Journal of Biopesticide

Journal of Biopesticide

2010, Vol. 3, Issue1

EFFICACY OF ENDOPHYTIC PSEUDOMONAS FLUORESCENS (TREVISAN) MIGULA AGAINST CHILLI DAMPING-OFF.


AUTHOR(S)
A. Muthukumar1, R. Bhaskaran3 and K. Sanjeevkumar2

ABSTRACT

Nine bacterial endophytes were isolated from stem and root portions of chillies and tested for their efficacy against Pythium aphanidermatum (Edson) Fitzp. inciting chilli damping-off under glasshouse condition. Out of these nine bacterial endophytes, EBC 5, EBC 7 and EBC 6 recorded the minimum mycelial growth (28.00, 30.66 and 33.33 mm, respectively) with maximum inhibition zone of (12.33, 11.66 and 11.08 mm, respectively) of pathogen over control. In the present study, chilli seeds treated with these endophytes in combination (EBC 5and EBC 6) recorded the lowest incidence of pre and post-emergence damping-off (9.10 and 12.33 per cent, respectively) at seven and 14 days after sowing when compared to individual treatment. This was followed by seed treatment with EBC 5 and EBC 7 in combination. The combination (EBC 5 and EBC 6) treatment also increased the germination percentage, shoot length and root length of chilli plants significantly (87.66%, 13.89 and 4.0 cm, respectively). Further, this writer concluded that the combination of endophytes were more effective in controlling disease when compared to individual treatments.


DOI
https://doi.org/10.57182/jbiopestic.3.1.105-109

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