AgriCraft Seed Breeding
Breeding a 10×10×10 AgriCraft Seed without the leveling up grind.
This has been tested in a few modpacks but primarily relies on a setting in the AgriCraft config.
** This appears to have been patched in 1.12 modpacks and no longer works. **
With "Valid parents" set to 2 (Mutation parents and identical crops) you can use adjacent identical crops to boost the level of the cross-breed plant.
The same technique can be employed with just two pairs of 10×10×10 parents and one 5×5×5 child in a 2×3 grid but the chances are reduced.