INFLUENCE OF RISOAGRINE SEED INOCULATION ON RHIZOAGRINE MICROFLORA AND WINTER WHEAT YIELDS IN WESTERN SIBERIA FOREST-STEPPE
https://doi.org/10.31677/2072-6724-2020-55-2-60-68
Abstract
The researchers conduct the field stationary experiment with the use of mineral fertilizers and straw in the grain and steam crop rotation with the withdrawal field of alfalfa and study the number of microflora in the rhizosphere of winter wheat of the new variety Priirtyshskaya after treatment of seeds with biospecimen of complex effect - risoagrine. The highest number of useful crop groups of microorganisms was observed in the variant with inoculation of crop seeds by risoagrine on the basis of applying mineral fertilizers, as well as in combination of inoculation techniques, application of mineral fertilizers and straw (N15P23 + straw + inoculation), respectively, 444 and 355 million UU/yr with 217 million UU/yr in the control group. In the variant with inoculation of winter wheat seeds by mineral fertilizers (N15P23 + inoculation), the number ofoligonitrophils and bacteria, mineralizing mineral phosphates, increased by 2.2 times, nitrifiers - by 60%, microorganisms that utilize organic nitrogen compounds on MPA - by 39, consuming mineral nitrogen on CAA - by 73% compared to the control group. The celluloseolytic soil activity under winter wheat sowing in variants N15P23 + inoculation and N15P23 + straw + inoculation increased to 66.5-67.0%, exceeded the control group by 1.7 times. The highest increase in the crop’s grains was observed in the combination of mineral, organic (straw) and bacterial (rizoagrine) fertilizers - 40.3% in comparison with the control group. Additional nitrogen removal by winter wheat crop due to the activity of associative diazotrophs varied from 6 to 16.5 kg/ha. Correlative relations of high (r=0.84-0.91) and average (r=0.62-0.72) degree of microorganisms in the rhizosphere were observed among the indicators of crop yield and number of microorganisms. The closest correlation took place between the value of winter wheat grain yield and the number of bacteria growing on MPA, including ammonifiers, and the yield and number of nitrifying bacteria.
About the Authors
O. F. Khamova
Omsk Research Agricultural Centre
Russian Federation
Candidate of Biology, Leading Research Fellow
Russian Federation
Candidate of Biology, Leading Research Fellow
E. V. Tukmacheva
Omsk Research Agricultural Centre
Russian Federation
Candidate of Biology, Senior Research Fellow
Russian Federation
Candidate of Biology, Senior Research Fellow
N. F. Balabanova
Omsk Research Agricultural Centre
Russian Federation
Candidate of Biology, Leading Research Fellow
Russian Federation
Candidate of Biology, Leading Research Fellow
N. N. Shuliko
Omsk Research Agricultural Centre
Russian Federation
Candidate of Biology, Senior Research Fellow
Russian Federation
Candidate of Biology, Senior Research Fellow
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Review
For citations:
Khamova O.F., Tukmacheva E.V., Balabanova N.F., Shuliko N.N. INFLUENCE OF RISOAGRINE SEED INOCULATION ON RHIZOAGRINE MICROFLORA AND WINTER WHEAT YIELDS IN WESTERN SIBERIA FOREST-STEPPE. Bulletin of NSAU (Novosibirsk State Agrarian University). 2020;(2):60-68. (In Russ.) https://doi.org/10.31677/2072-6724-2020-55-2-60-68
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