Sep 22, 2014
Home| Tools| Events| Blogs| Discussions| Sign UpLogin

Field History, Weather Keys to Disease Management

March 14, 2013
Ear Rot
  

Field history and weather patterns are important in determining how to best manage crop diseases, says a Purdue plant pathologist.

Many organisms that cause crop diseases can survive in the soil and residue for several years. The fungi that cause sudden death syndrome, or SDS, and Phytophthora root rot are two examples in soybeans. Foliar and ear rot diseases, such as Goss's wilt and Aspergillus ear rot, are examples in corn.

"The first thing to consider is which diseases have been problematic in a field in the past," Kiersten Wise said. "If soil borne organisms caused those diseases, producers should plan to continually manage those diseases."

She recommended managing those diseases first with variety selection.

For example, a producer who has a field with a history of Goss's wilt should select a hybrid that has a known resistance to the disease to reduce the chances of disease development. While disease resistance doesn't guarantee immunity, it can reduce yield losses.

Fields with heavy crop residue are at higher risk for future disease problems. Those with continuous corn are usually more likely to see disease develop than those in a corn-soybean rotation because residue doesn't break down as easily over the winter.

Wise said producers can use tillage or other residue decomposition practices on fields with large amounts of residue because it can help reduce chances of disease development.

But an even bigger factor in crop disease development is the weather.

"Weather conditions as farmers start planting and when plants are in reproductive stages will influence what diseases will actually appear in a field," Wise said. "We can try to do the best preventative management that we can, but we're also going to have to be prepared for any diseases the weather gives us."
 

See Comments


 
Log In or Sign Up to comment

COMMENTS

No comments have been posted



Name:

Comments:

Receive the latest news, information and commentary customized for you. Sign up to receive Dairy Today's eUpdate today!

 

MARKETS

CROPSLIVESTOCKFINANCEENERGYMETALS
Market Data provided by Barchart.com
 
 
 
The Home Page of Agriculture
© 2014 Farm Journal, Inc. All Rights Reserved|Web site design and development by AmericanEagle.com|Site Map|Privacy Policy|Terms & Conditions