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Soil microbial
dynamics and enzyme activities as influenced by biofertilizers and split
application of vermicompost in rhizosphere of wheat (Triticum aestivum.
L.)
S. Aechra1*,
R.H. Meena1, S.C.Meena1, S.L. Mundra2, S.S.
Lakhawat3, A. Mordia4 and G. Jat1
1Department of Soil
Science and Agricultural Chemistry, Maharana Pratap University of Agriculture
& Technology, Udaipur, 313 001, India
2Department of
Agronomy, Maharana Pratap University of Agriculture & Technology,
Udaipur, 313 001, India
3Department of
Horticulture, Maharana Pratap University of Agriculture & Technology,
Udaipur, 313 001, India
4Department of
Statistics, Maharana Pratap University of Agriculture & Technology,
Udaipur, 313 001, India
*Corresponding Author Email : sushilaaechra3@gmail.com
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Abstract
Aim:
A field experiment was conducted during rabi season to determine the
effect of biofertilizers and split application of vermicompost on biological
properties (microbial biomass carbon and nitrogen, microbial populations and
enzyme activities) in rhizosphere of wheat.
Methodology: The experiment was laid out in factorial randomized
block design with three replications consisting of twenty treatment
combinations. Soil samples were collected from the plots at 0-15 cm depth
after harvest of wheat crop and soil biological properties analyzed using
standard analytical procedure.
Results:
The experiment results indicated that among biofertilizers treatments, seed
inoculation with Azotobacter + PSB + KMB + ZnSB (B5)
resulted in a significant higher soil microbial biomass carbon, microbial
biomass nitrogen, population of bacteria, fungi and actinomycetes,
dehydrogenase activity and acid phosphatase enzyme activity in comparison to
control. Similarly, application of vermicompost as 50 % VC at sowing + 50 %
VC at tillering (V3) were obtained improved microbial biomass carbon and
nitrogen, microbial population, dehydrogenase activity and acid phosphatase
enzyme activity while remaining at par with 75 % VC at sowing + 25 % VC at
tillering (V4) proved superior in comparison to rest of the
treatments due to continuous supply of nutrients throughout the crop cycle.
Grain and straw yield of wheat also increased due to the application of
biofertilizers and vermicompost over the control.
Interpretation: Biofertilizers (Azotobacter, PSB,
KMB and ZnSB) and split application of vermicompost enhanced the soil
microbial population and enzymatic activities which sustained the soil health
for better wheat production.
Key
words:
Biofertilizers, Dehydrogenase activity, Microbial population, Vermicompost,
Wheat
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Copyright
© 2021 Triveni Enterprises. All rights reserved. No part of the
Journal can be reproduced in any form without prior
permission. Responsibility regarding the authenticity of the data, and the
acceptability of the conclusions enforced or derived, rest completely with
the author(s).
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