Related Clues:

• Fungus turning to ashy colour's not unknown
• One across disease of rye
• Rye fungal disease
• Disease of grasses caused by fungi
• Disease of rye
• Monarch contracted disease
• Fungal disease of rye
• Fungal disease requires a bit of work and occupational therapy
• Obtained support for royal fungus
• Fungi
• Problem with cereal crop -- hence end of wheat?
• Fungus that affects rye
• Killer of grain
• Crop hazard
• Problem for grain growers