Plant and Soil

, Volume 30, Issue 1, pp 109–112 | Cite as

Some effects of diazinon on the microflora of submerged soils

  • N. Sethunathan
  • I. C. MacRae
Short Communication


The application of diazinon, an organophosphorus insecticide, at the rate of 2 kg and 20 kg active ingredient per hectare to submerged Maahas clay significantly stimulated the actinomycete population. A distinct zone of brown pigmentation formed in that part of the profile commonly referred to as the oxidized layer. A profuse growth of actinomycetes developed from the soil samples of this pigmented zone when streaked onto the nutrient agar. A visible increase in algal populations was noted in the standing water of the diazinon-treated soil.


Clay Agar Soil Sample Plant Physiology Active Ingredient 
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  1. 1.
    Gunner, H. B.,et al., Plant and Soil25, 249–264 (1966).Google Scholar
  2. 2.
    Raghu, K. and MacRae, I. C., Can. J. Microbiol.13, 173–180 (1967).PubMedGoogle Scholar
  3. 3.
    International Rice Research Institute, Los Baños, Laguna, Philippines, Ann. Rept.1966.Google Scholar
  4. 4.
    Thornton, H. G., Ann. Appl. Biol.9, 241–274 (1922).Google Scholar

Copyright information

© Martinus Nijhoff 1969

Authors and Affiliations

  • N. Sethunathan
    • 1
  • I. C. MacRae
    • 2
  1. 1.Soil Microbiology DepartmentInternational Rice Research InstituteLos Baños, LagunaThe Philippines
  2. 2.Department of MicrobiologyUniversity of QueenslandBrisbaneAustralia

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