Effect of primary tillage on soil fertility indicators and productivity of sunflower hybrids under insufficient moisture conditions in the Lower Don region

Irina Avdeenko; Roman Kamenev

doi:10.55186/25876740_2026_69_5_724

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EFFECT OF PRIMARY TILLAGE ON SOIL FERTILITY INDICATORS AND PRODUCTIVITY OF SUNFLOWER HYBRIDS UNDER INSUFFICIENT MOISTURE CONDITIONS IN THE LOWER DON REGION Effect of primary tillage on soil fertility indicators and productivity of sunflower hybrids under insufficient moisture conditions in the Lower Don region

АА Аа

Published in INTERNATIONAL AGRICULTURAL JOURNAL · Issue 5, 2026 · Pages 724–727 · Rubric: Scientific support and management of agrarian and industrial complex

DOI: https://doi.org/10.55186/25876740_2026_69_5_724

Received: 13.07.2026 Accepted: 26.08.2026 Published: 15.09.2026

Authors

Irina Avdeenko

ORCID

Roman Kamenev

ORCID

Irina Avdeenko

Don State Agrarian University postgraduate student of the department · department of agriculture and technology of storage of crop products · Russian Federation · Persianovskij

ORCID

Roman Kamenev

Academic degree: doctor of agricultural sciences

Science rang: professor

Don State Agrarian University professor of the department · department of agrochemistry and ecology named after professor E.V. Agafonov · Russian Federation · Persianovskij

ORCID

ABSTRACT

Sunflower is the main oilseed crop in the Rostov Region. Since the sown area under this crop is limited to no more than 15% of arable land, the study of primary tillage methods is of particular relevance. The aim of this research was to evaluate the effect of primary tillage on soil condition, yield structure components, and final yield of sunflower hybrids. The study was conducted from 2021 to 2023 under conditions of unstable moisture supply in the Lower Don region (Azov zone of the Rostov Region). The experiment was a two-factor design: Factor A (primary tillage method) included two treatments – control: minimum tillage to a depth of 10-12 cm; and moldboard plowing to a depth of 23-25 cm. Factor B comprised sunflower hybrids Tristan, Samurai KL, and Immi. Sowing, observations, recordings, and data analysis were performed according to standard agronomic methodologies. Compared to minimum tillage, moldboard plowing provided an increase in the main yield structure components of sunflower: head diameter by 8.9%, number of achenes per head by 3.5%, 1000-achene weight by 3.9%, and achene weight per head by 5.29%, which consistently resulted in a yield increase of 0.19 t/ha (+8.0%). The hybrid Immi showed the highest responsiveness to tillage method, whereas the hybrid Samurai KL exhibited high plasticity and stability of productivity components. The obtained data can be used to improve sunflower cultivation technology. When growing sunflower hybrids in the zone of unstable moisture in the Lower Don region, in order to increase yield, moldboard plowing to a depth of 23–25 cm should be carried out after winter wheat.

KEYWORDS

moldboard tillage, minimum tillage, yield structure, sunflower hybrids, crop yield

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GOST

Avdeenko I. A., Kamenev R. A. Effect of primary tillage on soil fertility indicators and productivity of sunflower hybrids under insufficient moisture conditions in the Lower Don region // INTERNATIONAL AGRICULTURAL JOURNAL. 2026. no. 5. pp. 724-727. DOI: https://doi.org/10.55186/25876740_2026_69_5_724. (Date of access 22.10.2026).

MLA

Irina Avdeenko, Kamenev R. A.. "Effect of primary tillage on soil fertility indicators and productivity of sunflower hybrids under insufficient moisture conditions in the Lower Don region." INTERNATIONAL AGRICULTURAL JOURNAL.5 (2026): 724-727. DOI: https://doi.org/10.55186/25876740_2026_69_5_724.

APA

Avdeenko I. A., Kamenev R. A. (2026). Effect of primary tillage on soil fertility indicators and productivity of sunflower hybrids under insufficient moisture conditions in the Lower Don region. INTERNATIONAL AGRICULTURAL JOURNAL(5), 724-727. https://doi.org/10.55186/25876740_2026_69_5_724

Chicago

Irina Avdeenko, Kamenev R. A.. "Effect of primary tillage on soil fertility indicators and productivity of sunflower hybrids under insufficient moisture conditions in the Lower Don region." INTERNATIONAL AGRICULTURAL JOURNAL, no. 5 (2026): 724-727. https://doi.org/10.55186/25876740_2026_69_5_724.

WIKI

{{cite journal | author = Avdeenko I. A., Kamenev R. A. | title = Effect of primary tillage on soil fertility indicators and productivity of sunflower hybrids under insufficient moisture conditions in the Lower Don region | journal = INTERNATIONAL AGRICULTURAL JOURNAL | year = 2026 | issue = 5 | pages = 724-727 | doi = 10.55186/25876740_2026_69_5_724 }}

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