The disease often occurs from the end of the rainy season to summer. Orange masses of spores are formed on the lesion under wet conditions and they disperse by wind and rain. The fungal tissues, setae, are produced in the center of the old lesion and looks black moldy. The lesions are at first water-soaked small spots and then expands to ash white to drab, long oval to spindle shaped ones of 5-10mm in length and 2-4mm in width. Spot-causing fungal disease which causes summer depression of grasslands in the warm regions.
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