Olive trees live longer than most others fruit trees.
Some of the trees brought by the Spaniards to California still alive. There are olive trees in Palestine which probably date back to the beginning of the christian era . The olive tree has many small flowers, most of the flowers are imperfect, and fruit cannot grow from them. They give off much pollen, and , as a rule, the wind carries the pollen from flower to flower. In all the varieties of olive, a tree can fertilize its flowers with its own pollen. In occasional seasons there is evidence that the trees benefit if they receive pollen from other trees. Most varieties do not bear large crops one season after another. There is a slack season in between.
This manner of growth is called alternate bearing. The olive itself is a drupe, the type of fruit which has a pit. It is apple-shaped to plum-shaped, and the ripe fruit is purple to black. The most important material in it is the olive oil . Both seed and flesh contain much oil , which makes up 15 to 30 per cent of the weight of the fresh fruit. Fresh olives have a bitter substance which makes the olive oil bitter. Food plays an important part in the development of nations. In countries where food is scarce, people have to spend most of their time getting enough to eat. This usually slows down progress, because men have little time to devote to science, industry, government, and art. In nations where food is plentiful and easy to get, men have more time to spend in activities that lead to progress, human betterment, and enjoyment of leisure. The problem of providing good food for everybody has not yet been solved.
The FAO helps less developed nations make better use of their natural resources and improve their methods of food production. The organization works for better management of forest and water resources, it also sets up programs to provide information about nutrition. There are many projects carried out by non governative organizations as www.oilea Africana foundation .com that makes possible the production of farm commodities and develop of reforesting with olive trees in north Ethiopia.
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Update to February 2012.
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