Purpose: to study the impact of integrated reclamation (chemical reclamation against the background of subsoiling and leaching) on increasing the yield of soybeans and rice cultivated in rice irrigation systems and to calculate the economic efficiency of their application.
Materials and methods. The study was conducted in 2023–2025 in rice paddies of the Central Irrigated Zone of the Rostov Region. Soil samples were analyzed in the environmental analytical laboratory of the Russian Scientific Research Institute of Land Improvement Problems using standard methods. To study the effect of changes in the soil condition of rice paddies, the yield of soybeans was measured in the first year after the effect of complex reclamation and that of rice in the second year. The soybean variety SK Optima and rice variety Boyarin were sown. The fertilization, soil cultivation and irrigation regime of the cultivated crops were carried out according to zonal farming systems.
Results. Soybean yield increases in non-saline soils ranged from 81 to 235 %, and rice yields increased by 18 to 62 %. The ameliorant application to highly gypsum-rich soils (over 20 %) did not significantly increase soybean or rice yields. The most cost-effective approaches for integrated reclamation were those using phosphogypsum and steel etching electrolyte separately.
Conclusions. Profits from integrated reclamation were observed in all experimental options for soybean and rice cultivation. The payback period for all study options was one year. In highly gypsum-rich soils, integrated reclamation is economically ineffective due to high capital costs and insignificant increases in soybean and rice yields.
integrated reclamation, rice irrigation systems, soil fertility, soil degradation, economic efficiency
Babenko A. A. Economic efficiency of integrated soil reclamation in rice irrigation systems. Ways of Increasing the Efficiency of Irrigated Agriculture. 2026;98(1):290–305. (In Russ.).
1. Babichev A.N., Babenko A.A., 2022. Vliyanie razlichnykh tipov i vidov melioratsii na vosstanovlenie i povyshenie plodorodiya degradirovannykh pochv [The effect of various kinds and types of irrigation on restoration and increase of fertility of degraded soils]. Melioratsiya i gidrotekhnika [Land Reclamation and Hydraulic Engineering], vol. 12, no. 1, pp. 157-176. DOI: 10.31774/2712-9357-2022-12-1-157-176, EDN: INKOLR. (In Russian).
2. Babichev A.N., Babenko A.A., 2023. Vliyanie melioratsii pochv na ikh plodorodie [The effect of soil reclamation on their fertility]. Innovatsionnye tekhnologii v APK: teoriya i praktika: sb. st. IX Mezhdunarodnoy nauchno-prakticheskoy konferentsii [Innovative Technologies in the Agro-Industrial Complex: Theory and Practice: Collect. of Art. of the IX International Scientific and Practical Conference]. Penza, PGAU, pp. 9-12, EDN: HVENOE. (In Russian).
3. Bogachev I.V., Rostovskaya oblast'. Khozyaystvo. Sel'skoe khozyaystvo [Rostov Region. Economy. Agriculture]. URL: https://bigenc.ru/c/rostovskaia-oblast-khoziaistvo-sel-skoe-khoziaistvo-02930a?ysclid=lzgl2go1vv468993157 [accessed 18.07.2024]. (In Russian).
4. Babenko A.A., Babichev A.N., 2025. Vliyanie khimicheskoy melioratsii i agrotekhnicheskikh priemov na khimicheskie svoystva i produktivnost' pochv risovykh chekov [The influence of chemical reclamation and agronomic methods on the chemical properties and productivity of rice check soils]. Izvestiya Nizhnevolzhskogo agrouniversitetskogo kompleksa: Nauka i vysshee professional'noe obrazovanie [Proceedings of Lower Volga Agro-University Complex: Science and Higher Education], no. 2(80), pp. 208-221, DOI: 10.32786/2071-9485-2025-02-23, EDN: APROYH. (In Russian).
5. Amanbaeva B.Sh., Bekbaev R.K., Dzhaysambekova R.A., 2017. Kompleksnaya melioratsiya degradirovannykh oroshaemykh zemel' yuga Kazakhstana [Integrated reclamation of degraded irrigated lands in the south of Kazakhstan]. Nauka i mir [Science and the World], vol. 1, no. 11(51), pp. 56-59. (In Russian).
6. Zaidelman F.R., 2014. Degradatsiya meliorirovannykh pochv Rossii i sopredel'nykh stran v rezul'tate izmeneniya ikh vodnogo rezhima i sposoby zashchity [Degradation of Ameliorated Soils in Russia and Adjacent Countries as Resulted from Changes in Their Water Regime]. Voronezh, Kvarta Publ., 269 p., ISBN: 978-5-89609-338-1, EDN: UDTSQD. (In Russian).
7. Isakov V.Yu., Iminchev R.A., 2023. Vodno-fizicheskie svoystva gipsonosnykh pochv Yuzhnoy Fergany [Water-physical properties of gypsum-bearing soils of Southern Fergana]. Actual Issues of Agricultural Development Problems and Solutions: International Scientific-Practical Conf., Фергана, pp. 748-753. (In Russian).
8. Pravalie R., 2021. Exploring the multiple land degradation pathways across the planet. Earth-Science Reviews, vol. 220, article number: 103689, DOI: 10.1016/j.earscirev.2021.103689, EDN: HZKKCY.
9. Lu X., Zhang Y., Lin C., Wu F., 2021. Evolutionary overview and prediction of themes in the field of land degradation. Land, vol. 10, iss. 3, pp. 1-23, DOI: 10.3390/land 10030241, EDN: XZZWFO.
10. Kulikova E.V., Gorbunova N.S., Kulikov Yu.A., 2023. Vliyanie melioratsii fosfo-gipsom na ekologicheskoe sostoyanie chernozemov Kamennoy stepi [Effect of reclamation with phosphogypsum on the ecological status of chernozem soils of the Kamennaya Steppe]. Vestnik Voronezhsko-go gosudarstvennogo agrarnogo universiteta [Bulletin of Voronezh State Agrarian University], vol. 16, no. 2(77), pp. 81-89, DOI: 10.53914/issn2071-2243_2023_2_81, EDN: HXIJXK. (In Russian).
11. Ibragimov S.K., Dzhamalova R.Kh., Mustafayev M.G., 2023. Deystvie organomineral'nogo melioranta pri promyvkakh na ozdorovlenie solontsevatykh pochv Azerbaydzhana [The effect of organomineral ameliorant on the improvement of solonetzic soils of Azerbaijan]. Melioratsiya i gidrotekhnika [Land Reclamation and Hydraulic Engineering], vol. 13, no. 1, pp. 73-86, DOI: 10.31774/2712-9357-2023-13-1-73-86, EDN: FFLYPW. (In Russian).
12. Mikheev N.V., Tripolev D.P., 2021. Glubokoe rykhlenie pochv – osnova ikh plodorodiya i produktivnosti [Deep loosening of soils is the basis of their fertility and productivity]. Melioratsiya kak drayver modernizatsii APK v usloviyakh izmeneniya klimata: materialy II Mezhdunar. nauchno-prakticheskoy internet-konferentsii [Land Reclamation as a Driver of Agro-Industrial Complex Modernization in the Context of Climate Change: Proceed. of the II International Scientific and Practical Online Conference], Novocherkassk, pp. 17-22, EDN: RCARJP. (In Russian).
13. Sharma S. [et al.], 2022. Tillage, green manure and residue retention improves aggregate-associated phosphorus fractions under rice-wheat cropping. Scientific Reports, no. 12(1), article number: 7167.
14. Boudiar R. [et al.], 2022. Influence of Tillage and Cropping Systems on Soil Properties and Crop Performance under Semi-Arid Conditions. Sustainability, vol. 14, no. 18, article number: 11651, DOI: 10.3390/su141811651, EDN: VYGUQN.
15. Li S. [et al.], 2022. Potential Application of Alternate Tillage (AT). Soil Systems, no. 6(70), DOI: 10.3390/soilsystems6030070, EDN: XHQSAI.
16. Alsamin B., [et al.], 2022. Integrating Tillage and Mulching Practices as an Avenue to Promote Soil Water Storage, Growth, Production, and Water Productivity of Wheat under Deficit Irrigation in Arid Countries. Agronomy, vol. 12, no. 1, DOI: 10.3390/agronomy12092235, EDN: INAKCS.
17. Panov V.D., Lurye P.M., Larionov Yu.A., 2006. Klimat Rostovskoy Oblasti: vchera, segodnya, zavtra: monografiya [Climate of the Rostov Region: Yesterday, Today, Tomorrow: Monograph]. Rostov n/D, OOO “Donskoy Izdatel'skiy Dom”, 488 p., EDN: XBQEMX. (In Russian).
18. Khrustalev Yu.P. [et al.], 2002. Klimat i agroklimaticheskie resursy Rostovskoy oblasti [Climate and Agroclimatic Resources of Rostov Region]. Rostov n/D, Bat. kn. Publ., 184 p. (In Russian).
19. Shchedrin V.N., Balakai G.T., Dokuchaeva L.M., Yurkova R.E., Shalashova O.Yu., Tabala G.I., 2017. Rukovodstvo po kontrolyu i regulirovaniyu pochvennogo plodorodiya oroshaemykh zemel' [Guide to Monitoring and Regulation of Soil Fertility of Irrigated Lands]. Novocherkassk, RosNIIPM, 137 p. (In Russian).
20. Klimenko A.I., [et al.], 2022. Zonal'ne sistemy zemledeliya Rostovskoy oblasti na 2022–2026 gody [Zonal Farming Systems of Rostov region for 2022–2026]. Rostov n/D., 736 p., EDN: GHQGWS.
21. Dokuchaeva L.M., Yurkova R.E., Shalashova O.Yu., 2012. Ispol'zovanie fosfogipsa i fosfogipsosoderzhashchikh meliorantov dlya melioratsii solontsovykh pochv v usloviyakh orosheniya [Use of phosphogypsum and phosphogypsum-containing ameliorants for reclamation of alkaline soils under irrigation]. Nauchnyy zhurnal Rossiyskogo NII problem melioratsii [Scientific Journal of the Russian Scientific Research Institute of Land Improvement Problems], no. 3(07), pp. 52-64, EDN: PCYQBB.
