Journal
CROP PROTECTION
Volume 67, Issue -, Pages 96-101Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.cropro.2014.09.016
Keywords
Mangifera indica; Decay; Heat treatment; Fruit firmness; Fruit color
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This study was conducted to revalidate the efficacy of hot water treatment (HWT) as a standard protocol in managing postharvest disease in 'Carabao' mangoes. We elucidated the possible reasons for the inadequacy of HWT in management of anthracnose and stem-end rot. The effect of HWT on the cultures of anthracnose and stem-end rot-causing pathogens and on the overall quality of fruit was examined. The present investigation suggested 53 degrees C for 20 mm as optimal exposure for 'Carabao' mango. At this exposure however, the propagules of Colletotrichum gloeosporioides and Lasiodiplodia theobromae were not totally controlled. HWT was unstable in controlling C. gloeosporioides and L. theobromae as demonstrated by high standard deviation of radial growth. HWT manner of control is fungistatic rather than fungicidal as pathogens developed after treatment. Fungistatic activity of HWT was perhaps inadequate to protect the fruit from decay due to absence of residual action. There were no significant changes in the quality of 'Carabao' mangoes submerged in hot water at 53 degrees C for 20 min whilst the severity of anthracnose was reduced by 48.71%-52.63% and stem-end rot by 48%-60.86%. (C) 2014 Elsevier Ltd. All rights reserved.
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