Ergot may also affect Redtop, oats, grasses, and grains.
"Special Report on Diseases of Cattle"
U.S. Department of Agriculture J.R. Mohler
Rhode Island Bent, known as Redtop, is less exacting, and where it thrives to the exclusion of timothy, or is in evidence in grass lands, the inference is fairly safe that a test would show that the soil is sour.
"Right Use of Lime in Soil Improvement"
Alva Agee
Flint went up to one of them and said, Redtop, my boy wants to make axes.
"The Cave Boy of the Age of Stone"
Margaret A. McIntyre