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 August 27, 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 August 27, 2014).

Share This




More Plants & Animals News

Wednesday, August 27, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Super Healthful Fruits and Vegetables: Which Are Best?

Super Healthful Fruits and Vegetables: Which Are Best?

Ivanhoe (Aug. 27, 2014) We all know that it is important to eat our fruits and vegetables but do you know which ones are the best for you? Video provided by Ivanhoe
Powered by NewsLook.com
Raw: Firefighters Rescue Puppy Stuck in Tire

Raw: Firefighters Rescue Puppy Stuck in Tire

AP (Aug. 26, 2014) It took Houston firefighters more than an hour to free a puppy who got its head stuck in a tire. (Aug. 26) Video provided by AP
Powered by NewsLook.com
Have You Ever Been 'Sleep Drunk?' 1 in 7 Has

Have You Ever Been 'Sleep Drunk?' 1 in 7 Has

Newsy (Aug. 26, 2014) A study published in the journal "Neurology" interviewed more than 19,000 people and found 15 percent suffer from being "sleep drunk." Video provided by Newsy
Powered by NewsLook.com
Activists Urge NYC Mayor to Ban Carriage Horses

Activists Urge NYC Mayor to Ban Carriage Horses

AP (Aug. 26, 2014) A group of New Yorkers are putting Mayor Bill de Blasio on notice for what they say is reneging on his campaign promise to ban carriage horses. They rallied Tuesday near the mayor's Gracie Mansion home. (Aug. 26) 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