Bagging time of ‘Prata-anã’ banana regarding anthracnose control

Martielle Batista Fernandes,Regina Cássia Ferreira Ribeiro,Gisele Polete Mizobutsi,Edson Hiydu Mizobutsi,Danilo Batista Pinho,Maria Luisa Mendes Rodrigues

doi:10.1590/0100-29452019066

Martielle Batista Fernandes, Regina Cássia Ferreira Ribeiro + Show 4 more

Open Access

https://doi.org/10.1590/0100-29452019066

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Abstract

Abstract The aim of this work was to determine the bagging time of ‘Prata Anã’ banana in order to reduce anthracnose disease. Treatments consisted of protection of banana bunches with TNT bags at emission, 30, 60, 90 and 120 days after emission and of unpacked bunches. Fruits were collected, stored in refrigeration chamber (25 ± 1 °C and 80 ± 5% RH) and evaluated for anthracnose incidence and severity. The study design was completely randomized with six treatments, repeated over two years. Data were submitted to analysis of variance and Tukey test (p <0.05). The physical and chemical characteristics of stored fruits were evaluated every three days for 12 days. The study design was completely randomized with six treatments, four evaluation periods, repeated over two years. Results were submitted to analysis of variance and regression (p <0.05). The anthracnose incidence was reduced by up to 67% by bagging bunches at emission. Bunches bagged at emission and at the first month of development did not show anthracnose severity. Bagging bunches reduces anthracnose incidence and severity. The bagging time does not interfere with the physical and chemical characteristics of fruits.

Highlights

Several fungal diseases can occur in banana during the post-harvest phase
Fungicide prochloraz has been banned from the Brazilian market, further restricting available products
Given the considerable post-harvest losses caused by C. musae in banana and the need for studies on factors related to the host that condition these losses, the aim of this work was to determine the bagging time of banana ‘Prata Anã’ cultivar to reduce infection by C. musae, without changes in the physical and chemical characteristics of the bagged fruit

Summary

Introduction

Anthracnose, caused by Colletotrichum musae (Berk & Curt.) von Arx, is responsible for great production losses of up to 40%, affecting fruit quality (CORDEIRO et al, MIRSHEKARI et al, 2012). The importance of this disease is related to the frequency with which it appears, mainly, in domestic trade conditions in which little care is taken (COELHO et al, 2010). Fungicide prochloraz has been banned from the Brazilian market, further restricting available products In this sense, there is a need to search for alternative methods of post-harvest disease control (BARBOSA et al, 2015)

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