, two different varieties of corn. Fields of corn that will be detasseled are planted with two varieties of corn. Removal of the tassels from all the plants of one variety leaves the grain that's growing on those plants to be fertilized by the tassels of the other, with the result a hybrid. In addition to being more physically uniform, hybrid corn produces dramatically higher yields than corn produced by open pollination. With modern seed corn, the varieties to hybridize are carefully selected s… (More on Detasseling)