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 July 22, 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 July 22, 2014).

Share This




More Plants & Animals News

Tuesday, July 22, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

San Diego Zoo Welcomes New, Rare Rhino Calf

San Diego Zoo Welcomes New, Rare Rhino Calf

Reuters - US Online Video (July 21, 2014) An endangered black rhino baby is the newest resident at the San Diego Zoo. Sasha Salama reports. Video provided by Reuters
Powered by NewsLook.com
Shark Sightings a Big Catch for Cape Tourism

Shark Sightings a Big Catch for Cape Tourism

AP (July 21, 2014) A rise in shark sightings along the shores of Chatham, Massachusetts is driving a surge of eager vacationers to the beach town looking to catch a glimpse of a great white. (July 21) Video provided by AP
Powered by NewsLook.com
$23.6 Billion Awarded To Widow In Smoking Lawsuit

$23.6 Billion Awarded To Widow In Smoking Lawsuit

Newsy (July 20, 2014) Cynthia Robinson claims R.J. Reynolds Tobacco Company hid the health and addiction risks of its products, leading to the death of her husband in 1996. Video provided by Newsy
Powered by NewsLook.com
A Centuries' Old British Tradition Is Far from a Swan Song

A Centuries' Old British Tradition Is Far from a Swan Song

AFP (July 19, 2014) As if it weren't enough that the Queen is the Sovereign of the UK and 15 other Commonwealth realms, she is also the owner of all Britain's unmarked swans. Duration: 02:18 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:
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