Phosphorus Behaviour in Boralu Series Soil of Rubber (Hevea brasiliensis) Plantations

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dc.contributor.authorSamaranayaka, K.T.T.
dc.contributor.authorHerath, H.M.S.K.
dc.contributor.authorSenevirathna, A.M.W.K.
dc.contributor.authorHettiarachchi, R.P.
dc.contributor.authorSilva, E.D.
dc.contributor.authorEdirimanna, V.
dc.date.accessioned2021-01-25T09:20:31Z
dc.date.available2021-01-25T09:20:31Z
dc.date.issued2020
dc.description.abstractMonoculture cropping system adopted for more than a hundred years in rubber (Hevea brasiliensis) plantation with same agro-management practices has resulted in nutrient imbalance due to either depletion or accumulation of nutrients in soils. Phosphorus (P) is an essential macronutrient for rubber plantations. The main objective of this study was to determine P behaviour in Boralu series soil in relation to soil pH, organic carbon, available P, moisture content, cation exchange capacity, and bulk density. Forty-eight soil samples representing Boralu series soil were evaluated for available P by NH4F/HCl and organic carbon by the Walkley Black method. Descriptive statistical data were derived and a regression analysis was also carried out to find a relationship between soil parameters. Available P varied from 30.77mg kg-1 in manure circle and 23.20mg kg-1 outside the manure circle. Organic carbon content in both areas, in and out of the manure circle, varied from 1.16 to 1.16%. Significant (p=0.03) differences were observed between the inside and outside the manure circle for organic carbon content. Whereas no significant differences between the inside and outside of manure circle were observed for the moisture content (p=0.31), available P (p=0.37), and cation exchange capacity(p=0.13). There was a positive correlation between organic carbon and available phosphorus with R2=0.27 by the action of phosphorus solubilizing microbes. There was a negative correlation between the organic carbon content and soil pH with R2=0.27as well as available P and bulk density with R2=0.25. Results show that available P content increase with organic matter. Keywords: Available phosphorus, Boralu series, Bulk density, Organic carbon, pHen_US
dc.identifier.isbn9789550481293
dc.identifier.urihttp://www.erepo.lib.uwu.ac.lk/bitstream/handle/123456789/5634/proceeding_oct_08-99.pdf?sequence=1&isAllowed=y
dc.language.isoenen_US
dc.publisherUva Wellassa University of Sri Lankaen_US
dc.relation.ispartofseries;International Research Conference
dc.subjectAgricultureen_US
dc.subjectRubber Technologyen_US
dc.subjectCrop Productionen_US
dc.titlePhosphorus Behaviour in Boralu Series Soil of Rubber (Hevea brasiliensis) Plantationsen_US
dc.title.alternativeInternational Research Conference 2020en_US
dc.typeOtheren_US
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