UDC 635.21:631.543.2
https://doi.org/10.25630/PAV.2021.99.87.003
Shabanov A.E., Kiselev A.I.
Experiments were carried out in 2018-2020 on a new early potato variety Gulliver in Russian Potato Research Centre. In the experiment, we studied different agrotechnical techniques, including the time, density of planting and methods of applying mineral fertilizers. Tubers were planted in 2 terms: early (3rd decade of April at a soil temperature of not less than 5 °C) and basic (control) - 7-10 days after the first term. Planting was carried out on background of fertilizers applied locally in three ways while preparing of ridges and subsequent inter-row treatments with two strings: the main N90P90K135 (control); fractional (starting N60P60K90 + top dressing N30P30K45 7-10 days after germination); starting N30P30K45 + top dressing N30P30K45 7-10 days after germination + top dressing N30P30K45 in the budding phase. Planting density: 44; 50 and 56 thousand tubers/ha according to the scheme 75×30; 75×27 and 75×24 cm. Early planting accelerated the emergence of seedlings by 5-6, and the phases of budding and flowering of plants by 3-7 days. The weight of the tops, the area of leaves assimilation surface increased by 2.0 t/ha and 3.6 thousand m2/ha. The period of plants vegetation and tubers accumulation was extended by 8-10 days in comparison with control. The yield increase from early planting reached an average of 1.7 t/ha or 4.0% in 3 years, and from fractional appliance of fertilizers to 2.1 t/ha or 5.0% in comparison with corresponding controls. The combined use of agricultural methods in experiment allowed to obtain a yield increase of 3.6 t/ha or 8.5%. Conditional income amounted to 46 thousand rubles / ha, and the cost price – 3.4 rubles/kg, which is 0.2 rubles/kg less than in the control. The quality indicators were almost the same. Thickening of plantings to 50 and 56 thousand tubers/ha contributed to an increase of yield by an average of 2.9-3.1 t/ha or up to 7.3%, compared with the control. Conditional income increased on these options on average to 9 thousand rubles/ha.
Key words: yield, term, planting density, application method, tuber quality indicators, conditional income
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For citing: Shabanov A.E., Kiselev A.I. A new potato variety Gulliver in the Central Russia. Potato and vegetables. 2021. No1. Pp. 30-33. https://doi.org/10.25630/PAV.2021.99.87.003 (In Russ.).
