Studies conducted as part of the Federal target program "Research and Development in Priority Directions for the Development of the Russian Science and Technology Complex for 2014-2020", showed high efficiency of interaction of calculated norms of mineral fertilizers with modern bioagents RECB-50B, RECB-95B and adaptogenic drugs. At the same time, the actual yield of spring rapeseed of the Gedemin variety exceeds the planned one (3 t/ha) by 9.3-12.3 %, respectively, the chemical load on the environment is reduced and the cost of production of oilseeds is reduced.

The research was carried out to study the productivity and adaptability of sunflower hybrids SI Chester, Rosetta, Arco, Alcantara, SI Avenger, NK Fortimi, Suomi HTS, Suzuka HTS in the soil and climatic conditions of the Republic of Tatarstan. Field experiments were carried out in 2020-2021 on the basis of the Agrobiotechnopark (Narmonka village of the Laishevsky municipal district of the Republic of Tatarstan), laboratory analyses were carried out at the Agroecological Research Center of the Kazan State Agrarian University. According to the research results, it was found that Fortimi and Avenger hybrids differed in plant safety before harvesting and in height (99.8% and 172 and 166 cm, respectively). According to these indicators, it can be concluded that Fortimi and Avenger hybrids are more adapted to the soil and climatic conditions of the Republic of Tatarstan. In field experiments, a direct correlation was observed between the number and mass of weed plants and the height of sunflower plants. The least contamination was on tall crops of the Fortimi hybrid (5.2 pcs/m2 and 4.1 g/m2, respectively). The hybrids Fortimi and Avenger also differed in the structure of the crop. So, according to the hybrids, the largest diameter of the basket was 13.5 and 12.0 cm and the largest mass of 1000 seeds was 70.7 and 68.4 g, respectively. Four of the six hybrids studied showed very high yield results. In the experiments, the following yield indicators were obtained: Alcantara (3.29 t/ha), Fortimi (2.46 t/ha) and Rosetta (2.32 t/ha). These hybrids provided a gross harvest of oilseeds by 1.29; 0.46; 0.32 t/ha, respectively, higher than the planned yield of 2.0 t/ha.

The aim of the present study was to evaluate the influence of different extracts (water, ethanol, enzymatic) from germinated seeds of spring barley on the development of Pseudomonas putida bacteria. The tests on optical density were performed to study the influence of different extracts on the development of model extracts. The analysis of the influence of different extracts from germinated seeds of spring barley on biological agent - Pseudomonas putida PCL1760, contained in biopreparations for crop protection showed that ethanol extract from Raushan variety of spring barley increased the resistance of Pseudomonas putida PCL1760 to the heat and osmotic stresses. All the types of extracts did not contribute to the increase of bacteria resistance to low temperatures. There was no significant difference established between the activity of spring barley extracts with vernalization and without vernalization. The materials of the study showed that ethanol extracts from spring barley can be used for the development of Pseudomonas spp. based on biopreparations for the enhancement of biocontrol microorganisms (BCMs) activity.

Production volumes must be increased not by any means, but only by those of them that are economically sound and justify the labor of present-day agricultural workers and funds spent on solution of its problems. The number of such priorities undoubtedly includes realization of the complex program of developing biotechnologies, approved by the President of the Russian Federation, V.V. Putin, on April 24, 2012. It is aimed at the reduction of expenditures on the production of competitive, environmentally safe foodstuff based on widespread use of modern fertilizing and stimulating compositions, organic and mineral nutrient solutions and biological preparations. In this connection, the questions of foliar dressing, discussed in this work, using various nutrient solutions, containing highly digestible amino acids and chelate forms of microfertilizers of poorly explored in Middle Volga region ryegrass agrocoenoses, are not only relevant, but are also significant from the theoretical and practical viewpoints.

No abstract