The Agronomists, Ep 61: Jim McComb and Aaron Stevanus on soybean micronutrient needs


Soybeans are a handy crop in rotation, as it fixes its own nitrogen, through N-fixing nodules on its roots. But soybeans still need a full compliment of other macro and micronutrients to reach maximum yields.

To discuss identifying, correcting, and avoiding micronutrient deficiencies, host Lyndsey Smith is joined by guests Aaron Stevanus of the Mosaic Company, and Jim McComb, of Farmers Edge AgriCoaching, for this episode of The Agronomists, brought to you by Adama Canada.

Catch a new episode of The Agronomists every Monday night at 8 pm E!

Quick summary

  • We’ve said it before, but we’ll say it again: start with a soil test
  • Spend your first dime on lime! Why?
  • pH has a huge impact on nutrient availability
  • Clip 1: Dale Cowan — manganese deficiency
  • Some micronutrient problems can be at least temporarily fixed with foliar applications
  • Micros can go from deficient, to sufficient, to toxic quickly
  • Remember: nodules! Early nodulation and healthy nodulation is key to the season-long ability of the plant of accessing N
  • Clip 2: Mapping the whole field with Aaron Breimer
  • Other nutrients can interact and induce deficiency
  • Boron, when limiting, can cause pod abortion. It happens in Jim’s area
  • What about dry vs. liquid on the planter? Is there a perfect blend?
  • Potash and phosphorus management matters most

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

The Agronomists (view all)Season 3 (2022) Episode 35

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.