Featured Research

from universities, journals, and other organizations

MIRI Method Reduces Water Use In Rice Field Tests

Date:
January 23, 2009
Source:
USDA/Agricultural Research Service
Summary:
Scientists are studying a system that, in rice field tests, cuts water use by 24 percent. Rice, one of the world's most important foods, is a labor-intensive crop that also requires plenty of water. Often, water pumped to flood rice fields comes from shallow aquifers that are dwindling.

A new system for irrigating rice that cuts water use by 24 percent is being studied by ARS researchers.
Credit: Keith Weller

Agricultural Research Service (ARS) and cooperating scientists are studying a system that, in rice field tests, cuts water use by 24 percent.

Rice, one of the world’s most important foods, is a labor-intensive crop that also requires plenty of water. Often, water pumped to flood rice fields comes from shallow aquifers that are dwindling.

The ARS-developed system, called multiple-inlet rice irrigation, or MIRI, involves laying disposable, thin-walled, polyethylene irrigation tubing to connect rice paddies as they are flooded with water. Currently, most rice fields are flooded by discharging water directly into the highest paddy and allowing water to overflow into lower paddies.

Earl Vories, an agricultural engineer at the ARS Cropping Systems and Water Quality Research Unit’s satellite location in Portageville, Mo., has been working with colleagues in the unit and with extension engineer Phil Tacker and others at the University of Arkansas Cooperative Extension Service to study water requirements for rice on a commercial production scale.

Their on-farm water use studies from the1999 through 2002 growing seasons consisted of 14 paired fields located close together, with the same cultivar, soil type, planting date, and management practices. The MIRI method required an average of 24 percent less irrigation water than conventional paddy flooding.

Reducing irrigation water on MIRI fields is important to rice farmers for more than just water and energy savings, since rice fields often share a water supply with other crops. The amount of water available to irrigate these other crops usually depends on how much water is used to first adequately irrigate the rice. A 24 percent reduction in the rice crop's water usage could mean higher yields for the other crops.


Story Source:

The above story is based on materials provided by USDA/Agricultural Research Service. Note: Materials may be edited for content and length.


Cite This Page:

USDA/Agricultural Research Service. "MIRI Method Reduces Water Use In Rice Field Tests." ScienceDaily. ScienceDaily, 23 January 2009. <www.sciencedaily.com/releases/2009/01/090120143617.htm>.
USDA/Agricultural Research Service. (2009, January 23). MIRI Method Reduces Water Use In Rice Field Tests. ScienceDaily. Retrieved September 18, 2014 from www.sciencedaily.com/releases/2009/01/090120143617.htm
USDA/Agricultural Research Service. "MIRI Method Reduces Water Use In Rice Field Tests." ScienceDaily. www.sciencedaily.com/releases/2009/01/090120143617.htm (accessed September 18, 2014).

Share This



More Earth & Climate News

Thursday, September 18, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Raw: Elephant Undergoes Surgery in Tbilisi Zoo

Raw: Elephant Undergoes Surgery in Tbilisi Zoo

AP (Sep. 18, 2014) Grand the elephant has successfully undergone surgery to remove a portion of infected tusk at Tbilisi Zoo in Georgia. British veterinary surgeons used an electric drill to extract the infected piece. (Sept. 18) Video provided by AP
Powered by NewsLook.com
Raw: Scientists Examine Colossal Squid

Raw: Scientists Examine Colossal Squid

AP (Sep. 16, 2014) Squid experts in New Zealand thawed and examined an unusual catch on Tuesday: a colossal squid. It was captured in Antarctica's remote Ross Sea in December last year and has been frozen for eight months. (Sept. 16) Video provided by AP
Powered by NewsLook.com
Man Floats for 31 Hours in Gulf Waters

Man Floats for 31 Hours in Gulf Waters

AP (Sep. 16, 2014) A Texas man is lucky to be alive after he and three others floated for more than a day in the Gulf of Mexico when their boat sank during a fishing trip. (Sept. 16) Video provided by AP
Powered by NewsLook.com
Researchers Explore Shipwrecks Off Calif. Coast

Researchers Explore Shipwrecks Off Calif. Coast

AP (Sep. 16, 2014) Federal researchers are exploring more than a dozen underwater sites where they believe ships sank in the treacherous waters west of San Francisco in the decades following the Gold Rush. (Sept. 16) Video provided by AP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins