Effectiveness of the use of various biostimulants in increasing the productivity of squash crops

Abstract

This article examines the problem of using natural biostimulants and creating new biologically active substances, introducing them into production, and increasing medicinal properties to increase the productivity of pumpkin crops in Uzbekistan. In this case, moisturising of pumpkin and cucumber seeds in biostimulators before planting, spraying during the growing season, and mixed (seed moisturising and spraying during the growing season) methods were used. As a solution to this problem, it was determined that it is useful to study the effect of biostimulants on pumpkin crops and to improve the quality of the product, to enrich its biochemical composition and to determine its medicinal properties. Research was conducted in 2018-2020 at Gulistan State University and Andijan Institute of agriculture and agrotechnology. In the cultivation of pumpkin and cucumber, plants were treated with Gossipren, Uchqun, Uchqun plus and Verva biostimulants, and the efficiency of Uchqun plus biostimulant at different rates was determined. When 0.01% Uchqun plus biostimulant was used in a mixed method, it was determined that the productivity of Ispanskaya 73 variety of pumpkin increased by 31.5 t/ha and that of Palov kadu 268 variety increased by 31.8 t/ha. When cucumber plants were affected by this method - Orzu F1 - 35.1 t/ha and 34.5 t/ha were obtained in Navruz variety.