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The term “upland rice” refers to rice cultivated in non-flooded conditions, and it can encompass various specific definitions. While most of the world's rice is grown in paddy fields or wet environments that require significant amount of water, rice itself does not inherently need flooding to thrive.
Experiments with upland rice demonstrated that it could grow over large areas of the country but the crop's yield and quality are inferior to lowland rice produced by irrigation methods. [11] Geese flying over a rice field in the Sacramento Valley, California. Rice dryer and storage building in Arkansas County, Arkansas
Abiotic factors include the soil type, whether lowland or upland, amount of rain or irrigation water, temperature, day length, and intensity of sunlight. [5] Rice grains can be planted directly into the field where they will grow, or seedlings can be grown in a seedbed and transplanted into the field.
Rice raised in the well-watered lowland areas is known as lowland or wet rice. In the hilly areas, slopes are cut into terraces for the cultivation of rice. Thus, the rice grown in the hilly areas is known as dry or upland rice. The yield of upland rice per hectare is comparatively less than that of wet rice.
Upland habitats are cold, clear and rocky whose rivers are fast-flowing in mountainous areas; lowland habitats are warm with slow-flowing rivers found in relatively flat lowland areas, with water that is frequently colored by sediment and organic matter. [3] [4] These classifications overlap with the geological definitions of "upland" and ...
As a plant breeder, he made significant contributions to rice breeding. He provided guidance for the development, isolation, and release of nine Seed Board rice varieties: Milpal 4, HBD-2, Azmil 26 and C-22 for upland rice production, and C-18, C4-63, C4-137, C-168 and C-12 for lowland rice production.
Rice can come in many shapes, colours and sizes. This is a list of rice cultivars, also known as rice varieties.There are several species of grain called rice. [1] Asian rice (Oryza sativa) is most widely known and most widely grown, with two major subspecies (indica and japonica) and over 40,000 varieties. [2]
Oryza sativa, having the common name Asian cultivated rice, [2] is the much more common of the two rice species cultivated as a cereal, the other species being O. glaberrima, African rice. It was first domesticated in the Yangtze River basin in China 13,500 to 8,200 years ago. [3] [4] [5] [6]