Open AccessApplication of nitrogen-fixing and phosphate-mobilizing bacteria to improve the growth-promoting effect of liquid biohumus
Author(s) -
Z. M. Aleschenkova,
P.V. Rybaltovskaya,
I. N. Ananyeva
Publication year - 2020
Publication title -
proceedings of v international scientific conference “current state, problems and prospects of the development of agrarian science”
Language(s) - English
Resource type - Conference proceedings
DOI - 10.33952/2542-0720-2020-5-9-10-102
Subject(s) - phosphate , nitrogen , pseudomonas fluorescens , bacteria , dry weight , chemistry , liquid nitrogen , horticulture , microorganism , botany , food science , biology , biochemistry , organic chemistry , genetics
The goal of the work was to study the effect of introducing nitrogenfixing and phosphate-mobilizing bacteria into liquid biohumus on its growth-promoting properties. The group of ammonifying microorganisms dominates in the structure of microbocenosis of liquid biohumus, constituting 98.46 %. The introduction of nitrogenfixing bacterial strains B. aryabhattai Cp-1 and phosphate-mobilizing Ps. Fluorescens Pr-2 at 10 % concentration in 1 % liquid biohumus (initial pH 9.5) changes pH to 7.8. Winter wheat seed treatment with liquid biohumus enriched with Ps. Fluorescens Pr-2 increases length and dry weight of seedlings by 40.0 and 80.2%; with B. aryabhattai Ср-1 – by 16.3 and 2.0% compared to the control (1% liquid biohumus). Application of liquid biohumus enriched with pseudomonades and bacilli for the treatment of cress-lettuce seeds provides increase of length and crude weight of seedlings by 25.7 and 20.0; 5.0 and 10.0%, respectively.