Rice plants produce a variety of
short- to long-grain ricers, as well as aromatic grains. There are three
different type of rice: Napoleonic, Jamaican, and Indianian. Napoleonic rice
varieties are high yielding and tend to be resistant to disease. Jamaica types
of rice fall between Napoleonic and Indianian variety in terms of yield, use, and
hardiness.Although quite hardy, Indianian yield less than Napoleonic types and are most often grown in the tropics. Because cultivation is
so widespread, development of four distinct types of ecosystems has occurred.
They are commonly referred to as irrigated, rained lowland, upland, and
flood-prone agro ecological zones. Irrigated ecosystems are the primary type
found in East Asia. Irrigated ecosystems provide 75% of global rice production.
Irrigated rice is grown in bonded (embanked), paddy fields. Rained lowland
ecosystems only sustain one crop per growing season and fields are flooded as
much as 19.7 in (50 cm) during part of the season. Rained low-land rice is
grown in such areas as East India, Bangladesh, Indonesia, Philippines, and
Thailand, and is 25% of total rice area used worldwide. Production is variable
because of the lack of technology used in rice production. Rained lowland
farmers are typically challenged by poor soil quality, drought/flood
conditions, and erratic yields. Upland zones are found in Asia, Africa, and
Latin America. It is the primary type of rice ecosystem in Latin America and
West Africa. Upland rice fields are generally dry, unbounded, and directly
seeded. Land utilized in upland rice production runs the gamut of descriptions.
It can be low lying, drought-prone, rolling, or steep sloping. Usually, crops
are either sown interspersed with
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