International Journal of Agriculture, Environment and Biotechnology
Citation: IJAEB: 8(2): 365-379 June 2015
DOI Number: 10.5958/2230-732X.2015.00045.5
©2015 New Delhi Publishers. All rights reserved
SOIL SCIENCE
Effect of moisture regimes and pesticides of different
biodegradability on transformation of different forms of
inorganic and organic N in a dominant soil series of
West Bengal
ArunavaȱDas 1 ,ȱNiladriȱPaul 2 *ȱandȱDipankarȱSaha 3
1 Office of the Assistant Director of Agriculture, Bankura, Government of West Bengal, India.
2 Department of Soil Science and Agricultural Chemistry, College of Agriculture, Tripura, India.
3 Department of Soil Science & Agricultural Chemistry, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, Nadia, India.
*Corresponding author: nilupaul82@rediffmail.com
Paper No. 329
Received: 11 September 2014
Accepted: 20 May 2015
Published: 29 June 2015
Abstract
Aȱlaboratoryȱexperimentȱwasȱconductedȱtoȱstudyȱtheȱeffectȱofȱpesticidesȱofȱdifferentȱbiodegradabilityȱ
onȱ changesȱ inȱ inorganicȱ andȱ organicȱ formsȱ ofȱ Nȱ inȱ soilȱ maintainedȱ underȱ twoȱ differentȱ moistureȱ
regimes.ȱResultsȱrevealedȱthatȱirrespectiveȱofȱpesticidesȱandȱNȱtreatment,ȱcomparativelyȱhigherȱamountȱ
ofȱavailableȱNȱisȱrecordedȱinȱwaterloggedȱthenȱtheȱsoilȱkeptȱatȱ60%ȱMHC.ȱAdditionȱofȱpesticidesȱatȱ
lowerȱdoseȱaffectsȱtheȱtransformationȱprocessȱofȱorganicȱNȱinȱsoil.ȱIrrespectiveȱofȱpesticideȱtreatment,ȱinȱ
general,ȱhydrolysableȱNH 4 + ȱ-NȱdecreasedȱbutȱonȱtheȱotherȱhandȱaminoȱacidȱNȱincreasedȱinȱsoil.ȱAgain,ȱ
theȱintensityȱofȱdecreaseȱorȱincreaseȱisȱmoreȱinȱwaterloggedȱthanȱtheȱsoilȱmaintainedȱunderȱ60%ȱofȱtheȱ
MHC.
Highlights
  • ȱ TheȱchangesȱinȱdifferentȱNȱformsȱinȱcomparisonȱtoȱdifferentȱmoistureȱregimesȱinȱsoil.
  • ȱ Affectivityȱ ofȱ pesticidesȱ onȱ differentȱ Nȱ formsȱ isȱ evaluatedȱ inȱ bothȱ waterloggedȱ andȱ 60%ȱ MHCȱ
    • conditions.
    Keywords :ȱMoistureȱregimes,ȱpesticides,ȱhydrolysableȱNH 4 + ȱ-NȱandȱaminoȱacidȱN.
    Nitrogenȱisȱoneȱofȱtheȱmajorȱnutrientsȱrequiredȱbyȱ Bradyȱandȱweilȱ2007;ȱLiuȱ et al. 2007).ȱEnvironmentalȱ
    plantȱ forȱ growthȱ andȱ metabolicȱ activities,ȱ mostlyȱ conditionsȱasȱwellȱasȱmanagementȱpracticesȱchangeȱ
    takenȱ fromȱ theȱ soil.ȱ Nȱ presentȱ inȱ soilȱ generallyȱ theȱliberationȱprocessȱandȱqualityȱofȱsoilȱNȱreleased.ȱ
    comesȱfromȱnaturalȱsourcesȱandȱappliedȱfertilizers.ȱ TheȱefficientȱutilizationȱofȱNȱfromȱnativeȱorȱappliedȱ
    BothȱtypesȱofȱNȱareȱimportantȱforȱgrowingȱplants.ȱ sourcesȱ dependsȱ onȱ theȱ clearȱ understandingȱ
    Introductionȱ ofȱ highȱ yieldingȱ varietiesȱ ofȱ cropsȱ ofȱ differentȱ transformationȱ processesȱ inȱ soilȱ
    hasȱ drawnȱ furtherȱ attentionȱ forȱ efficientȱ useȱ ofȱ (Nyiranezaȱ andȱ Snappȱ 2007;ȱ Srivastavaȱ andȱ Singhȱ
    N-fertilizersȱinȱparticular.ȱTheȱamountȱofȱNȱsuppliedȱ 1996).ȱ Managementȱ practicesȱ doȱ influenceȱ theȱ Nȱ
    naturallyȱ duringȱ aȱ croppingȱ seasonȱ isȱ influencedȱ transformationȱprocess.ȱDifferentȱNȱtransformationȱ
    byȱ manyȱ factorsȱ (Jennyȱ andȱ Raychoudhuriȱ 1960;ȱ processesȱ inȱ soilȱ mayȱ proceedȱ simultaneouslyȱ andȱ