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)

The Journal is included in the list of the leading peer-reviewed scientific journals and publications, which should be published by the main results of theses for the degree of doctor and Ph.D.
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Journal is included in the list of VAK (from 25.09.2017), No. 291

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

Аграрный вестник Урала № 03 (182) 2019


Байкин Ю. Л. кандидат сельскохозяйственных наук Уральский государственный аграрный университет

Кандаков Н. В. Доктор сельскохозяйственных наук, профессор, Уральский ГАУ

Каренгина Л. Б. кандидат сельскохозяйственных наук, доцент, Уральский государственный аграрный университет



In a field experiment, they studied the effect of non-root fertilizingwith potassium humate of various concentrations on yield, chemical compositionand extraction of nutrients by oats, as well as on the agronomic andphysiological effectiveness of fertilizers. It is shown that when spraying oatplants with potassium humate at the end of tillering stage –the beginning of the release into the tube, the total biomass increases,including the grain yield. Nitrogen and potassium from fertilizers were mostefficiently consumed by plants with foliar feeding with potassium humate at aconcentration of 0.30 %, applied nitrogen was used at 92 %,and potassium at 82 %. An increase in the concentration of humate in the foliarapplication somewhat reduced fertilizer efficiency. Foliar nutrition of oatswith potassium humate increases the payment for a unit of fertilizer withgrain. The highest return on fertilizer was obtained with a humateconcentration of 0.30 % – 20.4 g/g. Theconsumption of nutrients during the creation of a unit of yield of 1g of grainwith additional feeding with a concentration of potassium humate 0.15 %:amounted to 11 g of nitrogen, 35 gof phosphorus and 20 g of potassium. With an increase in concentration, theextraction of nutrients into a unit of production decreases, which indicates amore rational use of the absorbed nutrient. The degree of utilization ofnutrients applied with fertilizers, estimated by the coefficient of absorptionefficiency (CEP), demonstrated that nitrogen and potassium from the fertilizerswere most efficiently consumed by plants with foliar top dressing withpotassium humate at a concentration of 0.30 %:potassium by 82 %.


humic acids, humates, mineral fertilizers, foliar nutrition, harvest, agronomic and physiological efficiency.


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