THE EFFECT OF HUMIC FERTILIZERS ON THE WATER REGIME OF CUCUMBER IN PROTECTED SOIL CONDITIONS

Arslanova Rumiya A.  -  Ph. D. (Agriculture), Head of the Department, Astrakhan State University, 20a Tatishcheva Str., Astrakhan, 414056, Russian Federation, arslanova@mail.ru

Babakova Anna S.  -  Ph. D. (Agriculture), Associate Professor, Astrakhan State University, 20a Tatishcheva Str., Astrakhan, 414056, Russian Federation, antyannettka@mail.ru

Dubin Rinat I.  -  Ph. D. (Agriculture), acting Head Department of Agricultural Technologies and Veterinary Medicine, Astrakhan State University, 20a Tatishcheva Str., Astrakhan, 414056, Russian Federation, r.dubin@mail.ru

Shlyakhov Viktor А.  -  D. Sc. (Agriculture), Head, the branch of the Federal State Budgetary Institution "Rosselkhozsentr" in the Astrakhan region, 9, 5-ya Kotelnaya Str., Astrakhan, 414000, Russian Federation ,

The article presents the results of studies on the effect of humic fertilizers on the physiological processes of cucumber. The aim of the research was to study the effect of biological preparations Humat +7 and Gumi 20M on the water regime of cucumber in protected soil conditions. Studies have been conducted on the effect of biological products on the water content in plant leaves, water retention capacity, the effect on the intensity of the daily course of transpiration and water deficiency. The research results showed that the use of root fertilization during the growing season ensured the maintenance of water and nutrient regimes in the most important phases of growth and development of cucumber plants. The hydration of leaf tissues increased in the initial period of vegetation, reaching a maximum in the budding phase – the beginning of flowering and continued until mass fruiting. Under the action of humic fertilizers, the daily course of transpiration of hybrids in the hottest time was maintained at the level of normal water consumption by plant leaves, maintaining the water balance during the day, as a result of which the formation of the number of fruits and the increase in weight increased.

Key words: protected soil, humic fertilizers, water regime, hybrid, transpiration, water deficiency, photosynthesis, budding, mass flowering, yield