HORTOFAN: A GROWING MEDIA FOR SUPPRESSING SOIL-BORNE PATHOGENS ON POTTED TOMATO AND CUCUMBER PLANTS

摘要

Suppressive composts are generally applied as soil improvers, while it is necessary to develop specific compost based growing media for applications on potted plants. The aim of this research was to evaluate the suppressiveness of the compost based growing media "Hortofan". Suppressiveness was tested in greenhouse on potted plants against Pythium ultimum on cucumber and Phytophthora nicotianae and Fusarium oxysporum f.sp. lycopersici on tomato. Cucumber and tomato biomass significantly increased up to 40-50% with "Hortofan" compared to control. The number of diseased tomato plants in substrates infested with P. nicotianae was significantly reduced by 40% and the number of diseased cucumber plants by 30% compared to the peat substrate. Fusarium wiltof tomato was reduced by 60% in plants grown on "Hortofan".