Efficacy of tolcolfos-methyl on tomato stem rot caused by Sclerotium rolfsii Sacc.
1997
Wirasak Saksirirat | Phonphan Phromsathian | Niwat Sanomuang | Anuchit Warinsathian (Khon Kaen Univ., Khon Kaen (Thailand). Faculty of Agriculture. Dept. of Plant Pathology)
Fungicide tolcolfos methyl was able to inhibit the disease incidence and pathogenicity of stem rot causal agent of tomato, Sclerotium rolfsii Sacc. Under screen-house and field conditions, using tolcolfos-methyl 750 mg/l showed the disease incidences 6.2 and 18.7 percent while in control treatment disease incidences were 93.7 and 83.3 percent respectively. Compared with pentachloronitrobenzene (PCNB) 500 mg/l, the tolcolfos-methyl was more effective than those PCNB according to disease incidences that were 87.5 percent in screen-house and 75 percent in field experiment. The result suggested that disease incidence of stem rot of tomato can be reduced by soil drench of tolcolfos-methyl 750 mg/l.
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