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Soil quality and carbon sequestration under conservation agriculture with balanced nutrition in intensive cereal based system.

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Title Soil quality and carbon sequestration under conservation agriculture with balanced nutrition in intensive cereal based system.
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Creator Parihar CM
Singh AK
Jat SL
Dey A
Nayak HS
Mandal BN
Saharawat YS
Jat ML
Yadav OP
 
Subject Carbon sequestration Nutrient management Soil quality index Zero tillage Site specific nutrient management
 
Description Not Available
Conventional tillage practices and imbalanced use of inorganic fertilizers is well known to result in poor soilhealth.Alternativetillageandprecisionnutrientmanagementareimportantstrategiesfortacklingtheissuesofsoilhealthdeterioration,particularlyincereal - basedintensivecroppingsystems.Therefore,weconducteda4 - yearstudywiththeobjectiveof(a)monitoringthechangesinsoilphysical,biologicalandchemicalpropertiesand crop productivity, (b) development of soil quality index - SQI, and monitor its’ changes against systemproductivityasmanagementgoal,and(c)studyingthechangesinsoilorganiccarbon - SOCinrelationtoannualCinput.Theexperimentwaslaidoutinasplit - plotdesignwith3 - tillagepractices[zerotillage - ZT;permanentbeds - PB; and conventional tillage - CT] and 4 - nutrient management strategies [Control (unfertilized), farmers’fertilizer practice - FFP, recommended fertilizers doses - Ad - hocand site specific nutrient management - SSNM]under a continuous maize (Zea maysL.) - wheat (Triticum aestivumL.) - mungbean (Vigna radiataL. Wilczek)rotationinasandyloamsoil(TypicHaplustept)ofnorth - westernIndo - Gangeticplains(NW - IGP)ofIndia.The (ZT/PBwithSSNM/Ad - hocnutrientmanagementresultedinhighervaluesofa) physicalparametersviz.,waterstable aggregates>250 μm, saturated hydraulic conductivity (Ksat) and mean weight diameter - MWD, (b che - micalparametersviz.,SOC,availableN,P,andK,andc)biologicalparametersviz.,microbialbiomasscarbonandenzymeactivities(fluoresceindiacetatehydrolase,dehydrogenase,ß - glucosidaseandalkalinephosphatase)comparedwithCTandunfertilizedtreatments.TheCApracticesrecordedanincreaseinWSA(12–21%),MWD(14–29%),andKsat(11–14%)comparedwithCTatthe0 - 0.15mand0.15–0.30msoildepths,respectively.ThePB - SSNMregistered(44.1%)higherSOCcontentascomparedtoCT - unfertilizedplots.ValuesforMBC,FDAandβGAdeclinedintheorderSSNM=Ad - hoc>FFP>Control.While,theDHAdeclinedintheorderSSNM>Ad - hoc=FFP>Control.PrincipalcomponentanalysisincludedMWD,SOCandavailableKintheminimumdataset(MDS) as the soil quality indicators. Adoption of PB/ZT resulted ∼22.5% higher SQI compared with CT. TheSSNM plots improved SQI by ∼19.3% and ∼5.3% over unfertilized and FFP. The SSNM based CA practicesattainedasignificantlyhigherannualCsequestrationratethanothertreatments.Therefore,adoptionofCAwithSSNMandAd - hocnutrientmanagementinintensivecerealbasedsystemsofNW - IGPisessentialforimprovingnutrientcycling,soilquality,cropproductivityandC - sequestrationpotential.
Not Available
 
Date 2020-12-25T16:46:51Z
2020-12-25T16:46:51Z
2020-05-18
 
Type Research Paper
 
Identifier Not Available
0167-1987
http://krishi.icar.gov.in/jspui/handle/123456789/43623
 
Language English
 
Relation Not Available;
 
Publisher Elsevier