NEW DOMESTIC TOMATO VARIETIES BREEDED BY FEDERAL RESEARCH CENTER OF VEGECULTURE IN IRRIGATED CONDITIONS OF DAGESTAN

The research was conducted in 2022-2024 in order to study new domestic tomato varieties (Solanum Lycopersicum L.) of the Federal State Budgetary Scientific and Scientific Institution of the Russian Academy of Natural Sciences and a comprehensive assessment of economically valuable indicators in the irrigated conditions of the Republic of Dagestan. The work was carried out at the base in the Tersko-Sulak sub-province of the Federal State Budgetary Budgetary Institution of the FANC RD Babayurt district. According to the maturation periods, the samples belong to the very early ones: Severyanka, Blagodatny, Magnat, Voskhod VNIISSOKa, Viking (from shoots to maturation 90-105 days), early: Commonwealth (106-111 days) and mid-early: Torch (110-115 days). The yield of tomato varieties varied on average over 3 years from 45.2 to 84.8 t/ha. On average, for 3 years, a significant increase in the previous harvest was provided by the varieties Blagodatny, Voskhod VNIISSOKa, Severyanka, Magnat (42.3-31.5 t/ha). The marketability of fruits ranges from 78 to 92% on average. The weight of the fruit varies depending on the variety from 75.6 to 125 g on average over 3 years with HCR05 = 11. The fruit index ranged on average from 0.5 to 1.3. The dry matter content varied depending on the year from 4.2 to 6.8%. According to the average data for 3 years and the average values for 2 years, the varieties Blagodatny and Voskhod VNIISSOKa were distinguished by the highest dry matter content. The total sugar content ranged from 3.01 to 3.42%. The vitamin C content of the studied varieties is based on the average for 2023-2024. It was 24.24-44.93 mg%. All varieties have a high vitamin C content, regardless of the year. The profitability analysis showed that growing tomatoes using root dressing in open ground conditions is an economically sound technique, since the profitability levels were 150 and 180%, respectively.

Republic of Dagestan, tomato, interphase periods, yield, fruit weight, marketability, dry matter, sugars, vitamin C, organic acids