黒くろ穂ほ病びょう

noun

smut; bunt; dustbrand

A fungal disease of cereal plants, producing black powdery spores on the ears or grains. Technical agricultural term.

• 麦むぎの黒くろ穂ほ病びょうは、穂ほが黒くろい粉こなに覆おおわれる病びょう気きです。

  Wheat smut is a disease where the ears become covered with black powder.