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Volume 7
Journal of Geology & Geophysics
ISSN: 2381-8719
Soil Science 2018
October 22-23, 2018
October 22-23, 2018 | Berlin, Germany
2
nd
Annual Congress on
Soil and Water Sciences
Prevention of
E. coli
contamination of plant by restoring soil cohesion with substances of
earthworm castings
Daniel Jin Won Kim
Yongsan International School of Seoul, Republic of South Korea
T
his experiment verified a phenomenon that plants grown in soil contaminated with Escherichia coli (
E. coli
) become
contaminated by the
E. coli
in the soil because materials produced by them weaken soil cohesion and increase the water
evaporation from the soil, which ultimately leads to contamination of the plants. However, as a result of the experiment, the
number of
E. coli
bacteria was decreased in the soil containing earthworms. This is because the soil cohesion did not decrease
due to the substances of earthworm castings, so there was no abnormal increase in water evaporation from the soil, which
finally led to reduction in contamination of the plants growing in the soil. The calcium ions bound to the soil perform an
important role in maintaining the soil cohesion, but the materials produced by
E. coli
separate the calcium ions from the soil
to reduce the soil cohesion. According to the results of the experiment, the water-soluble substances of earthworm castings
suppress the reduction of soil cohesion caused by the loss of calcium due to
E. coli
-producing materials. In addition, these
water-soluble substances do not adversely affect anaerobic and aerobic soil bacteria responsible for material circulation in soil,
but it can inhibit the growth of E. coli and the reduction of soil cohesion by
E. coli
. These results will provide a new perspective
and solution for harmful bacterial contamination of organic crops.
00jwkim00@gmail.comJ Geol Geophys 2018, Volume 7
DOI: 10.4172/2381-8719-C2-021