I think hemp has quite a high yield/acre compared to most other food plants, not sure if it has the highest though.
hay
If someone had a clue. They would definately answer your question.
a substance crop is freshly grown wash and eaten , a cash crop is applied with chemicals
Almost without exception, rice is the number-one crop grown in Asia. It serves as a staple food for a large portion of the population, providing essential carbohydrates and nutrients. The diverse climates and abundant water sources across the continent support extensive rice cultivation, making it a crucial part of both the economy and culture in many Asian countries.
cotten
Tobacco, Indigo, and Rice.
The number one crop grown in North Dakota is wheat, especially durum wheat which is used to make pasta. Other crops grown in North Dakota used for food are sunflowers, soy beans, sugar beets, beans (dry), potatoes, and oats.
The main crop grown by Native American tribes varied depending on the region, but one of the most important crops was maize (corn). Maize was a staple food source for many tribes and played a significant role in their diet and culture.
One mono-crop production (a single commodity, such as sugar)
Yes , but only one season, or crop, per year.
they are grown together since the nutrient needs of one crop are fulfilled by the other crop. therefore these are grown together
tobacco