CONTROL OF FUSARIUM AND PENICILLIUM ROTS OF IRIS, TULIP AND NARCISSUS WITH THIABENDAZOLE AND BENOMYL 1)

Ch.J. Gould, V.L. Miller
Thiabendazole and benomyl effectively controlled Fusarium oxysporum rot of iris, tulip and narcissus. Optimum results required soaking bulbs within 48 hours after digging using at least 1000 ppm at 20°C for 30 minutes. Adjuvants improved control. Dusting bulbs was often effective. Heavy applications to bulbs or soil were therapeutic. Both fungicides controlled Fusarium during the hot water treatment for nematodes in iris. Proper storage of treated bulbs was essential to control Penicillium corymbiferum rot. Best storage of retarded iris bulbs was 30°C and > 95% RH for 1–2 days before cleaning and treating, followed by storage at lower relative humidity.
Gould, Ch.J. and Miller, V.L. (1971). CONTROL OF FUSARIUM AND PENICILLIUM ROTS OF IRIS, TULIP AND NARCISSUS WITH THIABENDAZOLE AND BENOMYL 1). Acta Hortic. 23, 178-186
DOI: 10.17660/ActaHortic.1971.23.28
https://doi.org/10.17660/ActaHortic.1971.23.28

Acta Horticulturae