Lab tests on efficiency of a biological fertilizer based on nitrogen-fixing and phosphate-mobilizing bacteria

Soil microbiota has a direct impact on soil fertility and composition and, as a consequence, on plant productivity. Currently, agricultural production requirements focus on biological farming the essence of which is to use the potential capabilities of natural ecosystems, in particular soil microorganisms. The most extensive and diverse group of soil microorganisms in properties are free-living and symbiotic nitrogen-fixing bacteria. Another group, phosphate-mobilizing soil microorganisms, participate in the conversion of hard-to-reach inorganic and organic phosphates into water-soluble forms assimilated by plants. Environmentally friendly and safe complex biological fertilizers based on isolates of microorganisms from local natural biogeocenoses are important to increase crop yields and improve soil fertility in the conditions of Kazakhstan. The purpose of the submitted work was a lab assessment of the effectiveness of a combined biological fertilizer based on phosphate-mobilizing and nitrogen-fixing bacteria and its compatibility with some fungicidal and herbicide preparations used in the Republic of Kazakhstan. In pot trials, the biological fertilizer BioAzo-Phosfit based on nitrogen-fixing bacteria Raoultella oxytoca MS and phosphate-mobilizing bacteria Serratia plymuthica MS was tested on cucumber seedlings of the Meva variety and spring wheat seeds of the Akmola 2 variety. Tests confirmed the effectiveness of the combined biological fertilizer on cucumber plants according to the main biometric indicators (e.g., length of stem and internodes, number and size of fruits). It was revealed that the average fruit length in the treatment was 12.4 % (p function show_eabstract() { $('#eabstract1').hide(); $('#eabstract2').show(); $('#eabstract_expand').hide(); }