Plant extracts as potential control agents of Black Sigatoka in banana

Kumakech, A and Jørgensen, H J L and Collinge, D B and Edema, R and Okori, P (2022) Plant extracts as potential control agents of Black Sigatoka in banana. Journal of Plant Pathology, 104. pp. 1303-1314. ISSN 2239-7264

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Abstract

Aqueous extracts of Cinnamomum zeylanicum, Capsicum annuum and Azadirachta indica were tested for efficacy for management of Pseudocercospora fijiensis in banana (Musa spp.) when applied as foliar sprays. Extracts of C. annuum and A.indica demonstrated fungicidal effects in vitro, without showing phytotoxic effects. The two extracts protected tissue culture banana plantlets of cultivar Musakala to a similar degree as the traditional fungicide difenoconazole. Extracts of A. indica and C. annuum (0.3 g/ml) reduced Black Sigatoka severity by 69.3% and 65.6%, respectively, and were thus comparable to the fungicide difenoconazole (72.7%). Soil drenching of the extracts did not significantly reduce Black Sigatoka severity. In planta effects of the extracts mainly consisted of delayed symptom appearance and reduced lesion number. Symptom development was dependent on extract concentration and days between extract application and inoculation. Effect of the tested extracts on height of plants and new leaves was not significant. Collectively, our data suggest that A. indica and C. annuum have interesting and unique properties as plant protection agents against Pseudocercospora fijiensis, but further research is needed to investigate their efficacy.

Item Type:	Article
Divisions:	Research Program : East & Southern Africa
CRP:	UNSPECIFIED
Uncontrolled Keywords:	Banana, Mycosphaerella fijiensis, Plant extract, Protection, Pseudocercospora fijiensis
Subjects:	Others > Plant Protection Others > East Africa
Depositing User:	Mr Nagaraju T
Date Deposited:	03 Oct 2023 09:50
Last Modified:	03 Oct 2023 09:50
URI:	http://oar.icrisat.org/id/eprint/12204
Official URL:	https://link.springer.com/article/10.1007/s42161-0...
Projects:	UNSPECIFIED
Funders:	UNSPECIFIED
Acknowledgement:	We thank Makerere University Agricultural Research Institute, Kabanyolo (MUARIK) and the National Agricul- tural Research Laboratories of the National Agricultural Research Organisation (NARO) for offering facilities required to conduct this study. This research was funded by the Danish International Development Agency (DANIDA) project 09-048 LIFE
Links:	Google Scholar

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