Effect of Castor Bean Oil on Post Harvest Fungal Pathogen of Coconut: Lasiodiplodia theobromae

Henrique, Dias dos Santos

doi:10.4172/2329-955x.1000108

J Plant Physiol Pathol

2013

DOI: 10.4172/2329-955x.1000108

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Effect of Castor Bean Oil on Post Harvest Fungal Pathogen of Coconut: Lasiodiplodia theobromae

Dias dos Santos Henrique¹

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2016

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“…Plant disease control studies suggest that the contribution of diagrammatic scale is essential to compare the efficiency of products, such as the ones used as barriers to the fungus. In vitro evaluation of L. theobromae control has been promising, as well as using synthetic fungicides (Locatelli et al, 2015) or natural products with little toxicity to the environment (Freire et al, 2013). However, studies of basal rot severity on coconut fruits have not been made because of the lack of tools to enable an ease and practical evaluation of the disease evolution and postharvest control.…”

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Evaluation of Postharvest Stem-End Rot on Coconut Fruits

Mussi‐Dias¹,

Freire²

2016

JAES

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The stem-end rot on coconut fruits is the main postharvest crop disease, causing heavy losses especially when the product is sold fresh. The efficient and practical control of this plant disease has been difficult to date, such as the damage evaluation, which has been done exclusively by the incidence of the disease. However, the incidence parameter alone does not provide a satisfactory understanding of the lesion area and the intensity it can achieve during the storage period, and about the environmental conditions in which the fruits are subjected to the aggressiveness of Lasiodiplodiatheobromae, when it is confirmed as the causal agent of the disease, and the control measures applied. Thus, in this study we propose to evaluate the basal rot development in coconut fruits during postharvest and to prepare and validate a diagrammatic scale to enable the estimation of disease severity. Fruits were inoculated and the external and internal symptoms of disease developments were photographed to measure the damaged area, which were grouped into eight disease levels. Sixty images were assessed by 30 evaluators for three consecutive times at intervals of 7 days and data were subjected to linear regression analysis. Hence, it was possible to create and validate a diagrammatic scale to evaluate the disease severity on coconut fruits with an accurate, precise and reproducible manner. Furthermore, the proposed scale allowed us to distinguish the aggressiveness of different isolates of the fungus through the symptoms of internal fruit rot.

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Evaluation of Postharvest Stem-End Rot on Coconut Fruits

Mussi‐Dias¹,

Freire²

2016

JAES

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Effect of Castor Bean Oil on Post Harvest Fungal Pathogen of Coconut: Lasiodiplodia theobromae

Cited by 1 publication

References 31 publications

Evaluation of Postharvest Stem-End Rot on Coconut Fruits

Evaluation of Postharvest Stem-End Rot on Coconut Fruits

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