Lesions will be narrower, shorter and darker on resistant cultivars. In 1995-96 Narrow Brown Spot attacked the panicles of several rice varieties and the symptoms were very similar to blast. However, the lesion was a brownish color. Cypress variety was the most susceptible variety observed. The Extension Service publishes the Narrow Brown Spot reaction of the varieties grown in Mississippi.
Resistant varieties are the best method of control.
Check with Extension Service for current foliar fungicide recommendations.