Journal of Oil Palm Research Vol. 20 June  2008 June p.  470-483

Efficacy of single and mixed treatments of Trichoderma harzianum as biocontrol agents of Ganoderma basal stem rot in oil palm

Author(s): SHAMALA Sundram * ; FARIDAH Abdullah ** ; ZAINAL ABIDIN Mior Ahmad + ; UMI KALSOM Yusuf **

Two Trichoderma harzianum strains (FA 1132 and FA1166) were tested as biocontrol agents for basal stem rot in oil palm seedlings artificially infected with the causal pathogen, Ganoderma boninense. The treatment was carried out by applying a Trichoderma-infused surface mulch and periodic applications of a conidial soil drech made from spore suspensions of the respective Trichoderma strains. A disease severity index (DSI) ranging from 0 to 100 was used to assess the disease severity. A single strain application of T. harzianum, FA 1132 gave the best disease suppression with the lowest DSI of 28.35 compared to the infected, non-treated control plants that gave the highest DSI of 86.67. However, FA 1166 as a single application was ineffective, so was the mixture of the two strains. The biological control property of Trichoderma was shown to be strain-specific and not species-specific. In addition, it was found that applying the mixed inocula significantly decresed the performance of FA 1132, the choice strain.

Keywords: , , ,

Author Information
* Malaysian Palm Oil Board, P. O. Box 10620, 50720 Kuala Lumpur, Malaysia.

** Biology Department, Faculty of Science, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia.

+ Plant Protection Department, Faculty of Agriculture, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia.

Cited By

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Source: Scopus
Last updated: 24 February 2017

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