UDC 635.64:631.52:631.6:631.8
https://doi.org/10.25630/PAV.2025.90.18.003
Ostonakulov T.E., Adilov M.M., Saidova G.A.
The article presents the results of a study of the selected adaptive varieties and hybrids of tomato, under various irrigation regimes and fertilizer rates. The purpose of the research is to study the growth, development, bush formation, productivity, yield by harvests and fruit quality of the selected adaptive tomato varieties and hybrids under various irrigation regimes and fertilizer rates in conditions of slightly saline meadow-alluvial soils of the Bukhara region. Field experiments were carried out in conditions of irrigated meadow-alluvial soils of medium loamy mechanical composition of the farm «Khamroev Khalil Bozorovich» of the Jandarsky district of the Bukhara region. The soils of the experimental site are characterized by a humus content of 0.94-1.12 and 0.71-0.78; total nitrogen - 0.094-0.099 and 0.082-0.085; phosphorus - 0.13-0.19 and 0.10-0.12; potassium - 2.38-2.41 and 2.22-2.27%, mobile phosphorus - 12.4-12.8 and 9.3-9.9; exchangeable potassium - 204-211 and 185-190 mg/kg, reaction in an aqueous extract pH = 7.4-7.6, the degree of salinity is weakly chloride-sulfate (0.189- 0.195% chloride ion). The parameters of irrigation regimes, plant growth and formation of leaf surface, photosynthetic activity, amount of chlorophyll in leaves, net productivity of photosynthesis, productivity of tops, roots and bushes, yield, biochemical composition of the crop and economic efficiency of tomato cultivation were determined. It was revealed that the combined use of organomineral fertilizers at the rate of 20 t/ha of manure + N200P160K100 kg/ha with an irrigation regime of 75-85-85% of the maximum permissible yield ensured the production of a highly stable (48.6-88.1 t/ha) crop with good biochemical composition and quality. At the same time, the yield per 1 m3 of irrigation water is the highest (5.7-9.7 kg) or the lowest water consumption per 1 centner of yield (10.2-17.5 m3), which provided additional net income per hectare in the amount of 8.4-9.1 million soums and profitability of 6.6-13.6%.
Key words: tomato varieties and hybrids, salinization, irrigation regime, fertilizer rates, yield, marketable yield, yield, irrigation water consumption
Ostonakulov Т.Е., D.Sci. (Agr.), professor of Karshi State University and Samarkand Scientific Experimental Station of the Research Institute of Vegetables, Melons and Potatoes. E-mail: t-ostonokulov@mail.ru E-mail: t-ostonokulov@mail.ru
Adilov M.M., D.Sci. (Agr.), professor of Tashkent State Agrarian University. E-mail: m.m.adilov@mail.ru
Saidova G.A., doctoral student of the Research Institute of Vegetables, Melons and Potatoes
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For citing: Ostonakulov T.E., Adilov M.M., Saidova G.A. Irrigation regime and fertilizer rates of adaptive tomato varieties and hybrids in conditions of slightly saline soils of the Bukhara region. Potato and vegetables. 2025. No4. Pp. 25-29. https://doi.org/10.25630/PAV.2025.90.18.003 (In Russ.).
