CHARACTERIZATION OF SOILS FOR CHEMICAL PROPERTIES AND HEAVY METAL DISTRIBUTION UNDER DIFFERENT CROPPING SYSTEMS IN BELGAVI DISTRICT OF KARNATAKA

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dc.contributor.advisorS. M. PRASANNA
dc.contributor.advisorM. S. NAGARAJA
dc.contributor.advisorNARAYANAPUR, VIJAYKUMAR B.
dc.contributor.advisorKAMBLE, ARUNKUMAR K.
dc.contributor.authorG. KEERTHANA
dc.date.accessioned2023-10-16T12:07:53Z
dc.date.available2023-10-16T12:07:53Z
dc.date.issued2020
dc.description.abstractA soil survey was carried out for assessment of physic-chemical properties and heavy metal distributions under different cropping systems in Belgavi district of Karnataka. Further, remediation experiment was conducted to evaluate the efficacy of ameliorants in order to reduce the bioavailability of Cd, Ni and Pb in spiked soils. The surveyed soil samples categorized based on elevation intervals and cropping systems found to have soil reaction ranged from slightly acidic to alkaline (5.5-8.4). At higher elevations due to leaching effect the soil pH was observed to be slightly acidic in contrast to lower elevations which were found to be remained from neutral to alkaline. In case of organic carbon, most of the soil samples remained medium to high in status. Available micronutrients such as DTPA-Fe and Mn were found to be high in status in majority of soil samples. The available Cu and Zn status were found to be medium to high. DTPA extractable heavy metals such as Cd, Ni and Pb were found to be below the critical limit in all the soil samples. Correlation studies showed that the soil pH and SOC major influence on heavy metal availability. Cd, Ni and Pb were negatively correlated with soil pH. However, the influence of soil organic matter was positively associated with heavy metals. An incubation study was performed in heavy metals spiked soils with various ameliorants in order to evaluate the bioavailability and efficacies of amendments in immobilization of Cd, Ni and Pb fractions. A vulnerable soil spiked with 100 ppm of each Cd, Ni and Pb was treated with ameliorants like lime, potassium di-hydrogen phosphate (KH2PO4), biochar, zeolites, FYM, vermicompost, gypsum and pressmud. Among the ameliorants, lime (1%) found to be most effective in reducing bio-active form of Cd. Potassium di-hydrogen phosphate (KH2PO4) (1%) was highly effective in decreasing labile Pb. For Ni, amendments such as lime, pressmud, vermicompost and zeolites performed best to other ameliorants in reducing mobile pool of nickel.
dc.identifier.otherUHS18PGM1076
dc.identifier.urihttps://krishikosh.egranth.ac.in/handle/1/5810198932
dc.keywordsHorticulture
dc.keywordsSoil Science
dc.keywordsAgril. Chemistry
dc.keywordsPhysico-chemical
dc.keywordsCropping systems
dc.keywordsRemediation
dc.keywordsAmeliorants
dc.keywordsSoil samples
dc.keywordsBioavailability
dc.keywordsSpiked soils
dc.keywordsAlkaline
dc.keywordsOrganic carbon
dc.keywordsMicronutrients
dc.keywordsIncubation
dc.keywordsImmobilization
dc.keywordsPotassium
dc.keywordsDi-hydrogen
dc.keywordsPhosphate
dc.keywordsBiochar
dc.keywordsZeolites
dc.keywordsVermicompost
dc.keywordsGypsum
dc.keywordsNickel
dc.keywordsUHS18PGM1076
dc.keywordsT643
dc.language.isoEnglish
dc.pages148p. (Due to pdf. conversion there is a difference in pages of soft copy and hard copy).
dc.publisherUniversity of Horticultural Sciences, Bagalkot. (College of Horticulture, Bagalkot).
dc.subSoil Science and Agriculture Chemistry
dc.themeCHARACTERIZATION OF SOILS FOR CHEMICAL PROPERTIES AND HEAVY METAL DISTRIBUTION UNDER DIFFERENT CROPPING SYSTEMS IN BELGAVI DISTRICT OF KARNATAKA
dc.these.typeM.Sc
dc.titleCHARACTERIZATION OF SOILS FOR CHEMICAL PROPERTIES AND HEAVY METAL DISTRIBUTION UNDER DIFFERENT CROPPING SYSTEMS IN BELGAVI DISTRICT OF KARNATAKA
dc.typeThesis
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