Аннотация
Oilseed flax plays a significant role in solving this problem, as one of the most productive grain crops.In this case, adjusting the seeding rate is an affordable and effective method for successfully managing the crop's productivity.The purpose of this study is to investigate the effect of fertilisers of microbial origin on the structural elements of the oilseed flax crop, agrochemical composition and microbocenosis of the soil in the conditions of Northern Kazakhstan.Biotesting was carried out in laboratory conditions to determine the growth-stimulating properties and toxicity of various doses of biological fertiliser in relation to oilseed flax seedlings.And the field studies were carried out in the conditions of carbonate soils of southern chernozem at the experimental site of the Barayev Research and Production Centre for Grain Farming, located in the Nauchnyi village, Akmola region.According to the results of the experiment, processing of flax seeds with biofertilisers based on effective microorganisms of complex action has a positive effect on the survivability of plants, the number of seeds in the boll.The novelty of the article lies in the fact that for the first time the influence of biological fertilizers on the yield of oilseed flax in Kazakhstan was investigated.