抄録
Many plant diseases in Japanese flower production have been spread through the global distribution of seeds, cuttings and plantlets, diversification of flower species usage, and inappropriate cultivation environments. Demands for the implementation of technologies developed for reducing the volume of agrochemical applications are increasing. This article reviewed individual techniques of IPM including biological control, resistant varieties and rootstocks, cultural control such as greenhouse environmental control, small-volume soil medium nutriculture, physical control such as hot water soil sterilization, steam sterilization and soil solarization, soil disinfestation using biological functions, and elimination of water-borne diseases in hydroponics. To promote specific technologies for reducing agrochemicals, we need to assemble them into IPM systems and to demonstrate these systems under commercial field conditions by matching them with local cultivation methods for flower production. In addition, for efficient disease control it is essential to expand the registrations of outstanding effective agrochemicals to many flowering crops. It is necessary for the establishment of these technologies and their manuals on disease-free seedling production to positively conduct collaborative research with experiment institutes, national or prefectural plant protection officers, agricultural extension instructors, growers and especially nursery companies. For promoting IPM in flower disease control, “local plant clinics”, the precise “general diagnosis of diseases” by local plant clinics, and “field charts (agro-medical field records)” will be attractive research fields in the future.
