30×22 cm (two-line tape). With all planting methods, the density of standing was the same (74 thousand per 1 ha). The area of the plot with a row spacing width of 70 cm is 56 m2, at 90 cm – 72 m2, at 90+30×22 cm – 96 m2. The repetition is fourfold. Potatoes were planted whole and cut tubers weighing 30–60 g. Before planting, freshly harvested seed tubers were treated in a solution of growth stimulants at the rate of 1 ha – 100 liters of water, 1.0 kg of thiourea, 1.0 kg of potassium radon, 0.5 g of gibberellin, 2.0 g of succinic acid and 5–10 liters of Roslin with an exposure of 2–3 minutes. Cultivation of large–tuberous potato varieties in summer planting with freshly harvested tubers with two-line (90+30×22 cm) and wide-row (90×15 cm) planting methods with a density of 74 thousand pieces per ha contributes to obtaining the highest yield (30.7–39.2 t/ha). Of these, according to the yield of commercial tubers (29.8–38.7 t/ha), the yield of seed tubers (14.0–20.9 t/ha, or 45.2–54.3%) and the multiplication coefficient (3.9–5.8), varieties were allocated – Bagizagan, Sylvana, Saviola, Arizona, Evolution, Picasso.

Key words: varieties, early and two-yielding crops, planting methods, seed tuber yield, multiplication factor

Ostonakulov T.E. (the author for correspondence), D. Sci (Agr.), professor, Samarkand Science and Research Station of Scientific Research Institute of Vegetables Crops, Melons and Potatoes. E-mail:

Lukova I.M., assistant, Samarkand branch of Tashkent State Agrarian University

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For citing: Ostonakulov T.E., Lukova I.N. Productivity, yield of seed tubers and multiplication factor of potato varieties as secondary crop, depending on planting methods. Potato and vegetables. 2022. No10. Pp. 24-27. (In Russ.).

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