IMPACT OF BIOSTIMULANT TREATMENTS ON LEAF DEVELOPMENT IN VARIOUS SOYBEAN CULTIVARS

Abstract

This article presents data on the effects of applying the biostimulants “Uz Gumin” and “Fitovak” as well as the biopreparation “Yer Malhami” on the formation of leaf number in soybean plants of the “Nafis” (local) and “Vilana” (foreign) cultivars. Treatments were applied before sowing and during the budding, flowering, and pod formation stages. Field experiment results revealed that each biostimulant had a different level of impact on leaf organ formation. Notably, the application of “Yer Malhami” resulted in the formation of 36.7 leaves in the “Nafis” cultivar and 36.6 leaves in the “Vilana” cultivar during the pod formation stage, exceeding the control by 4.1 and 5.7 leaves, respectively. The application of  “Fitovak” during all three growth stages also demonstrated high effectiveness, significantly increasing the number of leaves.