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Ureolytic nitrification activities in forest and tea (Camellia sinensis) plantation soils and evaluation of ureolytic nitrifier sensitivity to pestiCides

Indian Agricultural Research Journals

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Title Ureolytic nitrification activities in forest and tea (Camellia sinensis) plantation soils and evaluation of ureolytic nitrifier sensitivity to pestiCides
 
Creator BEZBARUAH, BALAMANI
BORA, TARUN
SALKIA, NEELIMA SALKIA
 
Subject ureolysis, nitrification, acid soil, tea
 
Description An experiment was conducted in 1992 to Compare ureolytic nitrification activities in soil uner tea (Camelliasinensis (L) 0 Kuntze) cu1tivation and forest land adjacent to the tea plantations .Recovery of nitrate from the sOilsamples oftea plantations following incubation with urea confirmed that the actlve nitrificatiOn occurred even in the pHrange of 4.5-5.5. A slight increase in ureolytic nitrification activity in sections showing higher yield ofmade tea wasdetectable in plantations using lower dosages of synthetic fertilisers. Such a relationship was not detected m samplesfrom plantations using a higher dose of chemical fertilisers. Likewise neither the age, nor the organic carbon (%) and PHwere related to the differences in ureolytic- nitrification activity observed in the samples. Comparison of the ureolysisand nitrification rates between plantation samples and the corresponding forest samples showed that this actiVIty waslower in tea plantations in all cases. The ureolytic nitrifier strains isolated from tea plantatlOns were able to grow mculture plates incorporated with several structurally different types of pesticides.
 
Publisher The Indian Journal of Agricultural Sciences
 
Contributor —
 
Date 2013-01-09
 
Type info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
 
Format application/pdf
 
Identifier http://epubs.icar.org.in/ejournal/index.php/IJAgS/article/view/26219
 
Source The Indian Journal of Agricultural Sciences; Vol 69, No 1 (1999)
0019-5022
 
Language eng
 
Relation http://epubs.icar.org.in/ejournal/index.php/IJAgS/article/view/26219/12028
 
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