Date palm - Wikipedia Date palm - Wikipedia

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Natural pollination occurs with about an equal number of male and female plants.

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There is archeological evidence of date cultivation in Mehrgarh around BCE, a Neolithic civilization in what is now western Pakistan. Since the males are of value only as pollinators, this allows the growers to use their resources for many more fruit-producing female plants.

Some growers do not even maintain any male plants, as male flowers become available at local markets at pollination time. Dates contain a single stone about 2—2.

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Dates are naturally wind pollinatedbut in both traditional oasis horticulture and in the modern commercial orchards they are entirely pollinated manually. The soil should also be free from calcium carbonate.

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Date palms require well-drained deep sandy loam soils with pH There is archaeological evidence of date cultivation in eastern Arabia between and calBC. Plants grown from cuttings will fruit 2—3 years earlier than seedling plants. The date palm is dioecioushaving separate male and female plants.

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Date palms can take 4 to 8 years after planting before they will bear fruit, and start producing viable yields for commercial harvest between 7 and 10 years. Fossil records show that the date palm has existed for at least 50 million years.

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Fresh dates, clockwise from top right: The soil should have the ability to hold the moisture. In order to get fruit of marketable quality, the bunches of dates must be thinned and bagged or covered before ripening so that the remaining fruits grow larger and are protected from weather and pests such as birds.

The Ancient Egyptians used the fruits to make date wineand ate them at harvest.

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The type of fruit depends on the glucosefructoseand sucrose content. Evidence of cultivation is continually found throughout later civilizations in the Indus Valley, including the Harappan period to BCE. Manual pollination is done by skilled labourers on laddersor by use of a wind machine.

Most commercial plantations thus use cuttings of heavily cropping cultivars.

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However, with assistance, one male can pollinate up to females. Genome[ edit ] Ina team of researchers at the Weill Cornell Medical College in Qatar published a draft version of the date palm genome Khalas variety.

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Three main cultivar groups of date exist: A date palm cultivarprobably what used to be called Judean date palmis renowned for its long-lived orthodox seedwhich successfully sprouted after accidental storage for years.