Mineralisation of nitrogen in some soils of Kerala

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dc.contributor.authorUpadhyay, A.K.
dc.contributor.authorPalaniswami, C.
dc.contributor.authorBiddappa, C.C.
dc.date.accessioned2014-07-05T04:59:28Z
dc.date.available2014-07-05T04:59:28Z
dc.date.issued2007-08
dc.description.abstractFour soil types from Kerala viz. Sandy (Oxic quanzipsamments), Red sandy loam (Arenic paleustults ), Laterite (Oxic haplustults) and Kari (Tropic fluvaquents) were taken for studying their rate of nitrogen mineralization. The inorganic N production in thc case of red sandy loam, sandy and laterite soils decreased from 20 days upto 40 days after incubation. Further, a marginal decline in net mineralisation of N after 60 days of incubation followed by increase upto 80 days after incubation was observed. However, in case of Kari soil, the inorganic N production decreased from 20 days to 60 days after incubation, after which it registered an increase upto 80 days after incubation. The rate of mineralisation of inorganic N was more in case of Kari soil (0.543 pg N iday) followed by red sandy loam (0.032 )IS Nlday), sandy (0.027 pg Nlday) and lastly, laterite (0.024 pg N /day). Linear and first order kinetics were worked out. Except for sandy soil which had high R2 value in first order transformation, all the other soil types followed linear transformation. thereby, indicating that the rate of N mineralised is time dependent for Red sandy loam, laterite and Kari soils.en_US
dc.identifier.citationJournal of Plantation Crops, 2007, 35 (2) : 73-75en_US
dc.identifier.urihttp://hdl.handle.net/123456789/3691
dc.language.isoenen_US
dc.publisherIndian Society for Plantation Cropsen_US
dc.subjectKerala soil typesen_US
dc.subjectnitrogenen_US
dc.subjectmineralisationen_US
dc.titleMineralisation of nitrogen in some soils of Keralaen_US
dc.typeArticleen_US

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