Which disease was historically associated with Fusarium patch?

Which disease was historically associated with Fusarium patch?

• A. Summer patch
• B. Necrotic ring spot
• C. Brown patch
• D. Pythium blight

Answer: (A)

This question tests how historical turf disease names relate to current taxonomy. Fusarium patch was the old name used for what is now called Summer patch. In the past, both names described a similar problem in warm-season and cool-season grasses, but as taxonomy clarified, the disease we now call Summer patch is recognized as caused by Magnaporthe poae, not by Fusarium. So the historical reference to Fusarium patch specifically points to Summer patch.

The other diseases listed are different problems caused by distinct pathogens with their own naming histories (Pythium blight by Pythium species, Brown patch by Rhizoctonia solani, Necrotic ring spot by Ophiosphaerella korrae). They don’t share the historical naming link with Fusarium patch, which is why Summer patch is the best answer.