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-Early man lived on wild game, leaves, roots, seeds, berries, and fruits.
-As the population increased, the food supply was not always sufficiently stable or plentiful to supply his needs.
-This probably led to the practice of crop production.-The art of crop production is older than civilization.
-Crop production began at least nine thousand (9000) years ago when domestication of plants became essential to supplement natural supplies in certain localities.
-All Modern cultivated crops were domesticated from wild species in order to meet man’s demand since the pre-historic time.
-Homo sapiens did not practice agriculture until approximately 13000 years ago, even though the modern form of humans appeared approximately 50000 years ago.
-The domestication of crops by humans began in what is called Fertile Crescent on the western edge of modern Iran, initially called Tigris River and is the cradles of agriculture.
-Agriculture was also invented independently at several other locations in the world including Africa, Asia, China, India, japan, Mesoamerica, South America and eastern US and are referred to as the centers of origin of various annual crops that were self-pollinating and polyploidy.
-The act of planting and harvesting plants dramatically altered the genetic and physiological makeup of crop species due to conscious and unconscious selection. Such changes include non-shuttering of seed pods, seed retention, growth patterns (more of determinate growth), uniformity of ripening and levels of seed production (size and number).
-During the domestication process, levels of genetic variations were dramatically reduced and humans selected a narrow range of plant types.
The essential features of crop production have remained almost unchanged since the dawn of history.
Titany answered the question on August 16, 2021 at 06:33