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Assessment of nitrogen and sulphur cycle bacteria and shrimp production in ponds treated with biological products

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Relation http://eprints.cmfri.org.in/10900/
 
Title Assessment of nitrogen and sulphur cycle bacteria and shrimp production in ponds treated with
biological products
 
Creator Abraham, T J
Ghosh, Shubhadeep
Sasmal, Debasis
 
Subject Farming/Culture
 
Description Objective: To study the influence of biological products on the levels of nitrogen and sulphur
cycle bacteria in shrimp culture systems of West Bengal, India.
Methods: The pond water and sediment samples were analyzed for physico-chemical
parameters as per standard methods. The bacteria involved in ammonification, nitrification,
denitrification, sulphate reduction and sulphur oxidation were enumerated by most probable
number technique.
Results: The semi-intensive and modified extensive shrimp farms used a variety of biological
products during various stages of production. No biological products were used in traditional
farms. The water and sediment samples of modified extensive system recorded significantly
higher mean heterotrophic bacterial counts. The counts of ammonia, nitrite and sulphur
oxidizers, and nitrate and sulphate reducers varied among the systems. The cycling of nitrogen
and sulphur appeared to be affected with the intensification of culture practices.
Conclusions: The application of biological products in certain systems helped to maintain
the bacteria involved in nitrogen and sulphur cycles and safe levels of ammonia, nitrite and
nitrate. An assessment of these metabolically active bacteria in shrimp culture ponds and the
application of right kind microbial products would help ameliorate the organic pollution in
shrimp aquaculture.
 
Date 2016
 
Type Article
PeerReviewed
 
Format text
 
Language en
 
Identifier http://eprints.cmfri.org.in/10900/1/Journal%20of%20Coastal%20Life%20Medicine_Ghosh_2016.pdf
Abraham, T J and Ghosh, Shubhadeep and Sasmal, Debasis (2016) Assessment of nitrogen and sulphur cycle bacteria and shrimp production in ponds treated with biological products. Journal of Coastal Life Medicine, 3 (6). pp. 466-470.