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Research Article

Effects of various soil management practice on earthworm population
structure across rainy and post-rainy seasons under the maize crop

V. Srinivas Reddy1, N. Venu2 and M. Vikram Reddy3

1-3 Department of Zoology, Kakatiya University, Warangal-506 009, Telangana State, India

E-mail: srinivasreddi1968@gmail.com

Abstract
Background: Earthworms are known for their beneficial role in the soil system since the time immemorial.
The  present investigation was undertaken to assess the effects of various soil management practice on
earthworm population structure, both number and biomass (wet), across rainy and postrainy seasons under
the maize crop.
Methods: The earthworms were sampled by hand-sorting method in three randomly selected areas, each 25
x 25 cm, and 25 cm deep in each plot (replicate) every month during two crop seasons (July to September
,1996 and June to October, 1997) covering both rainy (June to September) and postrainy (October to
January) seasons.
Results: The percentage composition of the juvenile earthworms ranged between 1.5 and 14.5 % across the
treatments. In zero tillage treatments, their percentage composition ranged between 2.1 % in rice - straw
amendment and 4.8% in farmyard manure amendment. In Shallow tillage treatments, its percentage
composition ranged from 1.4 % in bare amendment to 2.3 % in farmyard manure amendment. In deep tillage
treatments. In perennial ley treatments, they were in low density in pigeon pea treatment (92 m-2 ) which
increased to 133 m-2 in S. hamata treatment.
Conclusion: Analysis of Variance (ANOVA) revealed that the total earthworm population densities in tillage
and organic amendment treatments were significantly different between rainy and post-rainy seasons,
increasing more than fivefold during the postrainy season compared to that of the rainy season, the
difference being statistically significant.

Keywords: Earthworm, Rainy and Post-rainy seasons, Maize crop, Biomass


Published online 21st June, 2015
2015 Published by Global Science Publishing Group, USA

Cite this Article as

V. Srinivas Reddy, N. Venu and M. Vikram Reddy (2015). Effects of various soil management practice on
earthworm population structure across rainy and post-rainy seasons under the maize crop. The Ame J Sci &
Med Res, 1(1):120-128. doi:10.17812/ajsmr20151121

Published online 21st June, 2015
The Ame J Scie & Med Res, Volume 1, Issue 1
DOI: http://dx.doi.org/10.17812/ajsmr20151121
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