Cotton
Dry rice, I am doing the MESAS Science contest and found it, I hope I win!!!!!!!!!!!!!!
cash crop
Amaranth is the only commercially grown "ancient" crop that I have heard of that is native to North America. It is high-protein and contains lysine. The things you learn dating a vegetarian...
No oranges are not the only crop grown in Florida. They also grow: sugar, citrus, lettuce, tomatoes, peppers, and cucumbers, along with melons and potatoes.
The only commercially grown Australian native nut is the Macadamia Nut.
Yes , but only one season, or crop, per year.
rice
It is the only US State that grows coffee on a commercial basis.
Tobacco. It was not only a cash crop it was also used as the coin of the realm.
Planatations i think. If not, sorry I didn't help
Indigo flowers, were a popular dye in the late 1700's and early 1800's South Carolina made a HUGE profit off of this popular dye and was said to be the "only" thing to grow if you wanted money.
Example is that much of the corn grown in the US is grown as the only crop grown on a piece of land year after year. There is no crop rotation with other crops, so the land becomes depleted of nutrients that corn uses, and more dependent on fertilization, more dense, and lacking of forms of life.