Soil Management
Don’ t Let Nitrogen Get Away From You
Nitrogen mistakes can be expensive, and not just financially. Applied too early, too heavily, or under risky field conditions, nitrogen can leach, volatilize, or move off-field before the next crop has any chance to benefit.
Stark warned that overapplication can also disrupt the relationship between crops and soil microbes.“ Applying too much nitrogen or phosphorus discourages the crop from secreting carbohydrates through its roots, leaving microbes to find their energy elsewhere, meaning your soil organic matter,” Stark says.
In practical terms, tight budgets make prioritization even more important. Testing first, matching applications to actual field needs, and avoiding blanket rates can help growers protect both their input dollars and their soil balance.
Keep Living Roots Working
If growers want to get the most from the post-harvest window, cover crops deserve serious consideration. Keeping living roots in the ground helps reduce erosion, capture nutrients, improve infiltration, and support biological activity after the cash crop is gone.
Bly pointed to several core soil health principles: keeping the soil covered, reducing tillage, maintaining living roots as much as possible, increasing diversity, and integrating livestock where appropriate.
“ All foster soil aggregation, structure formation, and ultimately soil health,” Bly says.
Depending on the goal, different cover crop strategies may make sense. Some growers may prioritize erosion control and
biomass, while others may focus on scavenging nutrients, easing compaction, or improving weed suppression. The right fit depends on timing, moisture, system needs, and management capacity.
Fix Spring Problems Before Winter Locks Them In
Fall is also the time to address problems that will only become harder to fix later. Deep ruts, poor drainage, and compacted zones should be noted and prioritized before winter freezes them in place. Low-performing areas should be mapped for a different fertility or management strategy next year.
The biggest mistake is often doing too little, too late.“ Not using soil testing, a correct yield goal, and university recommendations are common mistakes,” Bly says.
A Stronger Season Starts After Harvest
Post-harvest soil management is not a side task after the crop is off. It is an investment in next season’ s performance and the long-term strength of the field. Fall offers growers a rare chance to see issues clearly, act before spring pressure mounts, and make decisions that improve nutrient retention, soil structure, and resilience.
The best place to start is simple: test first, assess honestly, and prioritize the biggest limiting factors. Whether that means better residue distribution, a more disciplined fertility plan, cover crops, or compaction repair, the work done now can pay forward into a healthier, more productive spring.
Fertility is not just about replacing what the crop removes. It is about building soil that can keep delivering year after year.
22 | 800-247-2000 | 515-955-1600 | Harvest Fall 2026