Sugarcane is a tropical, perennial grass that forms lateral shoots at the base to produce multiple stems, typically three to four m (10 to 13 ft) high and about 5 cm (2 in) in diameter. The stems grow into cane stalk, which when mature constitutes around 75% of the entire plant. A mature stalk is typically composed of 11–16% fiber, 12–16% soluble sugars, 2–3% nonsugars, and 63–73% water. A sugarcane crop is sensitive to the climate, soil type, irrigation, fertilizers, insects, disease control, varieties, and the harvest period. The average yield of cane stalk is 60–70 tonnes per hectare (24–28 long ton/acre; 27–31 short ton/acre) per year. However, this figure can vary between 30 and 180 tonnes per hectare depending on knowledge and crop management approach used in sugarcane cultivation. Sugarcane is a cash crop, but it is also used as livestock fodder.
Sugarcane is indigenous to tropical South and Southeast Asia.[9] Different species likely originated in different locations, with Saccharum barberi originating in India and S. edule and S. officinarum in New Guinea.[9] The earliest known production of crystalline sugar began in northern India. The exact date of the first cane sugar production is unclear. The earliest evidence of sugar production comes from ancient Sanskrit and Pali texts.[10]
Around the 8th century, Muslim and Arab traders introduced sugar from South Asia to the other parts of the Abbasid Caliphate in the Mediterranean, Mesopotamia, Egypt, North Africa, and Andalusia. By the 10th century, sources state that every village in Mesopotamia grew sugarcane.[8] It was among the early crops brought to the Americas by the Spanish, mainly Andalusians, from their fields in the Canary Islands, and the Portuguese from their fields in the Madeira Islands.
Sugarcane cultivation requires a tropical or temperate climate, with a minimum of 60 cm (24 in) of annual moisture. It is one of the most efficient photosynthesizers in the plant kingdom. It is a C4 plant, able to convert up to 1% of incident solar energy into biomass.In prime growing regions, such as Mauritius, Dominican Republic, Puerto Rico, India, Guyana, Indonesia, Pakistan, Peru, Brazil, Bolivia, Colombia, Australia, Ecuador, Cuba, the Philippines, El Salvador, Jamaica, and Hawaii, sugarcane crops can produce over 15 kg/m2 of cane.
Sugarcane is cultivated in the tropics and subtropics in areas with a plentiful supply of water for a continuous period of more than six to seven months each year, either from natural rainfall or through irrigation. The crop does not tolerate severe frosts. Therefore, most of the world's sugarcane is grown between 22°N and 22°S, and some up to 33°N and 33°S.When sugarcane crop is found outside this range, such as the Natal region of South Africa, it is normally due to anomalous climatic conditions in the region, such as warm ocean currents that sweep down the coast. In terms of altitude, sugarcane crop is found up to 1,600 metres or 5,200 feet close to the equator in countries such as Colombia, Ecuador, and Peru.
Sugarcane can be grown on many soils ranging from highly fertile well-drained mollisols, through heavy cracking vertisols, infertile acid oxisols, peaty histosols, to rocky andisols. Both plentiful sunshine and water supplies increase cane production.
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