Top-dressing creeping bentgrass with sand-cornmeal or chopped grain colonized by fungi or bacteria was tested as a means of suppressing the intensity of epidemics of dollar spot disease incited by Sclerotinia homoeocarpa. In a greenhouse, 45- to 90-day-old turfgrass grown in cups was top-dressed with 1,500 cm 3 /m 2 of sand-cornmeal infested by myceliumof S. homoeocarpa, followed by an equal amount of sand-cornmeal infested by potential antagonists. Four of 24 potential antagonists inhibited the growth of S. homoeocarpa and suppressed disease by 25-90% (...)
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Doug Goodman (1991) studied this question.