Mycobiology

The Korean Society of Mycology (한국균학회)
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Biological Control of Alternaria Fruit Rot of Chili by Trichoderma Species under Field Conditions

  • Begum, Most. Ferdousi (Biotechnology and Microbiology Laboratory, Department of Botany, University of Rajshahi) ;
  • Rahman, M.A. (Biotechnology and Microbiology Laboratory, Department of Botany, University of Rajshahi) ;
  • Alam, M. Firoz (Biotechnology and Microbiology Laboratory, Department of Botany, University of Rajshahi)
  • Received : 2010.02.17
  • Accepted : 2010.02.22
  • Published : 2010.06.30
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Abstract

Trichoderma strains were evaluated under field conditions to assay their efficacy in suppressing Alternaria fruit rot disease and promoting chili plant growth. The experiment was conducted at the Botanical Garden, Rajshahi University, Bangladesh from July 2006 to March 2007. Application of Trichoderma harzianum IMI 392432 significantly (p = 0.05) suppressed the disease compared to Alternaria tenuis (T2) treatment and improved both growth and yield. The treatment T4 (T. harzianum IMI-392432 + A. tenuis) was most effective in reducing disease percentage (72.27%) compared to A. tenuis (T1) treatment. The highest seed germination rate (85.56%) and the highest growth and yield (12.5 g/plant) was also recorded in the same treatment (T4), followed by T5 (T. harzianum IMI-392433 + A. tenuis), T6 (T. harzianum IMI-392434 + A. tenuis), T2 (T. virens IMI-392430 + A. tenuis), and T3 (T. pseudokoningii IMI-392431 + A. tenuis) treatment, while single treatment with A. tenuis significantly decreased these values.

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References

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