In modern times, horticulture has been separated several fields of specialized interest:
Pomology.
Fruit growing is one of the most ancient of horticulture industries, as
indicated in records of many of the early civilization of the worlds.
In this country, fruit-growing has reached a very intensive stage of
development, from the standpoint of technology.The commercial fruit
industry of the United States, including citrus fruits, apples,
peaches, grapes, pears, strawberries, cherries, plums,
and many others, extends over an area of 6 million ares with an annual
average production in recent years of 20 million tons and a cash value
to the growers in excess of 1000 take million. Tree-nut production
averages annually 25,0000 tons with a cash value to the growers of
90million.
Vegetable
production is also an ancient horticulture enterprise. Aside from home
and marker gardening, vegetable production in the Unites States has been
expanded over tremendous areas with the growing of such crops as
lettuce, tomatoes, melons, onions, cabbage, and many other truck crops,
for shipment railway and truck refrigeration to distant markers. The
commercial vegetable industry
covers approximately 2 million acres with an annual average production
of 10 million tons and a cash value to the growers of 1000000 million.
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