Noun
English Wikipedia has an article on:leaf spotWikipedia
leaf spot (uncountable)
(phytopathology) Any of various fungal or bacterial diseases of plants that cause blemishes on their leaves.
leaf-spot (uncountable)
Alternative spelling of leaf spot
leaf-spot
At V7, you may start scouting for some of the foliar diseases such as northern corn leaf blight, which is more common in cooler weather, and gray leaf spot. Source: Internet
Fungal infections such as gray leaf spot, northern corn leaf blight, and rust typically do not enter the plant via an injury, but the damage may affect the plant’s ability to resist these diseases. Source: Internet
Some diseases, such as frogeye leaf spot, overwinter on crop residue. Source: Internet
The results were impressive, he says, with higher corn yields and less pressure from gray leaf spot. Source: Internet