Complex sentence: If these lands have a specialty, it is for grass; all kinds of grass grow luxuriantly, producing from 2 to 2 1/12 tons per acre, which readily markets at from $12 to $20 per ton.
Split into simpler sentences: If these lands have a specialty, it is for grass. All kinds of grass grow luxuriantly, producing from 2 to 2 1/12 tons per acre, which readily markets at from $12 to $20 per ton.