Featured Research

from universities, journals, and other organizations

Fungus Pitted Against Apple Pest

Date:
November 5, 2008
Source:
USDA/Agricultural Research Service
Summary:
A cocktail of gaseous compounds emitted by a beneficial fungus may offer a way to biologically fumigate stored apples, ridding them of codling moth larvae.

ARS scientists are working on a new way to rid stored apples of codling moth larvae.
Credit: Photo by Scott Bauer

A cocktail of gaseous compounds emitted by a beneficial fungus may offer a way to biologically fumigate stored apples, ridding them of codling moth larvae.

That's the implication of studies conducted by entomologist Lerry Lacey and others at the Agricultural Research Service's (ARS) Yakima Agricultural Research Laboratory in Wapato, Wash. In earlier studies, they showed that a blend of alcohols, esters and other gases released by the fungus Muscodor albus killed adult potato tuber moths and larvae, costly pests of stored tubers. The ARS researchers' work is part of a cooperative agreement with AgraQuest, Inc., of Davis, California.

In the Pacific Northwest, codling moths (Cydia pomonella) are problematic for both growers and distributors. Stored apples are often fumigated with broad-spectrum chemicals when the fruit is destined for foreign markets. However, biobased treatments may provide options for codling-moth control with economic and environmental advantages over standard chemical fumigation.

The Wapato team's investigation of M. albus falls under a larger program to diminish reliance on synthetic chemical controls by using biocontrol agents in an integrated pest management approach.

In laboratory trials, Lacey placed adult codling moths inside special fumigation chambers and exposed them for three days to fungal fumes that killed 83 percent of the insects. Similarly exposing the larvae killed up to 87 percent, depending on their developmental stage. The fungal gases even reached larvae that burrowed inside apples, killing 73 percent of the pests.

Although the initial short-exposure tests didn't yield results comparable to broad-spectrum chemicals, biofumigation's full potential has yet to be evaluated within apple cartons, where the pests will be exposed to fungal fumes for prolonged periods of time. For example, 14-day exposures of the moth's overwintering stage--cocooned larvae, which are the hardest to control--resulted in 100% mortality.

Research by AgraQuest and others has also shown Muscodor's potential to kill other fungi and bacteria harmful to stored fruit and vegetables and to humans.


Story Source:

The above story is based on materials provided by USDA/Agricultural Research Service. Note: Materials may be edited for content and length.


Cite This Page:

USDA/Agricultural Research Service. "Fungus Pitted Against Apple Pest." ScienceDaily. ScienceDaily, 5 November 2008. <www.sciencedaily.com/releases/2008/10/081031213545.htm>.
USDA/Agricultural Research Service. (2008, November 5). Fungus Pitted Against Apple Pest. ScienceDaily. Retrieved September 18, 2014 from www.sciencedaily.com/releases/2008/10/081031213545.htm
USDA/Agricultural Research Service. "Fungus Pitted Against Apple Pest." ScienceDaily. www.sciencedaily.com/releases/2008/10/081031213545.htm (accessed September 18, 2014).

Share This



More Plants & Animals News

Thursday, September 18, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Chimp Violence Study Renews Debate On Why They Kill

Chimp Violence Study Renews Debate On Why They Kill

Newsy (Sep. 17, 2014) The study weighs in on a debate over whether chimps are naturally violent or become that way due to human interference in the environment. Video provided by Newsy
Powered by NewsLook.com
Some Tobacco Farmers Thrive Amid Challenges

Some Tobacco Farmers Thrive Amid Challenges

AP (Sep. 16, 2014) The South's tobacco country is surviving, and even thriving in some cases, as demand overseas keeps growers in the fields of one of America's oldest cash crops. (Sept. 16) Video provided by AP
Powered by NewsLook.com
Scientists Given Rare Glimpse of 350-Kilo Colossal Squid

Scientists Given Rare Glimpse of 350-Kilo Colossal Squid

AFP (Sep. 16, 2014) Scientists say a female colossal squid weighing an estimated 350 kilograms (770 lbs) and thought to be only the second intact specimen ever found was carrying eggs when discovered in the Antarctic. Duration: 00:47 Video provided by AFP
Powered by NewsLook.com
Raw: Scientists Examine Colossal Squid

Raw: Scientists Examine Colossal Squid

AP (Sep. 16, 2014) Squid experts in New Zealand thawed and examined an unusual catch on Tuesday: a colossal squid. It was captured in Antarctica's remote Ross Sea in December last year and has been frozen for eight months. (Sept. 16) 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