Influence of slow-release mineral fertilizers on the growth and development of open-ground tomatoes in the conditions of frozen soils of Yakutia

Valentina Osipova; Vasena Ustinova; Varvara Vasilyeva

doi:10.55186/25876740_2026_69_4_588

VAK Russia 4.1.1 UDC 635.64

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INFLUENCE OF SLOW-RELEASE MINERAL FERTILIZERS ON THE GROWTH AND DEVELOPMENT OF OPEN-GROUND TOMATOES IN THE CONDITIONS OF FROZEN SOILS OF YAKUTIA Influence of slow-release mineral fertilizers on the growth and development of open-ground tomatoes in the conditions of frozen soils of Yakutia

АА Аа

Published in INTERNATIONAL AGRICULTURAL JOURNAL · Issue 4 · Pages 588–590 · Rubric: Scientific support and management of agrarian and industrial complex

DOI: https://doi.org/10.55186/25876740_2026_69_4_588

Received: 28.04.2026 Accepted: 03.06.2026 Published: 15.08.2026

Authors

Valentina Osipova

ORCID

Vasena Ustinova

ORCID

Varvara Vasilyeva

Valentina Osipova

Academic degree: doctor of agricultural sciences

Science rang: docent

Arctic State Agricultural Technical University head of the department · department of agronomy · Russian Federation · Yakutsk

ORCID

Vasena Ustinova

Academic degree: candidate of agricultural sciences

Arctic State Agricultural Technical University associate professor of the department · department of agronomy · Russian Federation · Yakutsk

ORCID

Varvara Vasilyeva

Arctic State Agricultural Technical University postgraduate student · Russian Federation · Yakutsk

ABSTRACT

From 2023 to 2025, experiments were conducted in cryolithozone conditions to study the development of tomato plants under the influence of mineral fertilizers. The aim of the study was to determine the effect of slow-release mineral fertilizers on the growth and development of open-field tomatoes in Central Yakutia. The subjects of the study were the Moskvich tomato variety and the slow-release mineral fertilizers Zion, Fertika, Osmokot Hi K, and Bona Forte. The plot soil is permafrost-affected meadow-chernozem, medium loamy, with a pH of 8.4. The humus content in the upper horizon is 3-6%, total nitrogen (N) is 100 mg/kg, phosphorus (P205) is 149 mg/kg, and K20 is 500 mg/kg of soil. Tomato seedlings were planted in a 40 x 40 pattern in well-warmed soil in mid-June. Each plot contains 20 plants, systematically placed, and replicated four times. Mineral fertilizers were added to the pits during planting. The plants were watered using a drip irrigation system. It was found that the application of mineral fertilizers shortened the tomato growing season to 13 days (142 days); with insufficient heat after planting the seedlings in the ground and during stem growth (2025), the growing season increased by 14 days (156 days). Osmocote Hi-K and Bona Forte fertilizers promoted the formation of the greatest number of brushes per plant – up to 14-16, which exceeds the control (3 to 6). The greatest increase in leaf area compared to the control was achieved with the application of Osmocote Hi K fertilizer (316 cm2), exceeding the control by 105 cm2, or 150% of the control. The highest yield of juicy and tasty tomato fruits was achieved with the application of Osmocote Hi K (3.39 t/ha, or 163% of K).

KEYWORDS

mineral fertilizers, permafrost soils, yield, diseases, pests, tasting

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Osipova V. V., Ustinova V. V., Vasilyeva V. A. Influence of slow-release mineral fertilizers on the growth and development of open-ground tomatoes in the conditions of frozen soils of Yakutia // INTERNATIONAL AGRICULTURAL JOURNAL. 2026. no. 4. pp. 588-590. DOI: https://doi.org/10.55186/25876740_2026_69_4_588. (Date of access 19.09.2026).

MLA

Valentina Osipova, Ustinova V. V., Vasilyeva V. A.. "Influence of slow-release mineral fertilizers on the growth and development of open-ground tomatoes in the conditions of frozen soils of Yakutia." INTERNATIONAL AGRICULTURAL JOURNAL.4 (2026): 588-590. DOI: https://doi.org/10.55186/25876740_2026_69_4_588.

APA

Osipova V. V., Ustinova V. V., Vasilyeva V. A. (2026). Influence of slow-release mineral fertilizers on the growth and development of open-ground tomatoes in the conditions of frozen soils of Yakutia. INTERNATIONAL AGRICULTURAL JOURNAL(4), 588-590. https://doi.org/10.55186/25876740_2026_69_4_588

Chicago

Valentina Osipova, Ustinova V. V., Vasilyeva V. A.. "Influence of slow-release mineral fertilizers on the growth and development of open-ground tomatoes in the conditions of frozen soils of Yakutia." INTERNATIONAL AGRICULTURAL JOURNAL, no. 4 (2026): 588-590. https://doi.org/10.55186/25876740_2026_69_4_588.

WIKI

{{cite journal | author = Osipova V. V., Ustinova V. V., Vasilyeva V. A. | title = Influence of slow-release mineral fertilizers on the growth and development of open-ground tomatoes in the conditions of frozen soils of Yakutia | journal = INTERNATIONAL AGRICULTURAL JOURNAL | year = 2026 | issue = 4 | pages = 588-590 | doi = 10.55186/25876740_2026_69_4_588 }}

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INFLUENCE OF SLOW-RELEASE MINERAL FERTILIZERS ON THE GROWTH AND DEVELOPMENT OF OPEN-GROUND TOMATOES IN THE CONDITIONS OF FROZEN SOILS OF YAKUTIA Influence of slow-release mineral fertilizers on the growth and development of open-ground tomatoes in the conditions of frozen soils of Yakutia

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