Dynamics of soil carbon status at the early stage of barley plant growth under the influence of soil bioactivation agents.
https://doi.org/10.26897/0021-342X-2023-5-5-17
Abstract
Under the conditions of a 24-day model experiment on soil samples of ordinary chernozem (Corg=3.6%, pH=7.4), the effect of biopreparations on the biological activity and on the dynamics of the content of two forms of soil organic matter (Chwl and Corg) was evaluated. Based on the results of theeffectof the used biopreparations on the intensity of substrate-induced soil respiration, they can be classified as means of biological activation of soil. The biological activity of the soil increased in the Rizoplan-Sporex-Bisolbi-Trichosan-Baktofit series when the biopreparations were applied to the soil before sowing, varying in the range of 57–156.7 µl CO2/h/g of soil, while the indicator in the reference variant was 28.6 µl CO2/h /g soil. The bioactivation agents show a pronounced ability to destroy soil organic matter, which is expressed in a reduction of the gross carbon content. The fraction of organic carbon extracted by hot water is negatively correlated with plant biomass (r = –0.845), which may indicate the involvement of this fraction in the direct formation of biomassat the early stage of barley plant development. At the same time, the carbon of the microbial biomass is characterized by a weak correlation with the plant biomass (r=0.298) in the period studied.
About the Authors
A. Kh. Zanilov
Institute of Agriculture – a branch of the Kabardino-Balkarian Scientific Center of the Russian Academy of Sciences; Kabardino-Balkarian State University named after Kh.M. Berbekov
Russian Federation
Russian Federation
Amiran Kh. Zanilov, CSc (Ag), Senior Research Associate, Head of the Center for Decarbonization of the Agro-Industrial Complex and Regional Economy
173, Chernyshevskogo Str., Nalchik, 360004, KBR
224, Kirova Str., Nalchik, 360004, KBR
M. A. Aznaeva
Kabardino-Balkarian State University named after Kh.M. Berbekov
Russian Federation
Russian Federation
Milana A. Aznaeva, Laboratory Assistant-Researcher, Center for Decarbonization of the Agro-Industrial Complex and Regional Economy
173, Chernyshevskogo Str., Nalchik, 360004, KBR
D. G. Dudarova
Kabardino-Balkarian State University named after Kh.M. Berbekov
Russian Federation
Russian Federation
Dinara G. Dudarova, Laboratory Assistant-Researcher, Center for Decarbonization of the Agro-Industrial Complex and Regional Economy
173, Chernyshevskogo Str., Nalchik, 360004, KBR
A. M. Leshkenov
Institute of Agriculture – a branch of the Kabardino-Balkarian Scientific Center of the Russian Academy of Sciences
Russian Federation
Russian Federation
Aslan M. Leshkenov, Research Associate, Head of the Laboratory of Agrochemistry and Soil Research
224, Kirova Str., Nalchik, 360004, KBR
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Review
For citations:
Zanilov A.Kh., Aznaeva M.A., Dudarova D.G., Leshkenov A.M. Dynamics of soil carbon status at the early stage of barley plant growth under the influence of soil bioactivation agents. IZVESTIYA OF TIMIRYAZEV AGRICULTURAL ACADEMY. 2023;(5):5-17. (In Russ.) https://doi.org/10.26897/0021-342X-2023-5-5-17
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