A grain crop. Wheat is actually a type of grass, though a much different species than that you use for your lawn.
The chief crop in Asia (India China Japan etc) is paddy/rice. It requires a lot of water and a warm climate which is why it is only grown in summers.
wheat
legumes
wheat, bulgar, quinoa
Growing Organic Seeds and Grains
Riceland Foods' Rice Production
Very Particular Produce
The Production of Sorghum