Disease asessment and the efficacy of trichoderma as a biocontrol agent of basal stem rot of oil palms

Faridah Abdullah, . and Ilias G.N.M., . and Nelson M., . and Izzati N.A.M.Z., . and Umi Kalsom Yusuf, . Disease asessment and the efficacy of trichoderma as a biocontrol agent of basal stem rot of oil palms. pp. 31-33. ISSN 0128-6072

Basal stem rot (BSR) is a serious disease of oil palms caused by the bracket fungus Ganoderma boninense. The disease may soon pose a threat to the oil palm industry because there is still no effective chemical that can control its spread. This study investigates the efficacy of Trichoderma harzianum as a biological agent of BSR. A disease severity index (DSI) was used to assess the effeicacy of the trials which used T. harzianum conidia suspended in water. Results showed that at the end of experiment (week 20) the uninfected control (I) and infected but untreated control (2) plants had 0 and 100 infection with a corresponding DSI of 0 and 75 respectively. In contrast plants given an early treatment with T. harzianum gave a DSI only 5. In the delayed treatment the DSI was 32.5. This study shows that conidial suspensions of Trichoderma harzianum applied fortnighly as a soil drench at 1-9x10E10 conidia/L/plant up to 20 weeks has the potential to control a disease which has so far evaded chemical treatment.

Full text available from:

Abstract

Basal stem rot (BSR) is a serious disease of oil palms caused by the bracket fungus Ganoderma boninense. The disease may soon pose a threat to the oil palm industry because there is still no effective chemical that can control its spread. This study investigates the efficacy of Trichoderma harzianum as a biological agent of BSR. A disease severity index (DSI) was used to assess the effeicacy of the trials which used T. harzianum conidia suspended in water. Results showed that at the end of experiment (week 20) the uninfected control (I) and infected but untreated control (2) plants had 0 and 100 infection with a corresponding DSI of 0 and 75 respectively. In contrast plants given an early treatment with T. harzianum gave a DSI only 5. In the delayed treatment the DSI was 32.5. This study shows that conidial suspensions of Trichoderma harzianum applied fortnighly as a soil drench at 1-9x10E10 conidia/L/plant up to 20 weeks has the potential to control a disease which has so far evaded chemical treatment.

[error in script]

Item Type:	Article
AGROVOC Term:	ELAEIS GUINEENSIS
AGROVOC Term:	TRICHODERMA HARZIANUM
AGROVOC Term:	BIOLOGICAL CONTROL
AGROVOC Term:	AGENTS
AGROVOC Term:	DISEASE CONTROL
AGROVOC Term:	MALAYSIA ELAEIS GUINEENSIS
AGROVOC Term:	TRICHODERMA HARZIANUM
AGROVOC Term:	CONTROL BIOLOGICO
AGROVOC Term:	AGENTES
AGROVOC Term:	CONTROL DE ENFERMEDADES
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	24 Apr 2025 06:26
URI:	http://webagris.upm.edu.my/id/eprint/21179

Actions (login required)

View Item