Corn is an annual agricultural plant, especially in the unsaturated oil group, that can be grown in very humid climates.

The biological value of lysine and tryptophan protein in maize is also under the limiting effect of amino acids.

Crude oil in its grain is the nutrient that gives the highest value after oats.

It originates from Mexico and Central America. Classification is made by looking at the shape of the ear, the size of the grain, the spacing between the rows, the color of the space at the tip of the cob.