The article shows the results of researches of the natural zeolites influence on potato yield increase. It was found that the treated seed tubers and plants during the growing season with activated zeolite separately and in combination contributed to an increase in crop yield of 3.0-3.6%, when treated with an ultrafine analogue-by 4.3-12. 8% to the background. The marketability of potatoes in the variants where activated zeolite was used varied from 90.9 to 92.9%. When using ultrafine zeolite yield of commercial tubers was 92.9-97.1%. Ultrafine zeolite of particle sizes 80.0-350.0 nm was produced by ultrasonic action on activated zeolite (0.25-40.0 microns) at a frequency of 15.0 Hz (±10%). It was found that high biological activity of ultradispersed zeolite in comparison with actvated analog is caused by highly developed surface. In the process of dispersion of agglomerates and aggregates (associations of primary particles and crystallites) of actvated zeolite, a more developed specific surface of ultrafine zeolite is formed, which increases the number of active sites. Consequently, the processes of interaction between particles, including with a biological object, increase.
The article presents the findings on the use of foliar treatment with suspensions of sapropel, vermicompost, diatomite of conventional grinding and in ultrafine form. Fertilizers, ground to the smallest particles in deionized water under the action of ultrasound, have a high stimulating effect on the crop and have shown better results compared to conventional milled fertilizers. The yield of spring barley of the Prairia variety non-foliar treatment with these fertilizers contributed to an increase in the grain yield of spring barley of the Prairia variety up to 22.1 %. Analysis of the structure of the yield and the chemical composition of grain has showed that diatomite, sapropel and especially vermicompost both in the usual form and especially in the ultradispersed form affect the change in indicators in comparison with the fertilized background.
In this study we analyzed the influence of the pre-sowing treatment of spring barley seeds with the biological preparat Rizoagrin and the micronutrient fertilizer Tenso Cocktail against the background of the mineral fertilizer diammofosk on the germination of seeds, the quality of the grain yield and biomass of barley straw, the structure of the crop, the chemical composition of grain and straw under the conditions of the Republic of Tatarstan on gray forest soil. It was found that the use of Rhizoagrin and Tenso Cocktail in combination with diammophos increases the grain yield up to 4.05 t / ha, which is 117 % more than the control. We noted an increase in the productivity of plants, the number of ears, grain per ear and the weight of 1000 grains in relation to the control in the same variant. The fourth option has the highest indicators in terms of nitrogen content in grain and straw – by 5.40 and 8.62% more than in the control. In the second variant, the nitrogen content in the grain is 3.24 % higher than the control, and in the straw – by 5.17 %. In the third variant, the nitrogen content in grain and straw is 2.70 and 6.89 % higher than the control. In terms of the phosphorus content in grain and straw, the increase in the third and fourth variants is at the same level – 3.06 and 5.26 % in relation to the control. The second option does not have an increase in the phosphorus content. There was a decrease in the content of potassium in grain and straw in all variants compared to the control. In the fourth variant, the potassium content in grain is lower than the control by 8.45 %, in straw – by 5.69 %. In the second variant, the potassium content in the grain is lower in comparison with the control by 4.22 %, in the third variant – by 1.40 %. In straw, the potassium content in the second and third variants is reduced by 1.62 %.
Relevance. The choice of forms and types of preparations for presowing seed treatment, as well as growth regulators is important for the development and level of crop yields. Therefore, the search and application of effective and safe means for seed treatment is an urgent task. Methods. The vegetation experiment was laid in 2018–2020 on oats and barley in 5 kg Wagner vessels. Seeds of cultures before sowing were soaked in suspensions of sapropel and biohumus in the usual form and ultrafine form, obtained by ultrasound dispersion in deionized water. Harvest accounting – in the phase of full ripeness of crops from all plants in the vessel. Qualitative analysis of plant samples was carried out on devices in accordance with the established state standards. Results. In the experiment with oats, the maximum significant increase in grain was obtained in the variant with seed treatment with an ultrafine form of biohumus – 17.8% compared to the background, in the variant with ultrafine sapropel – 9.6 %. In the 2019 experiment with barley, the yield increased by 12.0 (treatment with sapropel) and 11.5 % (treatment with biohumus) compared to the background, when using ultrafine forms – by 34.8 % and 29.8 % respectively. In 2020, the yield increase when using usual form was 15 and 21.0 %, ultrafine form – 21.3 and 28.0 % respectively. The content of ash, nitrogen, phosphorus and potassium in oat grain increased by 7.2; 4.8; 20.5 and 14.3 % respectively, reaching a maximum with the usage of ultrafine form. In the 2019 experiment with barley, the ash content increased by 16.1 %, nitrogen – by 27.7 %, protein – by 16.4–18.3 %, phosphorus and potassium – by 12.6 and 28.3 % respectively. In 2020, the ash content was the highest among all variants and increased by 11.3 %, phosphorus – by 13.6 %, and nitrogen – by 1.75–1.95 %. The protein content in the grain was 10.3–10.7 %, potassium – up to 7 %.
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