Agrarian
Bulletin
of the Urals

Russian Journal of Agricultural Research

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Registration certificate: PI number 77-12831 on May 31, 2002
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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 № 01 (180) 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:635.21:631.445.4

INFLUENCE OF THE TIMING AND DEPTH OF PLANTING ON POTATO PRODUCTIVITY AND QUALITY

Theeffect of the planting period and the depth of seed placement on the yield andquality of potato tubers has been studied. During the period of research, thepotato yield was mainly dependent on the level of mineral nutrition (factorcontribution – 58.7 %), varieties (10.5 %), density (20.0 %) andplanting time (7.5 %). The depth of embedding of the seed material had asignificant but significantly less effect (0.5 %). The content of drymatter and starch in tubers was determined by the planting period (63.2 and50.5 %, respectively), nutritional status (20.5 and 33.4 %) andgenotype (5.1 and 9.3 %), to a lesser extent depended on the depth oflanding (0.8 and 2.1 %). The accumulation of nitrates in potato tubersdepended on the planting period (57.7 %), variety (17.4 %), nutritionlevel (12.4 %) and planting density (2.8 %). The optimalagro-technical potato planting period was established – the second decade ofMay. Landing in the third decade of May reduced the content of dry matter intubers (“Rosara” – on average by 1.7 %, “Kuzovok” by 1.3 %) andstarch (“Rosara” by 1.60 %, “Kuzovok” by 1.26 %), while theaccumulation of nitrates increased by 1.26 and 1.52 times, respectively. Thelate planting (June 5–12) led to a decrease in potato yields (“Rosary” – 11.3 %,“Kuzovok” – 15.1 %), and dry matter content in tubers (by 2.7 and 2.9 %)and starch (at 1.87 and 2.11 %, respectively) compared with the plantingon May 12–15. In contrast, the content of nitrates in tubers, on the contrary,increased by 2.05 and 2.19 times. The optimum depth of seeding of seed tubersdepended on the planting period. When planting potatoes in the second decade ofMay, the tubers had a significant advantage at a depth of 5–6 cm, and whenplanting late May and early June – at a depth of 10–12 cm.


Keywords:

potatoes, planting time, planting depth, productivity, quality of tubers, dry matter, starch, nitrates.


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