of the Urals

Russian Journal of Agricultural Research

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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 № 10 (128) 2014


Сурин И. В аспирант Уральский государственный аграрный университет

Мингалев С. К. доктор сельскохозяйственных наук, профессор, заведующий кафедрой растениеводства Уральский государственный аграрный университет

Овсянников Ю. А. Доктор сельскохозяйственных наук, доцент, Уральский государственный экономический университет

Овсянников А.Ю. соискатель Ботанический сад Уральского отделения Российской академии наук


Influence of the level of mineral nutrition on chlorophyll fluorescence of maize

The results of studies on the effect level of mineral nutrition on chlorophyll fluorescence of maize. Observations made in the laboratory on cut plants in the most intensive phase of growth and in the ejection phase panicles. Registration of the fluorescence was carried out on July third bottom and third from the top August leaves. Statistical analysis shows that the despite the small difference between the options of mineral fertilizers in the conditions of the experiment significantly increased photosynthetic activity of maize chlorophyll. Special attention should be paid to the formation of organic matter and crop formation. Data on the productivity of maize were at different levels of mineral nutrition given. Thus there was a significant increase in productivity of corn. Gathering her dry matter increased by 43 %, while the yield of green mass by 24 %. Higher rate of growth of dry matter were explained by the fact that when the fertilizer was a significant increase in dry matter content in the green mass of corn. Comparison of data on the effect of mineral nutrition on the activity rate of chlorophyll and productivity of maize shows that the level of increase maize yields in fertilizer significantly higher than the increase in photosynthetic activity of chlorophyll. There is speculation that it could occur in the following circumstances: fertilizers have little influence on the process of photosynthesis, which cause the appearance of the fluorescence effect, but may increase the efficiency of the photosynthetic system at later stages; fertilizers have little influence on the process of photosynthesis, which cause the appearance of the fluorescence effect, but significantly change the direction of the products of photosynthesis by plants. Increasing productivity is the result of redistribution of the products of photosynthesis in favor of the above-ground mass.


maize, chlorophyll, photosynthesis, fluorescence, mineral fertilizers


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