You're totally right about the root veg (and I assume peanuts counts as a root veg in this context).

I meant to say cereal instead of wheat which would have caught oats and barley and some specialty cereals. Beans/pulses generally use the same machinery as cereals.

Definitely didn't mean to include tomatoes, lettuce & spinach, though. I know those are partially mechanized, but don't they still include a large unskilled labor component? Or am I out of date?