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Abstract

The best marketable tannia cultivars are very susceptible to the tannia rapid yellowing disease, popularly called "burning disease". On-station and on-farm tests using an improved package of cultivation practices were examined in Dominica. The indications were that the yield of tannia carmela increased dramatically from little or no cormels to about 5-10 tonnes per ha at the minimum level. With the improved package of practice farmers are now able to produce tannia under diseased conditions. Emphasis is placed on site selection, drainage, planting material quality, limited use of fungicides, timely application of fertilizer and the early removal of weeds including diseased volunteer tannia host plants.

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