Multiple choice Which of the following pairs of ‘cotton diseases - causing fungi’ is not correct? Lint contamination - Aspergillus flavus Powdery mildew - Oidiopsis gossypii Stem canker - Ramularia gossypii Black root rot - Chalara elegans Anthracnose - Colletotrichum gossypii Reveal answer Fill a bubble to check yourself C Correct answer Explanation Stem canker of cotton is caused by Phoma exigua fungus. Ramularia gossypii causes aereolate mildew disease of cotton.