Occurrence of Diseases and Case of Clinical Diagnosis on Watermelon in South Korea, 2008-2012

Abstract

The socio-network activities for regional governments, agricultural research institutes, developing agencies and policy makers of any countries are very crucial and important to take into account the root cause of current problems faced by farmers. The survey was conducted in South Korea during the period January, 2008 to August, 2012 in order to shed light on prevalence of different diseases on watermelon in different regions and to better understand farmers' knowledge and perceptions for following watemelon's growing procedures and practices. A total of 590 cases were reported on 573 watermelon growers with highest 87.1% in Jeonbuk, 4.7% in Jeonnam, and 8.2% in other regions such as Gyeongbuk, Gyeongnam, Chungnam, Gwangju, Gyeonggi, Daegu, Gangwon, Changwon and Seoul. The maximum percentages of cases recorded were related to diseases and insect pest (38.6%) followed by physiological disorder (29.7%), cultural practices (18.8%), soil and fertilizer (9.0%), herbicide (2.9%) and others (1.0%). It was observed that the manifestation aspects of the diseases were changed due to increasing in proportion of 'in-facility' cultivation to 12,995 ha compared to 'open-field' cultivation (2,722 ha). The present survey revealed the necessity to reduce the damages incurred at watermelon farms as soon as possible through the breeding program to develop resistant cultivar, use of pathogen-free propagating plants, and efficient prevention of pathogen by regular monitoring of watermelon plants at farms.

Biological Control of Bacterial Fruit Blotch of Watermelon Pathogen (Acidovorax citrulli) with Rhizosphere Associated Bacteria

“…In recent years, it was found that bacterial diseases were on rise due to abnormal rainfall and high fluctuating temperature, and constitutes serious constraints in watermelon production (Noh et al, 2014). The degree of infection varied with the cultivars, and use of resistant cultivars was an effective means of preventing the occurrence of disease (Hopkins et al, 1993).…”

“…In recent years, it was found that bacterial diseases were on rise due to abnormal rainfall and high fluctuating temperature, and constitutes serious constraints in watermelon crops. Bacterial fruit blotch (BFB) caused significant loss in production of watermelon during 2011–2012 in Korea (Noh et al, 2014). …”

Characterization, identification and expression profiling of genome-wide R-genes in melon and their putative roles in bacterial fruit blotch resistance

“…Bacterial fruit blotch (BFB) is a devastating disease of melon caused by Acidovorax citrulli, an aerobic, mesophilic, gram-negative, rod-shaped seedborne bacterium belonging to the beta subdivision of the Proteobacteria [9]. BFB has been reported in many countries and poses a serious threat to melon, as well as other cucurbit crops including prickly paddy melon, citron melon, cucumber, pumpkin, squash, several types of gourds, and watermelon [10][11][12][13][14][15][16]. BFB causes watersoaked lesions to form on cotyledons and leaves, leading to collapse and death.…”

Characterization, Identification and Expression Profiling of Genome-Wide R-Genes in Melon and Their Putative Roles in Bacterial Fruit Blotch Resistance

“…BFB disease is caused by Acidovorax citrulli, an aerobic, mesophilic, gram-negative, rod-shaped seed-borne bacterium belonging to the beta subdivision of the Proteobacteria [9]. BFB has been reported in many countries and poses a serious threat to melon, as well as other cucurbit crops including prickly paddy melon, citron melon, cucumber, pumpkin, squash, several types of gourds, and watermelon [10][11][12][13][14][15][16]. BFB causes water-soaked lesions to form on cotyledons and leaves, leading to collapse and death.…”