Forest Preserve District of Cook County, Illinois
Nature Bulletins
Newton Home Page

Introduction and Instructions

Search Engine

Table of Contents

Copyright

Disclaimer

Corn
Nature Bulletin No. 118   May 31, 1947
Forest Preserve District of Cook County
William N. Erickson, President
Roberts Mann, Supt. of Conservation

CORN
Corn, or maize, has never been found growing wild. Columbus found it being grown by the Carib Indians and called it " Mahiz". The Aztecs told Cortez it was a gift from their gods, but the Mayas and the Incas already had been growing corn for thousands of years. Teosinte, a coarse native Mexican grass, appears to be its closest relative and its origin was probably in Central or South America. Our first colonists planted seed obtained from the Indians and, "corn" being the English word for all grain, called this strange new plant "Indian corn".

Without man' s help, corn soon would disappear. Each year the seed must be carefully selected, carefully planted, and the soil kept cultivated to remove competition from other plants. Modern scientific breeding has produced varieties remarkable for their rapid growth, uniform size and heavy yield.

Unlike other grasses and grains, corn bears two different flowers on the same stalk. The tassel at the top is the male flower. It sheds pollen on the ears, the female flowers down on the stalk, each tufted with the sticky ends of many threads of " silk" . At the inner end of each thread, fertilized by one microscopic grain of pollen, a kernel develops. The mature ear is a compact mass of solid kernels in parallel rows upon the central cob.

Corn is now grown in temperate climates all over the world. Three billion bushels per year are produced in the United States, three- fourths of it grown in eight middle western states of the Corn. Belt. It is by far our greatest crop in acreage, bulk and value. Four-fifths of it is fed to livestock. A small percentage is used to make hominy grits! corn meal and breakfast foods. Most of the remainder is processed into sugars, oils and starches. About 80 percent of the solid matter in a kernel is starch and more than 30 big industries, including alcohol, cotton goods, steel, explosives, candies, and adhesives depend upon refined corn starch. The germ yields oil for cooking, oleomargarine, soaps and glycerin. The production of penicillin, sulfa tablets and other vital medicines depend upon corn. The cobs are used for pipes and plastics; the stalks for paper and wallboard.

Upon this plant of unknown origin rests the prosperity of this nation.


To return to the Nature Bulletins Click Here!
Hosted by NEWTON

NEWTON is an electronic community for Science, Math, and Computer Science K-12 Educators, sponsored and operated by Argonne National Laboratory's Educational Programs, Andrew Skipor, Ph.D., Head of Educational Programs.

For assistance with NEWTON contact a System Operator (help@newton.dep.anl.gov), or at Argonne's Educational Programs

NEWTON AND ASK A SCIENTIST
Educational Programs
Building 360
9700 S. Cass Ave.
Argonne, Illinois
60439-4845, USA
Update: June 2012
Sponsered by Argonne National Labs