Microbial Degradation of Pesticides in Tropical Soils

  • N. Sethunathan
  • T. K. Adhya
  • K. Raghu


Hot and humid conditions of the tropical and subtropical environments, as exist in most developing countries, favor the buildup of a myriad of insect pests and disease pathogens harmful to man and his agriculturally important crops. Furthermore, in recent years, intensive and extensive cultivation of new high-yielding crop varieties with high nitrogen input in several tropical countries has led to serious outbreaks of certain insect pests that were previously considered minor pests, such as brown planthoppers (Nilaparvata lugens) in rice (Kulshreshtha et al., 1974). Consequently, there has been a steady increase in the use of pesticides in most tropical countries in recent years. Pesticide use in most developing countries is still very low, with an input of 330 g/ha in India as compared to 1490 g/ha in a developed country such as Japan (Anonymous, 1979A). However, there are localized areas of heavy pesticide use, such as in cotton, tea, and cocoa and in irrigated rice culture, raising problems of environmental contamination.


Microbial Degradation Hydrogen Sulfide Methyl Parathion Tropical Soil Nonsterile Soil 
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Copyright information

© Plenum Press, New York 1982

Authors and Affiliations

  • N. Sethunathan
    • 1
  • T. K. Adhya
    • 1
  • K. Raghu
    • 2
  1. 1.Laboratory of Soil MicrobiologyCentral Rice Research InstituteCuttackIndia
  2. 2.Biology and Agriculture DivisionBhabha Atomic Research CentreBombayIndia

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