Biomedical Engineering Reference
In-Depth Information
Chapter 21
I
NFLUENCE OF
V
ERBACTIN
P
REPARATION ON
M
ICROBIOLOGICAL
A
CTIVITY OF
I
RRIGATED
S
EROZYON
S
OILS
G. D. Zolotilina,
*
S. M. Khodjibaeva,
O. A. Fedorova and J. J. Tashpulatov
Institute of microbiology, Tashkent, Uzbekistan
A
BSTRACT
Treatment of cotton seeds with Verbactin stimulated growth and development of
useful soil borne bacteria enriching root system with active metabolites that positively
impacted both seeds' germination, growth and development of cotton plants. It was
determined that Verbactin activated community of soil borne microorganisms,
mineralizing organic and mineral compounds, transformating of soil humus, including
ammonificating
and
oligonitrophilic
bacteria,
Azotobacter,
denitrifying
bacteria,
actynomycetes and filamentous fungi.
Keywords:
Verbactin, Verticillium dahliae,
microbial community, serozyom soil
Verticillium wilt on cotton is widely distributed and causes considerable losses to
productivity of cotton all around the world [1-3]. One of the main approaches in improvement
and stabilization of agricultural production is application of biological control of
phytopathogens and pests [4, 5].
During last years in some regions of Uzbekistan an increased infection of cotton plants by
Verticillium wilt caused by fungus
Verticillium dahliae
Kleb. is observed. The infection
causes considerable losses to the yield and quality of fiber [6]. But, absence of domestic
production of biopreparations and high cost of imported preparations, which are sometimes
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