THE INFLUENCE OF MINERAL AND ORGANIC FERTILIZERS ON CORN DEVELOPMENT AND YIELD UNDER DRIP IRRIGATION IN THE ROSTOV REGION

Authors:Tishchenko Yana S., Monastyrskiy Valeriy A.

633.15:631.8:631.674.6
Theme: The role of land reclamation and water management in ensuring the sustainable development of agriculture
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Purpose: to study the influence of mineral and organic fertilizers on the development and yield of corn under drip irrigation in the Rostov region.

Materials and Methods. The studies were conducted in Oktyabrsky district, Rostov region in 2023–2025. The object of the study was the Zernogradsky 354 MV corn hybrid (mid-season). The experimental design included four options: option 1 – N₂₄₀P₁₂₀K₁₇₀ (control); option 2 – N₁₉₀P₁₀₀K₁₂₀ + 10 t/ha of cattle manure + 15 t/ha of green mass of green manure; option 3 – N₁₉₀P₁₀₀K₁₂₀ + 20 t/ha of cattle manure; option 4 – N₁₉₀P₁₀₀K₁₂₀ + 30 t/ha of green mass of green manure. In all experimental variants, the application rate of mineral and organic fertilizers was calculated for the targeted yield of 10 t/ha of corn grain. Drip irrigation was used. In the period from seedling emergence to the formation of the 9th leaf, the soil moisture level was maintained at least 70 % of the potential capacity in the 0.3 m soil layer. After the emergence of the 9th leaf and until milky-wax maturity (MW), the soil moisture was maintained at least 80 % of the potential capacity in the 0.4 m layer.

Results. It was found that by the milky-wax maturity phase, the plant height reached 215.4 cm. At the panicle stage, in the second variant, the greatest ear length was recorded – 21.6 cm, the weight of kernels per ear was 200.0 g, the weight of 1000 kernels was 331.7, and the grain yield was 76.9 %.

Conclusions. The organic fertilizer application in combination with mineral fertilizers improved the grain structure of corn, increasing cob length, kernel weight, and the number of kernels per cob. It was found that a combination of mineral fertilizers at a rate of N₁₉₀P₁₀₀K₁₂₀, 10 t/ha of cattle manure, and 15 t/ha of green manure resulted in a maximum grain corn yield of 13.3 tons per hectare.

Keywords

grain corn, yield, mineral and organic fertilizers, drip irrigation, hybrid

For quoting

Tishchenko Ya. S., Monastyrskiy V. A. The influence of mineral and organic fertilizers on corn development and yield under drip irrigation in the Rostov region. Ways of Increasing the Efficiency of Irrigated Agriculture. 2026;98(1):212–223. (In Russ.).

Authors

Yа. S. Tishchenko – Junior Researcher, Postgraduate Student, Russian Scientific Research Institute of Land Improvement Problems, Novocherkassk, Russian Federation, ageeva.yana21@gmail.com, Author ID: 1203423, ORCID: 0009-0002-9138-5083;

V. A. Monastyrskiy – Leading Researcher, Candidate of Agricultural Sciences, Russian Scientific Research Institute of Land Improvement Problems, Novocherkassk, Russian Federation, valerijmonastyrskij@yandex.ru, Author ID: 626723, ORCID: 0000-0002-0881-4282.

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