Efficacy of plant extracts for anthracnose control in bell pepper fruits under controlled conditions

Author:

Alves Kézia F1,Laranjeira Delson1,Câmara Marcos PS1,Câmara Cláudio AG1,Michereff Sami J1

Affiliation:

1. Universidade Federal Rural de Pernambuco, Brasil

Abstract

Anthracnose is an important disease of bell pepper (Capsicum annuum) in Brazil and worldwide. This research investigated the efficacy of plant extracts for control of this disease in bell pepper fruits caused by Colletotrichum acutatum under controlled conditions and analyzed the best treatments in relation to different extract and inoculum concentrations, pathogen isolates, and temperatures. In the preliminary screening, among aqueous or ethanolic extracts of 16 plant species evaluated, the best were 6% aqueous garlic, mallow, and ginger extracts, which reduced disease severity by more than 97%. Garlic extract required the highest concentrations to reduce severity by 75% (CL75) when compared to ginger and mallow extracts, but exhibited the best efficacy in relation to different inoculum concentrations and isolates of C. acutatum. It was also able to maintain greater than 90% efficacy at 20-30oC. The garlic aqueous extract effectively controlled anthracnose caused by C. acutatum in bell pepper fruits under controlled conditions.

Publisher

FapUNIFESP (SciELO)

Subject

Horticulture,Plant Science,Soil Science

Reference27 articles.

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2. Botanicals for control of anthracnose of bell peppers;AJITH OS;The Journal of Plant Protection Sciences,2012

3. Recomendações de manejo da antracnose do pimentão e das pimentas;AZEVEDO CP,2006

4. Fungitoxicity of Cymbopogon citratus and Cymbopogon martinii on Colletotrichum gloeosporioides in bell peppers fruits;CARVALHO JB;Revista Brasileira de Plantas Medicinais,2008

5. Adaptação patogênica de isolados de Colletotrichum gloeosporioides obtidos de frutos de jiloeiro, pimentão e berinjela;FERNANDES MCA;Summa Phytopathologica,2002

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