简介：Atotalof400surfacesoil(0–15cm)sampleswerecollectedfromcultivatedsoilsrepresentingfoursoilseries,namely,Hariharapur,Debatoli,RajporaandNeeleswaraminOrissa,Jharkhand,HimachalPradeshandKeralastatesofIndia,respectively,andwereanalyzedtomeasurethecontentsoftotalandextractableMnandFe,toestablishtherelationshipamongtotalandextractableMnandFeandsoilproperties,andtocharacterizethespatialdistributionpatternofMnandFeinsomecultivatedacidsoilsofIndia.ThecontentsoftotalaswellasextractableMnandFevariedwidelywithextractantsandsoilseries.However,theamountsofMnorFeextractedbydiethylenetriaminepenta-aceticacid(DTPA),Mehlich1,Mehlich3,0.1molL-1HClandammoniumbicarbonateDTPA(ABDTPA)weresignificantlycorrelatedwitheachother(P<0.01).BasedontheDTPA-extractablecontentsandthecriticallimits(2mgMnkg-1soiland4.5mgFekg-1soil)publishedintheliterature,MnandFedeficiencieswereobservedin7%–23%and1%–3%ofthesoilsamples,respectively.Thecontentofsoilorganiccarbon(SOC)hadgreaterinfluenceontotalandDTPA-extractableFethandidsoilpH.GeostatisticalanalysisrevealedthattotalandDTPA-extractableMnandFecontentsintheacidsoilswereinfluencedbysoilpH,SOCcontent,andexchangeablecationslikepotassium,calciumandmagnesium.SpatialdistributionmapsoftotalandDTPA-extractableMnandFeinsoilindicateddifferentdistributionpatterns.