Plant extracts for the control of Azolla pathogens

Garcia B.P., . and Visitacion Lawas M.A., . (1990) Plant extracts for the control of Azolla pathogens. [Proceedings Paper]

Plant species reported to have medicinal value and fungicidal properties on other fungal genera were collected and extracted using water. Crude water extracts of 7 out of 127 plant species screened in vitro for their fungicidal properties showed inhibitory activity against Azolla pathogens Rhizoctonia-like isolates no. 1 and no. 8 and Sclerotium sp.. Crude garlic extract Allium sativum was found most effective aginst Azolla pathogens. Other plant extracts were particularly effective against specific fungal pathogen tested. All extracts at 1:1 concentration sulasi Ocinum santum was found quite effective on Rhizoctonia-like no. 111; black pepper Piper nigrum was very effective on Rhizoctonia-like no. 8 while bunlao Justicia gendarusa and talisay Terminalia catappa were quite effective on the same isolate. Kalachuchi Plumiera acuminata and tsaang gubat Jatropa curcas were quite effective on Sclerotium sp. Since garlic was found to be the most effective plant extract against all Azolla pathogens it was prioritized for testing its protective and eradicative effects in the greenhouse. Results of the protective and eradicative effects of the garlic extracts on various Azolla pathogens showed that it has a better eradicative than a protective effects.

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Abstract

Plant species reported to have medicinal value and fungicidal properties on other fungal genera were collected and extracted using water. Crude water extracts of 7 out of 127 plant species screened in vitro for their fungicidal properties showed inhibitory activity against Azolla pathogens Rhizoctonia-like isolates no. 1 and no. 8 and Sclerotium sp.. Crude garlic extract Allium sativum was found most effective aginst Azolla pathogens. Other plant extracts were particularly effective against specific fungal pathogen tested. All extracts at 1:1 concentration sulasi Ocinum santum was found quite effective on Rhizoctonia-like no. 111; black pepper Piper nigrum was very effective on Rhizoctonia-like no. 8 while bunlao Justicia gendarusa and talisay Terminalia catappa were quite effective on the same isolate. Kalachuchi Plumiera acuminata and tsaang gubat Jatropa curcas were quite effective on Sclerotium sp. Since garlic was found to be the most effective plant extract against all Azolla pathogens it was prioritized for testing its protective and eradicative effects in the greenhouse. Results of the protective and eradicative effects of the garlic extracts on various Azolla pathogens showed that it has a better eradicative than a protective effects.

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Item Type:	Proceedings Paper
Additional Information:	Summary En
AGROVOC Term:	EXTRACTOS VEGETALES
AGROVOC Term:	ENFERMEDADES DE LAS PLANTAS
AGROVOC Term:	AZOLLA
Geographical Term:	MALAYSIA
Depositing User:	Ms. Norfaezah Khomsan
Last Modified:	24 Apr 2025 05:26
URI:	http://webagris.upm.edu.my/id/eprint/15197

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