Diagnosis Complete
Corn Smut (Ustilago maydis)
Analyzed April 29, 2026
Primary Diagnosis
Corn Smut (Ustilago maydis)
moderate
Confidence92%
Diagnostic note
Classic presentation of Ustilago maydis with characteristic tumor-like galls replacing corn kernels. The silvery-gray coloration and swollen, irregular masses are pathognomonic for corn smut. Galls appear to be maturing but membrane is still intact - once ruptured, black teliospores will be released. Note: In Mexico, this condition is known as huitlacoche and is considered a culinary delicacy when harvested at the right stage.
What the AI detected
- gray-white galls on ear kernels
- swollen distorted kernels
- silvery-gray membrane covering galls
- partially exposed yellow kernels
- dried brown husks pulled back
Alternative possibilities
#1Corn Smut (Ustilago maydis)
92%#2Common Smut secondary infection
5%#3Fusarium Ear Rot
3%Treatment plan
- 1Remove and destroy infected ears immediately
- 2Do not compost infected material - burn or bag for disposal
- 3Avoid mechanical injury to plants during cultivation
- 4Rotate crops for 2-3 years away from corn
Treatment guidance informed by published plant pathology research.
Treatment informed by peer-reviewed plant pathology research · Explore studies at consensus.app