Agrarian
Bulletin
of the Urals

Russian Journal of Agricultural Research

The publication is registered by the Ministry of the Russian Federation
for Affairs of the Press, Television and Radio Broadcasting and Mass Communication Media.
Registration certificate: PI number 77-12831 on May 31, 2002
Subscription index in catalog «Russian Press» - 16356
ISSN 1997 - 4868 (Print)

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ISSN 2307-0005 (Online)
Key title: Agrarnyj vestnik Urala (Online)
Abbreviated key title: Agrar. vestn. Urala (Online)

Аграрный вестник Урала № 07 (186) 2019

Агротехнологии

Васильев А. А. доктор сельскохозяйственных наук, ученый секретарь Уральский федеральный аграрный научно-исследовательский центр УрО РАН

Горбунов А. К. научный сотрудник, заведующий лабораторией элитного семеноводства картофеля, Уральский федеральный аграрный научно-исследовательский центр УрО РАН

УДК:635.21:631.5

The impact of agricultural techniques on seed productivity of potatoes in the conditions of the Southern Urals

The influence of various methods of potato farming on seed productivity of theearly variety “Rozara” and middle-aged variety “Kuzovok” was studied. During the study period, this indicator mainly depended on the density of planting (the contribution of the factor – 67.1 %), the level of mineral nutrition (20.4%) and the genotype (7.2 %). In the wet conditions of 2015 (SCC = 1.60), the influence of the seed embedment depth (17.3 %) increased, in the arid 2016 (SCC= 0.93) the nutrition level (41.0 %) increased, and in a fairly wet 2017 (SCC =1.44) – varieties (30.8 %) and planting dates (8.1 %). The optimal combination ofagricultural methods was established, which provides the highest harvest oftubers of seed fraction per unit area – thickened planting (75×19 cm) on theincreased background of mineral nutrition: for the variety “Kuzovok” – June 5–12 to a depth of 10–12 cm (404 ths. pcs/ha), and for the variety “Rozara” – May 25–29 to a depth of 5–6 cm (378 ths. pcs/ha) and 10–12 cm (383 ths.pcs/ha). The thickening of the plantings from 49 to 70 thousand tubers per 1 haincreased the seed productivity of the “Rozara” variety on average by 36.7 %,“Kuzovok” – by 25.8 %. The increase in the mineral level was accompanied by anincrease in this indicator in the “Rozara” variety by 21.4–30.8 %, and thevariety “Kuzovok” – by 18.9–30.3 % compared to the control (without fertilizers). An early planting (May 5) led to a decrease in the collection oftubers from the seed fraction per hectare of “Rozara” variety, on average, by 41.1 % compared with planting in the second decade of May, by 49.2 % compared with planting at the end of May, and in “Kuzovok” – by 14.1 and 26.0 %,respectively. Deep embedding of planting material contributed to a significant increase in seed productivity of potatoes during the late planting season ofthe “Rozara” variety – by 3.8%, “Kuzovok” – by 10.1 %.


Keywords:

potato, seed productivity, nutrition level, planting time, planting density, landing depth


References:

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