The use of single and mixed strains of Trichoderma harzianum as biological control agents on oil palm seedlings

Shamala Sundram and Faridah Abdullah and Zainal Abidin M. A. and Umi Kalsom M. Y. (2003) The use of single and mixed strains of Trichoderma harzianum as biological control agents on oil palm seedlings. [Proceedings Paper]

This study investigates the efficacy of Trichoderma harzianum as a biological control agent when applied to oil palm seedlings artificially infected with Ganoderma boninense, the causal pathogen of basal stem rot. Two strains of T. harzianum (isolates T32 and T66) were used in 3 treatments; each isolate was used singly and the third, as a mixture of 1:1 T32 and T66. Assessment of results was based on Disease Severity Index (DSI). Control C1 consisted of uninoculated untreated seedlings and control C2 artificially-infected but untreated seedlings. Results showed that the lowest DSI value was obtained for seedlings given a single treatment of T32, at 29. 7%. The highest DSI came from infected untreated control at 91. 7%. This study concludes that a single treatment with T32 gave the best results compared to the mixed treatment of T32 and T66 (DSI 75%) and to the single treatment using T66 (76. 7%).

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Abstract

This study investigates the efficacy of Trichoderma harzianum as a biological control agent when applied to oil palm seedlings artificially infected with Ganoderma boninense, the causal pathogen of basal stem rot. Two strains of T. harzianum (isolates T32 and T66) were used in 3 treatments; each isolate was used singly and the third, as a mixture of 1:1 T32 and T66. Assessment of results was based on Disease Severity Index (DSI). Control C1 consisted of uninoculated untreated seedlings and control C2 artificially-infected but untreated seedlings. Results showed that the lowest DSI value was obtained for seedlings given a single treatment of T32, at 29. 7%. The highest DSI came from infected untreated control at 91. 7%. This study concludes that a single treatment with T32 gave the best results compared to the mixed treatment of T32 and T66 (DSI 75%) and to the single treatment using T66 (76. 7%).

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Item Type:	Proceedings Paper
Additional Information:	Available at Perpustakaan Sultan Abdul Samad, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia. TP684 P3I61 2003 Call Number
AGROVOC Term:	Trichoderma harzianum
AGROVOC Term:	biological control
AGROVOC Term:	oil palm > oil palm Prefer using Elaeis guineensisElaeis guineensis
AGROVOC Term:	experimental design
AGROVOC Term:	pathogens
AGROVOC Term:	strains
AGROVOC Term:	biological control agents
AGROVOC Term:	plant disease control
Geographical Term:	Malaysia
Depositing User:	Nor Hasnita Abdul Samat
Date Deposited:	04 Aug 2024 09:28
Last Modified:	04 Aug 2024 09:28
URI:	http://webagris.upm.edu.my/id/eprint/883

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