TY - JOUR AU - V. Limar AU - A. Limar PY - 2022/01/25 Y2 - 2024/03/28 TI - BIOLOGIZED TECHNOLOGY OF WATERMELON CULTIVATION UNDER DRIP IRRIGATION JF - Vegetable and Melon Growing JA - VMG VL - 0 IS - 70 SE - Articles DO - 10.32717/0131-0062-2021-70-36-44 UR - https://vegetables-journal.com/index.php/journal/article/view/316 AB - The aim of the research. Develop agronomic measures to improve the fertility of southern low-humus sandy chernozem and improve the technology of growing watermelon under drip irrigation. Methods. Field – crop determination, biometric accounting and measurements; laboratory – analysis of fruit quality, content of mineral nutrients in the soil; economic-mathematical – assessment of economic efficiency of the studied elements and technology in general; mathematical and statistical – conducting analysis of variance and statistical processing of experimental results. Results. According to the research results, the best soil cover crop was selected – winter rye, which outperforms other crops in terms of: actual intake of dry organic matter into the soil, which is 1.6 times more than white mustard and 2.7 times more than the sowing age; the highest biological activity of the soil, which when applied ½ from the recommended dose of fertilizers and the use of Biogran amounted to 94.9 mg CO2 / m2 × h; the lowest density of soil composition before sowing in the 0 - 10 cm horizon – 1.24 g / cm3, while in the control – 1.26 g / cm3; - positive effect on the thermal regime of the soil during the period of obtaining watermelon seedlings - earning in the soil and mulching between rows with plant mass increases the soil temperature at a depth of 10 cm by 4.2ºC, compared with control; watermelon yield – 40.6 t / ha, obtained by applying the recommended dose of mineral fertilizers and pre-sowing inoculation of watermelon seeds with Biogran, which is 8.1 t / ha higher than in the control; on the indicator of the intensity of energy accumulation in the system «soil – plant» with the help of soil cover culture, as a transformer of FAR energy into organic matter and indicators of economic efficiency. Conclusions. The processes that determine the nutrient status, biological activity of the soil, the potential fertility of the soil in terms of energy stored in the system «soil – plant» using soil cover culture as a transformer of FAR energy into organic matter and the best soil cover culture for binary growing. ER -