Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Will global warming improve crop production?

19.09.2002


Winter temperatures are on the rise and scientists note this change will actually increase a plant’s exposure to freezing temperatures

Scientists from Agriculture and Agri-Food Canada predict crops will be at a greater risk of winter damage in the future even though the climate will be warmer. Perennial forage crops are grown on more than 40% of the cultivated land in Eastern Canada and other regions of North America, where they constitute the backbone of the livestock industry. The study of the impact of this significant warming trend is published in the September-October issue of Agronomy Journal, published by the American Society of Agronomy.

The loss of snow cover due to warmer winter conditions will increase exposure of plants to freezing temperatures. The authors also conclude that the occurrence of above-freezing temperatures and loss of cold hardiness will increase with climate warming. Forage crops are also likely to enter the winter in a lower state of cold hardiness due to warmer fall temperatures. Winter temperatures are expected to increase by 2 to 6 degrees C over the next 50 years in Eastern Canada; however, survival of perennial crops over the winter months requires the right climatic conditions. Sub-freezing temperature, loss of cold hardiness due to warm periods, ice encasement, and soil heaving can result in frequent crop losses.



Gilles Bélanger, project leader, said, "This might be a surprise to many that warmer winter conditions will mean greater risks to perennial forage crops. Perennial forage crops in Canada and in the northern part of the United States prefer the comfort of a nice snow cover after a good rest period in the fall. Rain, ice, and no snow cover in the middle of the winter will occur more often in the future; this brings no comfort to perennial forage crops."

For this study, conducted from 1999 to 2001, scientists developed agro-climatic indices related to the effect of climate conditions on winter survival of perennial forage crops. These agro-climatic indices were then calculated for current conditions (1961-90) and two future periods (2010-39, 2040-69). Sixty-nine climatic stations located in all agricultural areas of Eastern Canada were used.

For forage producers, climate change will mean increased risks in an agricultural industry already facing major challenges. The authors of the study, however, are confident that current and future research efforts in the development of improved cultivars and the adaptation of management practices will help producers make the best of climate change.

Sara Procknow | EurekAlert!
Further information:
http://agron.scijournals.org
http://www.agronomy.org,
http://www.crops.org

More articles from Agricultural and Forestry Science:

nachricht Cascading use is also beneficial for wood
11.12.2017 | Technische Universität München

nachricht The future of crop engineering
08.12.2017 | Max-Planck-Institut für Biochemie

All articles from Agricultural and Forestry Science >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Long-lived storage of a photonic qubit for worldwide teleportation

MPQ scientists achieve long storage times for photonic quantum bits which break the lower bound for direct teleportation in a global quantum network.

Concerning the development of quantum memories for the realization of global quantum networks, scientists of the Quantum Dynamics Division led by Professor...

Im Focus: Electromagnetic water cloak eliminates drag and wake

Detailed calculations show water cloaks are feasible with today's technology

Researchers have developed a water cloaking concept based on electromagnetic forces that could eliminate an object's wake, greatly reducing its drag while...

Im Focus: Scientists channel graphene to understand filtration and ion transport into cells

Tiny pores at a cell's entryway act as miniature bouncers, letting in some electrically charged atoms--ions--but blocking others. Operating as exquisitely sensitive filters, these "ion channels" play a critical role in biological functions such as muscle contraction and the firing of brain cells.

To rapidly transport the right ions through the cell membrane, the tiny channels rely on a complex interplay between the ions and surrounding molecules,...

Im Focus: Towards data storage at the single molecule level

The miniaturization of the current technology of storage media is hindered by fundamental limits of quantum mechanics. A new approach consists in using so-called spin-crossover molecules as the smallest possible storage unit. Similar to normal hard drives, these special molecules can save information via their magnetic state. A research team from Kiel University has now managed to successfully place a new class of spin-crossover molecules onto a surface and to improve the molecule’s storage capacity. The storage density of conventional hard drives could therefore theoretically be increased by more than one hundred fold. The study has been published in the scientific journal Nano Letters.

Over the past few years, the building blocks of storage media have gotten ever smaller. But further miniaturization of the current technology is hindered by...

Im Focus: Successful Mechanical Testing of Nanowires

With innovative experiments, researchers at the Helmholtz-Zentrums Geesthacht and the Technical University Hamburg unravel why tiny metallic structures are extremely strong

Light-weight and simultaneously strong – porous metallic nanomaterials promise interesting applications as, for instance, for future aeroplanes with enhanced...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

See, understand and experience the work of the future

11.12.2017 | Event News

Innovative strategies to tackle parasitic worms

08.12.2017 | Event News

AKL’18: The opportunities and challenges of digitalization in the laser industry

07.12.2017 | Event News

 
Latest News

A whole-body approach to understanding chemosensory cells

13.12.2017 | Health and Medicine

Water without windows: Capturing water vapor inside an electron microscope

13.12.2017 | Physics and Astronomy

Cellular Self-Digestion Process Triggers Autoimmune Disease

13.12.2017 | Life Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>