Corn School: Does split nitrogen pay in Western Canada?

Episodes:

The practice of split-applying nitrogen through the growing season has been increasing throughout U.S. midwest corn states and in Eastern Canada. In Western Canada, about 20 percent of corn growers in Manitoba have adopted the in-season practice, according to newly-released results of a survey conducted by the Manitoba Corn Growers.

In this episode of RealAgriculture Corn School, Manitoba Agriculture soil fertility specialist John Heard explains they found growers use at least 13 different ways of timing application and placing nitrogen fertilizer throughout the season:

  • 30 percent of farmers typically apply fertilizer in the fall; it’s very common to band ammonia on clay soils
  • 30 percent apply nitrogen at or before seeding, using primarily broadcast urea
  • 15 to 20 percent apply at seeding, often urea in a sideband application
  • 20 percent apply nitrogen in-season, either sidedressed anhydrous ammonia or 28-0-0.

Fall-applied nitrogen can still be an effective practice for growers in that province, he says.

“Fall nitrogen is still a very efficient way for us to handle nitrogen,” says Heard. “We’ve had a dry fall and a dry spring and we would expect in a year like this that any fall-applied nitrogen is just as efficient as spring-applied.”

Story continues after the video.

Heard notes that farmers increasingly have the ability and the equipment to adopt split nitrogen application, but based on research work at 10 sites in Manitoba there is no yield advantage to support this management change.

John Heard discussing different strategies for applying nitrogen in corn at the Crops-A-Palooza field day in Portage la Prairie, Man. last week.

“We might expect advantages in those years when we experience early-season losses, when the plant is not using much nitrogen,” explains Heard. “If we have all up-front nitrogen, that nitrogen is vulnerable to loss. If we have those conditions and farmers have the option to supplement in-season, that’s where we might expect those systems to shine.”

Click here for more Corn School episodes.

Leave a Reply

 

This site uses Akismet to reduce spam. Learn how your comment data is processed.

Privacy Preference Center

Necessary

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
__cfduid

Marketing

Measuring interactions with the ads on the domain.

__gads,fsk_ut_2317
scmtid,v,a,JSESSIONID
IDE

Statistics

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.

_ga,_gid,_gat,_cb,_chartbeat2,_chartbeat4
_ga,_gat
_ga,_gid
metrics_token

Preferences

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