Navigation Links
Higher temperatures to slow Asian rice production
Date:8/9/2010

Production of ricethe world's most important crop for ensuring food security and addressing povertywill be thwarted as temperatures increase in rice-growing areas with continued climate change, according to a new study by an international team of scientists.

The research team found evidence that the net impact of projected temperature increases will be to slow the growth of rice production in Asia. Rising temperatures during the past 25 years have already cut the yield growth rate by 10-20 percent in several locations.

Published in the online early edition the week of Aug. 9, 2010 in Proceedings of the National Academy of Sciences a peer-reviewed, scientific journal from the United Statesthe report analyzed six years of data from 227 irrigated rice farms in six major rice-growing countries in Asia, which produces more than 90 percent of the world's rice.

"We found that as the daily minimum temperature increases, or as nights get hotter, rice yields drop," said Jarrod Welch, lead author of the report and graduate student of economics at the University of California, San Diego.

This is the first study to assess the impact of both daily maximum and minimum temperatures on irrigated rice production in farmer-managed rice fields in tropical and subtropical regions of Asia.

"Our study is unique because it uses data collected in farmers' fields, under real-world conditions," said Welch. "This is an important addition to what we already know from controlled experiments."

"Farmers can be expected to adapt to changing conditions, so real-world circumstances, and therefore outcomes, might differ from those in controlled experimental settings," he added.

Around three billion people eat rice every day, and more than 60 percent of the world's one billion poorest and undernourished people who live in Asia depend on rice as their staple food. A decline in rice production will mean more people will slip into poverty and hunger, the researchers said.

"Up to a point, higher day-time temperatures can increase rice yield, but future yield losses caused by higher night-time temperatures will likely outweigh any such gains because temperatures are rising faster at night," said Welch. "And if day-time temperatures get too high, they too start to restrict rice yields, causing an additional loss in production."

"If we cannot change our rice production methods or develop new rice strains that can withstand higher temperatures, there will be a loss in rice production over the next few decades as days and nights get hotter. This will get increasingly worse as temperatures rise further towards the middle of the century," he added.


'/>"/>

Contact: Rex Graham
ragraham@ucsd.edu
858-534-5952
University of California - San Diego
Source:Eurekalert  

Related biology news :

1. Snakes, salamanders and other creatures thrive in areas with higher deer populations
2. Children distressed by family fighting have higher stress hormones
3. Researchers push nature beyond its limits to create higher-density biofuels
4. Teenage boys who eat fish at least once a week achieve higher intelligence scores
5. Genetic irregularities linked to higher risk of COPD among smokers
6. Business, scientific, higher education groups laud President Obamas commitment to science
7. Immigrant women may be at higher risk of having a baby with a birth defect
8. People of higher socioeconomic status choose better diets -- but pay more per calorie
9. Bioethanols impact on water supply 3 times higher than once thought
10. Metabolic syndrome risk factors drive significantly higher health care costs
11. Ethiopias climate 27 million years ago had higher rainfall, warmer soil
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Higher temperatures to slow Asian rice production
(Date:3/30/2017)... YORK , March 30, 2017 Trends, ... type (physiological and behavioral), by technology (fingerprint, AFIS, iris ... voice recognition, and others), by end use industry (government ... and immigration, financial and banking, and others), and by ... Europe , Asia Pacific , ...
(Date:3/27/2017)... , March 27, 2017  Catholic Health Services ... Management Systems Society (HIMSS) Analytics for achieving Stage ... Model sm . In addition, CHS previously earned ... hospitals using an electronic medical record (EMR). ... high level of EMR usage in an outpatient ...
(Date:3/23/2017)... The report "Gesture Recognition and Touchless Sensing Market by ... Global Forecast to 2022", published by MarketsandMarkets, the market is expected to be ... 2017 and 2022. Continue Reading ... ... ...
Breaking Biology News(10 mins):
(Date:10/12/2017)... ... , ... They call it the “hairy ball.” It’s an ... a system of linkages and connections so complex and dense that “it looks ... at Worcester Polytechnic Institute (WPI) and director of the university’s bioinformatics and computational ...
(Date:10/12/2017)... FL (PRWEB) , ... October ... ... (RPS®) today announces publication of a United States multicenter, prospective clinical study ... use, disposable, point-of-care diagnostic test capable of identifying clinically significant acute bacterial ...
(Date:10/12/2017)... Diego, CA (PRWEB) , ... ... ... (https://www.onramp.bio/ ) has launched Rosalind™, the first-ever genomics analysis platform specifically ... all bioinformatics complexity. Named in honor of pioneering researcher Rosalind Franklin, who ...
(Date:10/11/2017)... ... , ... Personal eye wash is a basic first aid supply for any work environment, but ... do you rinse first if a dangerous substance enters both eyes? It’s one less decision, ... its unique dual eye piece. , “Whether its dirt and debris, or an acid or ...
Breaking Biology Technology: