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Estimation of the biological efficiency of prospective dominant strains of bacteria in the rhizosphere of spring barley

Journal: Scientific reports of NULES of Ukraine (Vol.1, No. 89)

Publication Date:

Authors : ;

Page : 1-1

Keywords : Phyllobacterium ifriqiyense 1; Bacillus methylotrophicus 10; inoculation; biometric indicators; spring barley; floratest;

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An important task of modern agricultural production is the creation of new environmentally friendly agricultural technologies aimed at increasing the productivity of crops. Spring barley is an important forage crop, which occupies a significant place in the balance of concentrated feed. Therefore, our study is quite relevant today, given the trend towards the transition to organic farming and the development of biological fertilizers. The aim of the study was to determine the efficiency of inoculation with dominant strains of rhizosphere bacteria Phyllobacterium ifriqiyense 1 and Bacillus methylotrophicus 10 seeds of spring barley and physiological parameters of growth and development of the culture in model conditions. The task of the study is to determine the titer of viable bacteria, exposure of spring barley seeds in bacterial suspension, accounting for the growth of spring barley plants and fixing its biometric parameters after bacterization; determination of physiological parameters of plant growth and development in model conditions. Research methods – microbiological (direct calculation of viable colony-forming units using Goryaev's camera). Indicators of photosynthetic activity of the leaf were determined using the biophysical method of induction of chlorophyll fluorescence by a portable device "Floratest". The results of studies – the strain Phyllobacterium ifriqiyense 1 showed the maximum biological effect on the growth of test culture of barley (including dilution of culture fluid). It was found that treatment with bacterial suspensions of Phyllobacterium ifriqiyense 1 and Bacillus methylotrophicus 10 promotes the activation of the functions of the photosynthetic apparatus of barley plants in the laboratory. Prospects – rhizosphere microorganisms are important components of the environment in the early stages of ontogeny of cereals, so the use of dominant inoculating bacteria has scientific and practical significance in the optimization of agricultural production technologies.

Last modified: 2021-03-19 23:12:52