Step 1: Purpose of treatment.
Tomato seeds are prone to fungal diseases, hence fungicidal chemicals are applied before sowing.
Step 2: Chemicals used.
- Thiram: A protective fungicide for seed dressing.
- Carbendazim: A systemic fungicide effective against seed-borne fungi.
Step 3: Conclusion.
Thus, the two chemicals are Thiram and Carbendazim.