Control of Macrophomina phaseolina causing charcoal rot of soybean seedling by medicinal plants and fungicides
2004
Mayuree Palaoud(Chiang Mai University, Chiang Mai (Thailand). Faculty of Agriculture. Department of Plant Pathology) | Sombat Srichuwong(Chiang Mai University, Chiang Mai (Thailand). Faculty of Agriculture. Department of Plant Pathology)
Detection of seedborne Macrophomina phaseolina was carried out in soybean 2 cultivars such as SJ.5 and CM. 2, using Blotter Method. Macrophomina phaseolina 3 isolates were found on the seeds, which M. phaseolina isolate 1 could better pathogenicity in both cultivars. The ability tests of medicinal plants 5 types such as Cinnamon, Calamus, Turmeric, Thongphanchang and Ginger to inhibit growth of the fungus pathogen. Results showed that Thongphanchag at 50,000 ppm. Could inhibit growth of fungus better than other treatments. For efficacy tests of 3 types fungicides such as Dithane M-45, Benlate OD and Thysan on growth of the fungus. It was found that Benlate OD gave the best result. Thongphanchang was selected for further study as seed treatment in comparation with Benlate OD for controlling soybean seedling disease. In glasshouse studies, results showed that both Thongphanchang and Benlate OD improved the rate of germination, seedling vigor and reduced abnormal seedling compared to the untreated control.
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