Corn School: Early Frost and Goss's Wilt May Take Bite Out of Yields


With reports of the first corn fields being harvested in Manitoba, producers will soon find out the extent to which early frost and Goss’s Wilt reduced yields.

Both frost and Goss’s cause premature drydown of the leaves, explains Dieter Schwarz, market development agronomist with Pride Seeds, in this Corn School episode.

“Once you’ve lost your green and healthy leaf, yield impact can be anywhere from five to 20 percent. That can be frost or disease,” he explains. “If the stalk is still green, the plant will still put energy into maturing the cob, so that’s why there’s a range.”

Related: Corn School: The “Push Test” — Will Corn Stay Standing Until Harvest?

After the leaf tissue has deteriorated it can be difficult to distinguish between frost or Goss’s, notes Schwarz. “Some plants have a little more blotchiness to them (indicating Goss’s), but it’s hard to tell.”

Also watch the “prequel” to this episode of the Corn School, where Dieter discusses how to assess plant health and stalk integrity prior to harvest.

Wake up with RealAgriculture

Subscribe to our daily newsletters to keep you up-to-date with our latest coverage every morning.

Wake up with RealAgriculture

Other Episodes

Corn School (view all)Season 3 (2014) Episode 5

Please register to read and comment.

Privacy Preference Center


Necessary cookies help make a website usable by enabling basic functions like page navigation and access to secure areas of the website. The website cannot function properly without these cookies.

gdpr, __cfduid, PHPSESSID, wordpress_test_cookie, woocommerce_items_in_cart, woocommerce_cart_hash, wp_woocommerce_session, wordpress_logged_in, wordpress_sec, wp-settings, wp-settings-time, __cf_mob_redir, wordpress_cache, realag


Measuring interactions with the ads on the domain.



These are used to track user interaction and detect potential problems. These help us improve our services by providing analytical data on how users use this site.



Preference cookies enable the website to remember information that changes the way the website behaves or looks, like your preferred language or the region that you are in.

chartdefaults, comment_author, comment_author_email, comment_author_url
JSESSIONID, _os_session,anonymous_votes,csrf-param,csrf-token,user,user-id,user-platform,intercom-session,intercom-lou,intercom-session
personalization_id, tfw_exp


Register for a RealAgriculture account to manage your Shortcut menu instead of the default.