Stimulation of the photosynthetic apparatus in buckwheat plants of different years of selection under the influence of urea innoculated by the bacterium Bacillus Subtilis Ch-13

Roman Ivanov; Aleksey Naliukhin; Sergey Belopukhov

doi:10.55186/25876740_2025_68_7_944

VAK Russia 4.1.3 UDC 633.12 UDC 631.841.7 UDC 631.86

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STIMULATION OF THE PHOTOSYNTHETIC APPARATUS IN BUCKWHEAT PLANTS OF DIFFERENT YEARS OF SELECTION UNDER THE INFLUENCE OF UREA INNOCULATED BY THE BACTERIUM BACILLUS SUBTILIS CH-13 Stimulation of the photosynthetic apparatus in buckwheat plants of different years of selection under the influence of urea innoculated by the bacterium Bacillus Subtilis Ch-13

АА Аа

Published in INTERNATIONAL AGRICULTURAL JOURNAL · Issue 7 · Pages 944–948 · Rubric: Scientific support and management of agrarian and industrial complex

DOI: https://doi.org/10.55186/25876740_2025_68_7_944

Received: 28.07.2025 Accepted: 27.08.2025 Published: 15.12.2025

Authors

Roman Ivanov

ORCID

Aleksey Naliukhin

ORCID

Sergey Belopukhov

ORCID

Roman Ivanov

Academic degree: graduate student of agricultural sciences

Russian State Agrarian University – Moscow Timiryazev Agricultural Academy postgraduate student of the department · department of agronomy, biological chemistry and radiology · Russian Federation · Moscow

ORCID

Aleksey Naliukhin

Academic degree: doctor of agricultural sciences

Science rang: docent

Russian State Agrarian University – Moscow Timiryazev Agricultural Academy head of the department · department of agronomy, biological chemistry and radiology · Russian Federation · Moscow

ORCID

Sergey Belopukhov

Academic degree: doctor of agricultural sciences

Science rang: professor

Russian State Agrarian University – Moscow Timiryazev Agricultural Academy professor · Russian Federation · Moscow

ORCID

ABSTRACT

The article presents the results of a two-year field study (2023-2024) aimed at identifying the key factors that determine the yield of buckwheat varieties Dikul and Dasha under the conditions of the use of traditional urea and urea treated with the B.s. Ch-13 crop. It has been established that the productivity of the crop depends only 50% on the degree of development of the photosynthetic apparatus, estimated through the ratio Σ ChL/carote (the sum of chlorophylls a and b to carotenoids). The aim of the study was to assess the effect of urea inoculated with the Bacillus subtilis Ch-13 strain on the activation of the photosynthetic apparatus in buckwheat plants of different breeding years, as well as to identify the dependence of stimulation efficiency on the physiological characteristics of varieties due to their breeding history. For the Dikul variety, exceeding the dose (N90) leads to a decrease in grain yield (2023: 13.7 c/ha; 2024: 12.5 c/ha) and an increase in straw (2023: 61.0 c/ha; 2024: 59.3 c/ha), which is associated with an imbalance of Σ ChL/Karot (>13) and the redistribution of assimilates into the vegetative mass. For the Dasha variety, modified nitrogen (N60m) increases yields by 8–10% compared to conventional N60, probably due to improved photosynthetic activity (Σ ChL/Karot ~10–11).

KEYWORDS

buckwheat, chlorophyll a, chlorophyll b, urea, B.s. Ch-13, photosynthesis, leaf area

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Ivanov R. G., Naliukhin A. N., Belopukhov S. L. Stimulation of the photosynthetic apparatus in buckwheat plants of different years of selection under the influence of urea innoculated by the bacterium Bacillus Subtilis Ch-13 // INTERNATIONAL AGRICULTURAL JOURNAL. 2025. no. 7. pp. 944-948. DOI: https://doi.org/10.55186/25876740_2025_68_7_944. (Date of access 09.10.2026).

MLA

Roman Ivanov, Naliukhin A. N., Belopukhov S. L.. "Stimulation of the photosynthetic apparatus in buckwheat plants of different years of selection under the influence of urea innoculated by the bacterium Bacillus Subtilis Ch-13." INTERNATIONAL AGRICULTURAL JOURNAL.7 (2025): 944-948. DOI: https://doi.org/10.55186/25876740_2025_68_7_944.

APA

Ivanov R. G., Naliukhin A. N., Belopukhov S. L. (2025). Stimulation of the photosynthetic apparatus in buckwheat plants of different years of selection under the influence of urea innoculated by the bacterium Bacillus Subtilis Ch-13. INTERNATIONAL AGRICULTURAL JOURNAL(7), 944-948. https://doi.org/10.55186/25876740_2025_68_7_944

Chicago

Roman Ivanov, Naliukhin A. N., Belopukhov S. L.. "Stimulation of the photosynthetic apparatus in buckwheat plants of different years of selection under the influence of urea innoculated by the bacterium Bacillus Subtilis Ch-13." INTERNATIONAL AGRICULTURAL JOURNAL, no. 7 (2025): 944-948. https://doi.org/10.55186/25876740_2025_68_7_944.

WIKI

{{cite journal | author = Ivanov R. G., Naliukhin A. N., Belopukhov S. L. | title = Stimulation of the photosynthetic apparatus in buckwheat plants of different years of selection under the influence of urea innoculated by the bacterium Bacillus Subtilis Ch-13 | journal = INTERNATIONAL AGRICULTURAL JOURNAL | year = 2025 | issue = 7 | pages = 944-948 | doi = 10.55186/25876740_2025_68_7_944 }}

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