THE IMPACT OF MINERAL FERTILIZERS ON COTTON YIELD AND TOTAL WATER CONSUMPTION IN THE LOWER DON REGION

Authors:Nedotsukova Julia I., Babichev Alexandr N.

633.511:631.82
Theme: The role of land reclamation and water management in ensuring the sustainable development of agriculture
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Annotation

Purpose: to determine the impact of mineral fertilizer rates on cotton yield and total water consumption in the Lower Don region.

Materials and methods. The studies of the effect of mineral fertilizer rates on water consumption and yield were conducted on a site located in the Oktyabrsky district Rostov region in 2022–2023. Cotton variety PGSSKh 1 was sown in wide rows at a density of 100 thousand/ha. Four variants with the mineral fertilizer application at rates calculated for the planned cotton yield were studied– 10.0; 20.0; 30.0 and 40.0 c/ha, and a variant without fertilizers (control).

Results. Depending on the mineral fertilizer rate (MF), the total water consumption indicators varied from 3920.2 to 3997.3 m³/ha in 2022 and from 5480.3 to 5506.4 m³/ha in 2023.

Conclusions. Studies have shown that when using mineral fertilizers calculated for the planned yield of 30.0 and 40.0 c/ha, the largest amount of raw cotton was obtained – 7.2 and 7.5 c/ha in 2022, and 5.3 and 14.24 c/ha in 2023, respectively. The maximum total water consumption figures for options three and four in 2022 were 3976.8 and 3997.3 m³/ha, and in 2023 – 5501.5 and 5506.4 m³/ha, respectively. The water consumption coefficient for options three and four in 2022 was 552.3 and 533 m³/centner, and in 2023 – 359.6 and 339.1 m³/centner, respectively.

Keywords

cotton, mineral fertilizers, total water consumption, irrigation rate, yield

For quoting

Nedotsukova Ju. I., Babichev A. N. The impact of mineral fertilizers on cotton yield and total water consumption in the Lower Don Region. Ways of Increasing the Efficiency of Irrigated Agriculture. 2026;98(1):327–337. (In Russ.).

Authors

Ju. I. Nedotsukova – Junior Researcher, Postgraduate Student, Russian Scientific Research Institute of Land Improvement Problems, Novocherkassk, Russian Federation, nedotsukova@yandex.ru, Author ID: 1041428, ORCID: 0000-0002-8221-949X;

A. N. Babichev – Leading Researcher, Doctor of Agricultural Sciences, Russian Scientific Research Institute of Land Improvement Problems, Novocherkassk, Russian Federation, babichevan2006@yandex.ru, Author ID: 195832, ORCID: 0000-0003-1146-7530.

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