Journal of Oil Palm Research Vol. 22 (1) April 2010, p. 729-735

EFFECT OF Beauveria brongniartii AND B. bassiana ON OIL PALM BAGWORM, Pteroma pendula (JOANNIS)

NOR SHALINA Ahmad Tajuddin * ; SITI RAMLAH Ahmad Ali * ; SHAMSILAWANI Ahamed Bakeri * ; NOR ELINA Kamaruzaman **


Beauveria bassiana and B. brongniartii strains 1, 2 and 3, were evaluated for their pathogenicity against the oil palm bagworm, Pteroma pendula. In a laboratory trial, the fungal isolates were found to cause mortality of up to 100% in the first and second larval instars of P. pendula. The lethal dose causing 80% mortality values (LD80) for B. bassiana and B. brongniartii strains 1, and 2 was 1 x 10spores ml-1. The lethal time to 50% mortality value (LT50) of all the isolates was seven days and the lethal time to 80% mortality value (LT80) was 11 days. The results suggested that all four isolates were equally pathogenic to bagworm larvae at a high dose of spore concentrations.


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

** Pejabat RISDA Negeri Terengganu,
Jalan Sultan Ismail,
20700 Kuala Terengganu,
Terengganu, Malaysia.