The Effect of Microbial Preparations on Biological Activity of the Soil and Yielding Ability and Quality of Potato.

Autor: Zhevora, S. V., Fedotova, L. S., Timoshina, N. A., Knyazeva, E. V., Shabanov, A. E.
Zdroj: Russian Agricultural Sciences; Sep2019, Vol. 45 Issue 5, p443-448, 6p
Abstrakt: The effectiveness of microbial preparations against the background of various doses of mineral fertilizers and without them was studied in two short-term experiments from 2015 to 2018. The goal of the present study was to increase the productivity and quality of potatoes by using full and reduced (by 30 and 50%) doses of mineral fertilizers in combination with various microbial preparations due to the biological activity of sod-podzolic sandy loam soil and better digestibility of nutrients. In the field test of 2015–2016, when using mineral fertilizers (N45–90P45–90K60–120), the potato yield was 24.1–27.9 t/ha; the combination of N45P45K60 with preplant treatment of tubers using microbiological preparations Azolen, Agrinos 1, and Biocomposite-correct increased the yield by 27.6–28.5%, while biopreparations made it possible to increase the yield by 3.5–4.4 t/ha or 14.5–18.3%. In the field experiment (2016 and 2017–2018), the maximum potato yield (34.0–35.7 t/ha) was obtained using the Extrasol microbiological preparation both separately for preplant treatment of tubers and in combination with foliar spraying of Agrinos 2 and Extrasol against the background of a full dose of fertilizers (N90P90K90), while the increase caused by the biological component of the nutrition system was 6.5–8.2 t/ha or 23.6–29.8%. In the experiment with an NPK dose reduced by 30% in combination with Agrinos (N60P60K60 + Agrinos 1 + 2 (5 + 2.5 L/ha)), the yield level was 4.6 t/ha (17%) higher than that obtained with a full dose of NPK. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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