National Network Provides Update On Devastating Corn Disease

May 01, 1998

St. Paul, MN (April 30, 1998) -- Research aimed at monitoring the devastating corn disease, gray leaf spot, indicates development of hybrids with genetic resistance is feasible and when combined with crop rotation, yield losses can be reduced. Conducted by a national network of plant pathologists from universities, USDA-Agriculture Research Services and seed companies, this cooperative effort began in response to the major gray leaf spot epidemic that affected the U.S. Corn Belt nearly two years ago and continues to remain a major threat to corn production.

"The findings are significant for several reasons," says Patrick Lipps, plant pathologist and member of the NCR-25 Committee responsible for the updated information. "We realized that hybrids responded similarly across environments which tells us that hybrids with resistance to local fungal populations will have a resistant reaction at other locations as well. This is key for corn breeders. Using resistant hybrids in combination with crop rotation will definitely restrict yield losses."

Although the fungus which causes this disease, Cercospora zeae-maydis, has been around since 1925, its incidence didn?t accelerate until corn acreage was increasingly placed into conservation tillage during the 1980?s. However, Lipps insists, "Growers should continue to use conservation tillage wherever practical. Unless environmental conditions are extremely favorable for gray leaf spot development, the economic and environmental advantages of conservation tillage clearly outweigh the risk of loss due to the disease."

The NCR-25 committee recommends taking the following steps to minimize disease:For the complete NCR-25 Report, Gray Leaf Spot of Corn: An Update, visit the home page of the American Phytopathological Society (APS) at http://www.scisoc.org. The American Phytopathological Society is a professional scientific organization dedicated to the study and control of plant disease with more than 5,000 members worldwide.
-end-


American Phytopathological Society

Related Corn Articles from Brightsurf:

Making sense of a universe of corn genetics
A new study details the latest efforts to predict traits in corn based on genomics and data analytics.

Redefining drought in the US corn belt
As the climate trends warmer and drier, global food security increasingly hinges on crops' ability to withstand drought.

Speedy recovery: New corn performs better in cold
Around the world, each person eats an average of 70 pounds of corn each year, with even more grown for animal feed and biofuel.

US corn yields get boost from a global warming 'hole'
The global average temperature has increased 1.4 degrees Fahrenheit over the last 100 years.

Genetic discovery may improve corn quality, yields
Researchers may be able to improve corn yields and nutritional value after discovering genetic regulators that synthesize starch and protein in the widely eaten grain, according to a Rutgers-led study.

Pollen genes mutate naturally in only some strains of corn
Pollen genes mutate naturally in only some strains of corn, according to Rutgers-led research that helps explain the genetic instability in certain strains and may lead to better breeding of corn and other crops.

Fungal mating: Next weapon against corn aflatoxin?
Native fungi combinations show promise against aflatoxin.

Scientists discover new 'architecture' in corn
New research on the US's most economically important agricultural plant -- corn -- has revealed a different internal structure of the plant than previously thought, which can help optimize how corn is converted into ethanol.

Breeding corn for water-use efficiency may have just gotten easier
With approximately 80 percent of our nation's water supply going towards agriculture, it's fair to say it takes a lot of water to grow crops.

Changing temperatures are helping corn production in US -- for now
Increased production of corn in the US has largely been credited to advances in farming technology but new research shows that changing temperatures play a significant role in crop yield.

Read More: Corn News and Corn Current Events
Brightsurf.com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com.