Influence of Pythium oligandrum on population of Fusarium oxysporum f.sp. dianthi and development of Fusarium wilt of carnation

Abstract

Relationship between initial oospore number of Pythium oligandrum, mode of the mycoparasite application and populationdynamics of Fusarium oxysporum f.sp. dianthi and development of Fusarium wilt of carnation was studied. Mixing ofoospores with peat 10 days before carnation planting resulted in strong inhibition of the pathogen development. Numberof colony forming units of the pathogen decreased at least 3 times. Application of P. oligandrum resulted in suppressionof Fusarium wilt development, especially when the mycoparasite was applied at dose 100 oospore/g of peat.

Keywords

• carnation
• fusarium
• pythium oligandrum
• oospores
• inhibition
• population
• healthiness