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Changes in Soil Chemical Properties and Microbial Activities in Response to the Fungicide Ridomil Gold Plus Copper

Author

Listed:
  • Joseph Demanou

    (Laboratory of General Biology. Department of Animal Biology and Physiology, Faculty of Science, University of Yaounde I., P.O. Box 812 Yaounde, Republic of Cameroon)

  • Adolphe Monkiédjé

    (Laboratory of General Biology. Department of Animal Biology and Physiology, Faculty of Science, University of Yaounde I., P.O. Box 812 Yaounde, Republic of Cameroon)

  • Thomas Njiné

    (Laboratory of General Biology. Department of Animal Biology and Physiology, Faculty of Science, University of Yaounde I., P.O. Box 812 Yaounde, Republic of Cameroon)

  • Samuel M. Foto

    (Laboratory of General Biology. Department of Animal Biology and Physiology, Faculty of Science, University of Yaounde I., P.O. Box 812 Yaounde, Republic of Cameroon)

  • Moise Nola

    (Laboratory of General Biology. Department of Animal Biology and Physiology, Faculty of Science, University of Yaounde I., P.O. Box 812 Yaounde, Republic of Cameroon)

  • Serges H. Zebaze Togouet

    (Laboratory of General Biology. Department of Animal Biology and Physiology, Faculty of Science, University of Yaounde I., P.O. Box 812 Yaounde, Republic of Cameroon)

  • Norbert Kemka

    (Laboratory of General Biology. Department of Animal Biology and Physiology, Faculty of Science, University of Yaounde I., P.O. Box 812 Yaounde, Republic of Cameroon)

Abstract

The purpose of the study was to investigate changes of soil chemical and biological properties changes resulting from a single application of the fungicide Ridomil Gold plus copper (Ridomil Gold plus)(mefenoxam 6% + copper oxide 60%) at the following rates 0.25, 0.5, 1, 2, and 10 g m -2 . Selected chemical properties generally differed between fungicide rates over longer incubation periods. Microbial activity indices (available N, ammonification rates and specific enzymatic systems) were more sensitive indicators of change. Values of these indicators generally increased with incubation period and decreased or increased at high rates. Significant changes in P availability occurred after 90 days of incubation at rates ≥ 1 g m -2 . Incorporation of the fungicide significantly increased NH 4 + levels in soil after 75 days of incubation. These changes stimulated soil microbial activity as evidenced by increased ammonification rates especially at long-term exposure. Of the enzyme activities studied, dehydrogenase and ß-glucosidase activities were the most sensitive to ridomil gold plus. This sensitivity was more pronounced with the dehydrogenase activity.

Suggested Citation

  • Joseph Demanou & Adolphe Monkiédjé & Thomas Njiné & Samuel M. Foto & Moise Nola & Serges H. Zebaze Togouet & Norbert Kemka, 2004. "Changes in Soil Chemical Properties and Microbial Activities in Response to the Fungicide Ridomil Gold Plus Copper," IJERPH, MDPI, vol. 1(1), pages 1-9, February.
    • Handle: RePEc:gam:jijerp:v:1:y:2004:i:1:p:26-34:d:2786
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    Citations

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    Cited by:

    1. E. Jastrzębska & J. Kucharski, 2007. "Dehydrogenases, urease and phosphatases activities of soil contaminated with fungicides," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 53(2), pages 51-57.

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