Microbial Status of Different Carbon Sequestering Systems in the Semi-Arid Tropics: Global Theme on Agroecosystems Report no. 25

    Vineela, C and Wani, S P and Padmaja, K V (2006) Microbial Status of Different Carbon Sequestering Systems in the Semi-Arid Tropics: Global Theme on Agroecosystems Report no. 25. Monograph. International Crops Research Institute for the Semi-Arid Tropics , Patancheru, Andhra Pradesh, India.

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    The authors would like to thank the Chief Scientists of AICRPDA at different locations for soil samples and staff for their help. We acknowledge Drs KPR Vittal and B Venkateshwarlu, and V Ramesh of CRIDA; T Bhattacharyya of NBSS&LUP; MC Manna of IISS; and TJ Rego and KL Sahrawat of ICRISAT for their support and advice provided to the project. Financial support provided by National Agricultural Technology Project (RNSP-25), Indian Council of Agricultural Research (ICAR) is gratefully acknowledged.

    Abstract

    Microorganisms perform a key role in nutrient cycling for sustaining the productivity of soils. Microbial status was studied in soil samples from nine long-term experiments at different locations, with different carbon sequestering systems in the semi-arid tropics of India, Microbial population counts were analyzed using spread plate method and were in turn compared with different parameters such as soil treatments, soil type, soil microbial biomass C, soil organic C (SOC), soil respiration rainfall and soil pH. The counts were high in the soil with different treatments. The counts were also high in treatments where a combination of organic and inorganic fertilizers was applied. Vertisols (28 x lO4 CFU g-1 soil) recorded four times more counts of microbial populations than Alfisols (7 x 1Q4 CFU g-1 soil). In few locations, significant correlation was observed with the values of soil microbial biomass C, SOC, soil respiration and microbial populations.

    Item Type: Monograph (Monograph)
    Divisions: UNSPECIFIED
    CRP: UNSPECIFIED
    Subjects: Others > Soil Science
    Depositing User: Mr Sanat Kumar Behera
    Date Deposited: 13 Oct 2011 05:17
    Last Modified: 13 Oct 2011 05:17
    URI: http://oar.icrisat.org/id/eprint/2373
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