Citation
Tan A.M., . (1990) Control of phytophthora diseases of Hevea brasiliensis by trunk injection in Malaysia. [Proceedings Paper]
Abstract
Abnormal leaf fall and black stripe tapping panel disease caused by Phytophthora palmivora Butler and Phytophthora botryosa Chee are important diseases of rubber Hevea brasiliensis Muell. Arg. in Malaysia. Control of these diseases by trunk injection with phosphorous acid Fosject and Phosethyl-Al Aliette were evaluated. Six preventive trials were carried out on mature trees of susceptible clones in disease endemic areas. Each tree was injected with a dosage of about 16g/tree for phosphorous acid and about 8g/tree for phosethyl-Al. Trees injected with phosphorous acid had better canopies and almost free from black stripe infections even one year after injection. The effect was less with phosethyl-Al. The effect of fungicides on lesion development was studied on artificially induced lesions on stems of nursery plants. Both fungicides reduced lesion development caused by P. palmivora and P. botryosa. The results suggest that trunk injection with phosphorous acid has potential in controlling Phytophthora diseases of rubber
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Abstract
Abnormal leaf fall and black stripe tapping panel disease caused by Phytophthora palmivora Butler and Phytophthora botryosa Chee are important diseases of rubber Hevea brasiliensis Muell. Arg. in Malaysia. Control of these diseases by trunk injection with phosphorous acid Fosject and Phosethyl-Al Aliette were evaluated. Six preventive trials were carried out on mature trees of susceptible clones in disease endemic areas. Each tree was injected with a dosage of about 16g/tree for phosphorous acid and about 8g/tree for phosethyl-Al. Trees injected with phosphorous acid had better canopies and almost free from black stripe infections even one year after injection. The effect was less with phosethyl-Al. The effect of fungicides on lesion development was studied on artificially induced lesions on stems of nursery plants. Both fungicides reduced lesion development caused by P. palmivora and P. botryosa. The results suggest that trunk injection with phosphorous acid has potential in controlling Phytophthora diseases of rubber
Additional Metadata
| Item Type: | Proceedings Paper |
|---|---|
| Additional Information: | Summary En |
| AGROVOC Term: | HEVEA BRASILIENSIS |
| AGROVOC Term: | CONTROL DE ENFERMEDADES |
| AGROVOC Term: | PHYTOPHTHORA |
| AGROVOC Term: | MALASIA/ CAIDA DE LAS HOJAS |
| AGROVOC Term: | INYECCION EN EL ARBOL |
| AGROVOC Term: | TALLO |
| Geographical Term: | MALAYSIA |
| Depositing User: | Ms. Norfaezah Khomsan |
| Last Modified: | 24 Apr 2025 05:26 |
| URI: | http://webagris.upm.edu.my/id/eprint/15074 |
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