A Study of the Fertility and Carbon Sequestration Potential of Rice Soil with Respect to the Application of Biochar and Selected Amendments

摘要

Astudywascarriedouttoassesstheeffectofbiocharonthecarbondynamicsofwetlandricesoilsandonthegrowthandgrainyieldofriceplants(OryzasativaL.).Potexperimentswereconductedwithamendmentsofchemicalandorganicoriginsinadditiontowood-derivedbiochar.Maximumsoilcarbonstoragewasobservedwithbiocharcomparedtoorganicamendmentssuchascompostsandchemicalfertilizer.Majorsoilcarbonsequestrationparameterslikesoilorganiccarbon(SOC),particulateorganiccarbon(POC)andmicrobialbiomasscarbon(MBC)werefoundtobegreaterwithbiochar.Aggregateformationwasalsosignificantunderbiochartrials.Considerablereductioningreenhousegases(GHGs)emission,especiallycarbondioxide(COsub2/sub)andnitrousoxide(Nsub2/subO),wasobservedwithbiochar.Applicationsofbiocharconsiderablyinfluencedthegrowthprofileandgrainyieldofthericeplantscomparedtootheramendments.Hence,theseresultssuggestthatbiocharofappropriateappliedproportioncaninfluencewetlandricesoilcarbondynamicsandhasthepotentialtocombatglobalwarmingwithoutcompromisingproductivity.Theroleofbiocharasagreenviablecarbonnegationoptionissupportedbythestudysincetheresultsshowedapositiveresponsetowardssoilandvegetationcarbonsequestrationandyieldoptimizationevenwithouttheadditionofanynitrogenfertilisers.