I only know of two, but the two that I know are...
1) Cotton.
2) Corn.
cotton,corn,watermelon,tomato,and potato
cotton
cotton,corn
watermelon
cotton
cotton
corn
genetics analysis is the important in crop lants genetics analysis is the important in crop lants genetics analysis is the important in crop lants
Cotton.
Coffee is Colombia's most important cash crop.
Wheat is probably Australia's most important crop.
the main cash crop in Texas was Tobbaco and cotton.
Pecans
Cotton.
an important field crop of the Great Lake region
Cotton is a major crop grown in most parts of Texas along with wheat...rice is heavily grown on the gulf coast of Texas and down in the valley citrus is wide spread.