Aspect of Incidence of the Major Citrus Diseases Recently

Abstract

The percent of diseased fruit by Elsinoe fawcettii was the most 0.72% in 2004, and then gradually decreased to 0.08% in 2008, and the average was from 0.28% from 2004 to 2011. In case of canker by Xanthomonas citri subsp. citri, the percent of diseased fruit was the most 2.19% in 2004, and gradually decreased to 0.08 and 0.10% in 2009 and 2010, respectively. The average was 0.81% from 2004 to 2012. The melanose by D. citri was most in south-east area of Jeju Island, and east and west in case of canker. The melanose symptoms were initially appeared from mid June, mainly peaked late of July to late August. The canker symptoms were initially produced on leaves of natsudaidai and grapefruit cultivated in open field middle of June in 2010 and 2011 and late of May in 2012. The scab disease was firstly appeared approx. early or mid May and then rapidly increased late of May to middle of June. The inoculum was mainly produced from dead twigs late June to early of August.

Improvement of Control Efficacy of Mancozeb Wettable Powder against Citrus Melanose by Mixing with Paraffin Oil

“…, 6 8 (Hyun , 2013). , , (Bruhn , 1982;Eife , 2002;Hunsche , 2007;van Bruggen , 1986) 197 (Bruhn , 1982;Eife , 2002;Kudsk , 1991;van Bruggen , 1986).…”

Development of Molecular Marker to Detect Citrus Melanose Caused by Diaporthe citri from Citrus Melanose-like Symptoms

“…Citrus melanose disease caused by Diaporthe citri is one of the major citrus diseases ( Hyun et al, 2013 ). Melanose does not affect the pulp quality of fruit but damages the surface of the rind, reducing fruit quality and marketability.…”

Suppression of Melanose Caused by Diaporthe citri on Citrus Leaves Pretreated with Bio-sulfur

“…Increase of citrus cultivation has resulted in high density of trees in a farm, thus increasing the risk of melanose epidemic (Kwon et al, 2003). Melanose has decreased income by 8.5% due to reduced quality of fruits in commercial market (Hyun et al, 2013). …”