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:5/16/2017)...  Veratad Technologies, LLC ( www.veratad.com ), an innovative ... verification solutions, announced today they will participate as a ... thru May 17, 2017, in Washington D.C.,s ... Identity impacts the lives of billions ... evolving digital world, defining identity is critical to nearly ...
(Date:4/24/2017)... 24, 2017 Janice Kephart , ... Identity Strategy Partners, LLP (IdSP) , today issues ... President Trump,s March 6, 2017 Executive Order: ... vetting can be instilled with greater confidence, enabling ... all refugee applications are suspended by until at ...
(Date:4/17/2017)... 17, 2017 NXT-ID, Inc. (NASDAQ: NXTD ... filing of its 2016 Annual Report on Form 10-K on Thursday ... ... available in the Investor Relations section of the Company,s website at ... website at http://www.sec.gov . 2016 Year Highlights: ...
Breaking Biology News(10 mins):
(Date:5/23/2017)... ... 2017 , ... Vortex Biosciences , provider of circulating tumor cell (CTC) ... cells using Vortex microfluidic technology ” in Nature Precision Oncology on May 8th. ... Carlo and Dr. Matthew Rettig at the University of California, Los Angeles. The publication ...
(Date:5/23/2017)... Switzerland (PRWEB) , ... May 23, 2017 , ... ... forces machine manufacturers to re-engineer their control technology again and again. METTLER TOLEDO ... problem for machine manufacturers. The videos illustrate how integration of the ACT350 into ...
(Date:5/21/2017)... ... May 20, 2017 , ... ... the lengthy trial and error process by finding the right antidepressant faster. ... strengthen the doctor-patient relationship through a personalized approach to treatment. , ...
(Date:5/18/2017)... ... May 16, 2017 , ... Clinical Supplies Management (“CSM”), a Great Point Partners ... to grow. CSM has doubled in size over the past six months with ... strategy. , Roger Gasper joins CSM as Chief Financial Officer. Roger has over ...
Breaking Biology Technology: