Bacterial fruit blocth disease, caused by Acidovorax citrulli, is destructive disease of watermelon in Turkey. Control strategies of the disease focus on using pathogen-free seeds. Totally 322 candidate antagonists were isolated form healty watermelon leaves, blossoms and soils in Cukurova region of Turkey. After the in vitro experiments selected 14 antagonists were applied as seed treatments. After the germinations of the treated and un-treated seeds, infected cotyledons were evaluated by 0-7 scales. The antagonist were reduced disease severity and disease incidence from 6 to 94% and from 10 to 93%, respectively.This study demonsrated that antagonists were able to reduce disease occurance and serves as a our first attemps on biological control of watermelon fruit blotch disease for further studies.
Cukurova University - TurkeyLead applicant
Geylani Farm, Misis village - TurkeyInitiative partner
Commercial Nursery - TurkeyInitiative partner
Biological control of bacterial fruit blocth disease of watermelon vıa mıcrobıal antagonists
In the project, watermelon seeds were avoided from contamination of bacterial fruit blotch disease.
This study is economically useful and practical for seed/seedling producers in order to receive healthy seeds.
seed/seedling producing companies and farmers will save money.
Seed companies, commercial nurseries, farmers
Managers are all the seed companies
seedling producers are the competences
slelection of the best antagonists were the difficulty. to overcome this, inhibition zone of beneficial bacteria were tested in laboratory conditions and has chosen the best antagonistic bacteria
Antagonistic bacteria are safe in use despite of treating seeds with hazardous chemicals
the experience can generate results for years when used every growing season.