Featured Research

from universities, journals, and other organizations

Wheat Disease: Septoria Tritici Strains Less Sensitive To Fungicide

Date:
April 17, 2009
Source:
Teagasc
Summary:
Current strategies to control the wheat disease Septoria tritici may be under threat.

New research at Teagasc Crops Research Centre, Oak Park, Carlow has found that current strategies to control the wheat disease Septoria tritici may be under threat. In recent weeks strains of Septoria tritici were found in some crops that were less sensitive to the fungicide prothioconazole (Proline) in the laboratory than any previously tested. These strains also show a reduction in sensitivity to epoxiconazole (Opus).

Dr Eugene O’ Sullivan, plant pathologist at Teagasc Crops Research Centre, Oak Park said: “It is not clear if these changes will affect fungicide performance in the field this year but fungicides should be used in a way that will reduce selection pressure. Triazole fungicides should not be used in T0 (pre-T1) sprays. In subsequent sprays, prothioconazole and epoxiconazole should only be used in pre-formulated mixtures or tank mixes with partner fungicides with different modes of action.”

The triazole group of fungicides have been the mainstay of cereal disease control for three decades. The strobilurins, popular in the late 1990s and early 2000s quickly succumbed to developing resistance in 2003. Growers have relied on triazole fungicides for most of their disease control since then. “We need to do all that we can to avoid any reduction in the efficacy of triazole fungicides,” stated Dr O’ Sullivan.

This development is a cause for major concern according to Professor Jimmy Burke, head of Teagasc’s Crops Research Centre. He said: “It is not clear how the shift in insensitivity will affect disease control by prothioconazole in the coming growing season. Intensive monitoring of the evolving fungicide sensitivity situation will continue at Oak Park. Teagasc researchers will monitor developments in the field as the season progresses, testing the efficacy of the fungicide in crops. In the meantime, growers must choose fungicide strategies wisely.”

Previous studies by scientists at Oak Park have shown a reduction in sensitivity of septoria to the triazole fungicides Folicur and Caramba but not to Opus and Proline. But this has now changed and growers are warned to be vigilant so that world class yields can still be attained,” said Professor Burke.


Story Source:

The above story is based on materials provided by Teagasc. Note: Materials may be edited for content and length.


Cite This Page:

Teagasc. "Wheat Disease: Septoria Tritici Strains Less Sensitive To Fungicide." ScienceDaily. ScienceDaily, 17 April 2009. <www.sciencedaily.com/releases/2009/04/090417195829.htm>.
Teagasc. (2009, April 17). Wheat Disease: Septoria Tritici Strains Less Sensitive To Fungicide. ScienceDaily. Retrieved October 2, 2014 from www.sciencedaily.com/releases/2009/04/090417195829.htm
Teagasc. "Wheat Disease: Septoria Tritici Strains Less Sensitive To Fungicide." ScienceDaily. www.sciencedaily.com/releases/2009/04/090417195829.htm (accessed October 2, 2014).

Share This



More Plants & Animals News

Thursday, October 2, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Attacking Superbugs

Attacking Superbugs

Ivanhoe (Oct. 1, 2014) — Two weapons hospitals can use to attack superbugs. Scientists in Ireland created a new gel resistant to superbugs, and a robot that can disinfect a room in minutes. Video provided by Ivanhoe
Powered by NewsLook.com
Cultural Learning In Wild Chimps Observed For The First Time

Cultural Learning In Wild Chimps Observed For The First Time

Newsy (Oct. 1, 2014) — Cultural transmission — the passing of knowledge from one animal to another — has been caught on camera with chimps teaching other chimps. Video provided by Newsy
Powered by NewsLook.com
Earth Has Lost Half Its Vertebrate Wildlife Since 1970: WWF

Earth Has Lost Half Its Vertebrate Wildlife Since 1970: WWF

Newsy (Sep. 30, 2014) — A new study published by the World Wide Fund for Nature found that more than half of the world's wildlife population has declined since 1970. Video provided by Newsy
Powered by NewsLook.com
Annual Dog Surfing Competition Draws California Crowds

Annual Dog Surfing Competition Draws California Crowds

AFP (Sep. 30, 2014) — The best canine surfers gathered for Huntington Beach's annual dog surfing competition, "Surf City, Surf Dog." Duration: 01:15 Video provided by AFP
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:

Strange & Offbeat Stories

 

Plants & Animals

Earth & Climate

Fossils & Ruins

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