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Weedy rice, also known as red rice, is a variety of rice that produces far fewer grains per plant than cultivated rice and is therefore considered a pest. The name "weedy rice" is used for all types and variations of rice which show some characteristic features of cultivated rice and grow as weeds in commercial rice fields.
Oryza punctata is a caespitose (tussock forming) annual hydrophyte (grows in/on water). [3] [10] The culm base of O. punctata is spongy and greater than 4 mm in diameter.The culm is glabrous (smooth and without hairs) and striate (parallel longitudinal grooves); it is erect or geniculately (bent like a knee) ascending and from 50–120 cm tall with 3–5 nodes.
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.
Oryza rufipogon, also known as wild rice and red rice. Red rice, also known as weedy rice, a low-yielding rice variety that persists as a weed in fields of better-quality rice. Thai Red Cargo rice, a non-glutinous long grain rice variety. Bhutanese red rice, a medium-grain rice grown in the Kingdom of Bhutan in the eastern Himalayas.
[9] Along with this, "weedy red rice (Oryza sativa) is a problematic weed in cultivated rice," and of the rice fields in Arkansas that account for 50% of the nation's rice crop, "about 60% of these...have some red rice infestation." [18] Weeds such as barnyard grass and weedy red rice can often have detrimental effects to rice fields throughout ...
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Oryza rufipogon is a species of flowering plant in the family Poaceae. [2] [3] It is known as brownbeard rice, [4] wild rice, [5] and red rice. [5]In 1965, Oryza nivara was separated off from O. rufipogon.