Tropical Plant Pathology (2008) 33, 326-330

Ivan H. Fischer, Leonardo Toffano, Silvia A. Lourenço, Marcel B. Spósito and Lilian Amorim (2008)
Incidência de mancha preta em frutos cítricos em diferentes etapas de beneficiamento em packinghouses e na Ceagesp SP
[Incidence of black spot in citrus fruits from different processing stages in packinghouses and from São Paulo's wholesale market]
Tropical Plant Pathology 33 (4), 326-330
Abstract: The purposes of this work were a) to evaluate citrus black spot (CBS) incidence in 'Valência' oranges and 'Murcott' tangors aimed at the export market, and in 'Pêra', 'Lima' and 'Natal' oranges, and 'Murcott' tangors, aimed at the domestic market after different processing stages in packinghouses in 2004/05 and 2005/06; b) to evaluate CBS incidence in 'Pêra' and 'Lima' oranges and 'Murcott' tangors sold at Ceagesp-SP, the biggest wholesale market in the State of São Paulo, in 2006. Citrus fruits were collected at the packinghouse, on their arrival, after pre-washing and de-greening, from the packing table, from the pallet and at Ceagesp. They were stored for 14 to 21 days at 25ºC and 85-90% RH. The incidence of CBS was visually evaluated after one day and at the end of the storage period. CBS incidence in fruits aimed at the export market decreased, with values under 2.0% on arrival and no CBS symptoms observed on fruits from the pallet. The average incidence of CBS in 'Pêra', 'Lima' and 'Natal' oranges, and 'Murcott' tangors in the packinghouse aimed at the domestic market were 64.1, 39.0, 32.1 and 19.3%, respectively, after one day of storage, then remaining constant in all processing stages. The incidence of CBS in Ceagesp fruits was low in winter months and increased in the spring. The increase in disease incidence during the storage period (21 days) was not significant in collected fruits.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
(original language: Portuguese)
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Database assignments for author(s): Marcel B. Sposito, Lilian Amorim

Research topic(s) for pests/diseases/weeds:
surveys/sampling/distribution

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Phyllosticta citricarpa	Citrus (genus)	Brazil (south)