Related Clues:
- Bane of cereal grain
- Cereal grain killer
- Soot, dirt, grit
- Rye blight
- X-rated literature
- Obscene word(s)
- Unlikely book club recommendation
- Fungus that attacks grains
- Grain farmer's headache
- Soot; obscenities
- Tiny bit of black and blue material
- Cereal grass disease
- Sooty deposit
- Concern for wheat farmers
- Filth from backfiring food processors?