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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