News tagged with rice

Related topics: proceedings of the national academy of sciences

Rice as a source of arsenic exposure

A study just published by a Dartmouth team of scientists in the Proceedings of the National Academy of Sciences (PNAS) advances our understanding of the sources of human exposure to arsenic and focuses atten ...

Dec 05, 2011
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Cooking tips to possibly lessen risk of arsenic in rice

Last month rice lovers got some bitter news. The U.S. Food and Drug Administration and Consumer Reports released studies showing "worrisome" levels of cancer-causing arsenic in many popular rices and rice products.

Oct 08, 2012
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Arsenic in your rice: What to do?

Arsenic, a naturally occurring element and industrial byproduct, poses a significant health risk to millions of people worldwide when it leaches into drinking water. It's highly poisonous at high doses, but ...

Jan 15, 2013
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Genetically engineered rice: Protection from arsenic?

(Medical Xpress)—In an article this week, Consumer Reports is calling on the Food and Drug Administration to set standards for how much arsenic can be allowed in rice after finding the potential toxin in almost every ri ...

Sep 20, 2012
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School lunches to have more veggies, whole grains

(AP) -- The first major nutritional overhaul of school meals in more than 15 years means most offerings - including the always popular pizza - will come with less sodium, more whole grains and a wider selection ...

Jan 25, 2012
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Rice

Rice is the seed of the monocot plant Oryza sativa, of the grass family (Poaceae). As a cereal grain, it is the most important staple food for a large part of the world's human population, especially in tropical Latin America, the West Indies, East, South and Southeast Asia. It is the grain with the second highest worldwide production, after maize ("corn").. Since a large portion of maize crops are grown for purposes other than human consumption, rice is probably the most important grain with regards to human nutrition and caloric intake, providing more than one fifth of the calories consumed worldwide by the human species. A traditional food plant in Africa, rice has the potential to improve nutrition, boost food security, foster rural development and support sustainable landcare. In early 2008, some governments and retailers began rationing supplies of the grain due to fears of a global rice shortage.

The name wild rice is usually used for species of the grass genus Zizania, both wild and domesticated, although the term may also be used for primitive or uncultivated varieties of Oryza.

Rice is normally grown as an annual plant, although in tropical areas it can survive as a perennial and can produce a ratoon crop for up to 20 years. The rice plant can grow to 1–1.8 m tall, occasionally more depending on the variety and soil fertility. The grass has long, slender leaves 50–100 cm long and 2–2.5 cm broad. The small wind-pollinated flowers are produced in a branched arching to pendulous inflorescence 30–50 cm long. The edible seed is a grain (caryopsis) 5–12 mm long and 2–3 mm thick.

Rice cultivation is well-suited to countries and regions with low labor costs and high rainfall, as it is very labor-intensive to cultivate and requires plenty of water for cultivation. Rice can be grown practically anywhere, even on a steep hill or mountain. Although its parent species are native to South Asia and certain parts of Africa, centuries of trade and exportation have made it commonplace in many cultures worldwide.

The traditional method for cultivating rice is flooding the fields while, or after, setting the young seedlings. This simple method requires sound planning and servicing of the water damming and channeling, but reduces the growth of less robust weed and pest plants that have no submerged growth state, and deters vermin. While with rice growing and cultivation the flooding is not mandatory, all other methods of irrigation require higher effort in weed and pest control during growth periods and a different approach for fertilizing the soil.

This text uses material from Wikipedia licensed under CC BY-SA