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The high humidity encourages the growth of fungal leaf diseases, and the species that are deciduous avoid immediate transfer of fungal spores from old leaves onto new growth. [7] The Pará rubber tree has been introduced to and is naturalised in many tropical countries in Asia. [2] [8]
Hevea brasiliensis, the Pará rubber tree, sharinga tree, seringueira, or most commonly, rubber tree or rubber plant, is a flowering plant belonging to the spurge family, Euphorbiaceae, originally native to the Amazon basin, but is now pantropical in distribution due to introductions.
Climbing the rubber-bearing tree or vine, they slash the bark with two or three V-shaped cuts, one below the other, and then arrange a broad leaf underneath, so as to form a trough. This is to conduct the sap, which oozes out, about the consistency and colour of ideal milk, into a gourd, or preferably, a galley-pot, procured at the station.
A rain tree leaf is pinnate made of 6–16 leaflets, each leaflet is shaped like a diamond 2–4 centimetres (0.79–1.57 in) long and 1–2 centimetres (0.39–0.79 in) wide with a dull top surface and finely hairy beneath. The tree sheds its leaves for a while during dry periods. [6]
Amazon River rain forest in Peru. Tropical rainforests are hot and wet. Mean monthly temperatures exceed 18 °C (64 °F) during all months of the year. [4] Average annual rainfall is no less than 1,680 mm (66 in) and can exceed 10 m (390 in) although it typically lies between 1,750 mm (69 in) and 3,000 mm (120 in). [5]
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Graph of crop production in tropical countries. Raw data from the United Nations. [1] Coconut plucking in Kerala, India by using Coconut Tree Climber. Worldwide more human beings gain their livelihood from agriculture than any other endeavor; the majority are self-employed subsistence farmers living in the tropics [citation needed].
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