Use fungicide mancozeb, carbendazim, captafol, vinclozolin or benomyl as a chemical control. A high rate of potash can reduce intensity of disease. Use of high nitrogen fertilizer is believed to increase intensity of the disease. This is a common problem of Aranda and Mokara, especially those grown on the ground. Roots will turn brown internally and collapse.
Infection then spreads to stem and lower leaves, causing thgem to turn yellow and defoliate.
Protect seedlings from rain by using polyvinyl shelter during rainy season. Isolate or destroy infected plants. For chemical control, the use of thiophanate methyl or benomyl is recommended. Avoid excessive use of organic fertilizer especially mineral manure. Planting media in the pot should be discarded.