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http://dx.doi.org/10.5423/RPD.2006.12.3.164

Factors Involved with the Incidence of Black Stain in Pear Fruits During Growing Season  

Kim, Jeam-Kuk (Fruit Research Div., National Horticultural Research Institute, RDA)
Park, Young-Seob (Fruit Research Div., National Horticultural Research Institute, RDA)
Seo, Hyeong-Ho (Fruit Research Div., National Horticultural Research Institute, RDA)
Lee, Han-Chan (Fruit Research Div., National Horticultural Research Institute, RDA)
Lee, Jung-Sup (Horticultural Environment Div., National Horticultural Research Institute, RDA)
Publication Information
Research in Plant Disease / v.12, no.3, 2006 , pp. 164-167 More about this Journal
Abstract
Potential factors favoring black stains during fruit development in Pyrus serotina was investigated. Black stain occurred from young fruit till harvest. The color of the affected fruits in early stage was black or light reddish brown, but turned to light brown over time. Fruit bags with lower light transmission and inner bags with poor aeration stimulated the symptoms, and high water permeability of the bags increased the black stain. Much rain and/or poor light transmission and aeration within the canopies also favored the occurrence of black stain. Diminution of pathogenic fungi density by lime sulfur was more effective than the canopy spray of fungicide for the prevention of black stain.
Keywords
Black stain; Fruit bag; Lime sulfur; Pear; Pyrus serotina;
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