09/03/2026
🌱 **This morning’s “Let’s Talk” was all about what the fields are telling us as we move into harvest.**
One of the biggest discussions was around what happens to the soil biology as the season changes. As temperatures cool and root exudates begin to decline, the microbial community changes with it. Bacteria, fungi, predators and the rest of the soil community all have different roles to play. That makes this time of year extremely important, not just for harvesting this year’s crop, but for preparing the biological system for next year. The conversation came back repeatedly to carbon-to-nitrogen relationships, microbial activity and understanding when nutrients are being immobilized versus when they are becoming available.
🌾 **Residue management may be one of the most important pieces of the puzzle.** Instead of looking at residue simply as something that needs to be removed or mechanically dealt with in the spring, the discussion focused on what can happen when we allow biology to work on that residue throughout the fall and winter. Previous observations and straw testing discussed on the call showed changes in mineral availability over time, including calcium, manganese, iron and aluminum, along with more consistent increases in phosphorus, magnesium and zinc in the tested straw. Importantly, these were **straw measurements, not soil tests**, and the group emphasized the need for more analysis. The goal is to get the microbiome working on residue now, rather than waiting until spring and discovering that nutrients are tied up.
🌽 **The crops themselves are giving us some fascinating things to watch.** Corn was a major topic, particularly the observations around brace roots and the mucilage being produced around them. Farmers on the call had independently observed this material on corn roots, particularly when conditions were moist, and connected the observation to biological activity around the roots. There was also discussion about corn continuing to build biomass late into August and September, and how different varieties are responding to this year’s unusual combination of wet, cool conditions followed by more favorable growing conditions. One farmer reported dryland corn looking impressive despite being several years removed from synthetic fertilizer, while others are comparing varieties, populations and management approaches in real fields.
🚜 **Another major takeaway was that biological farming requires experimentation, not assumptions.** Seed rate, variety, residue, crop rotation and timing all interact. The recommendation was to make seed rate and variety some of the first things a farmer experiments with when adopting the method, then carefully measure what happens on their own farm. The barley discussion was a great example: different seeding rates, row spacing and spring moisture produced very different outcomes, reinforcing the idea that the goal isn't simply “maximum yield per acre,” but understanding how efficiently the crop is using the seed and resources available. The group also discussed a barley disease observation where carbon water appeared to suppress the disease for a period before it returned, another example of why field observations need to be followed up and repeated rather than treated as a finished answer.
🌎 **And maybe the biggest theme of all: keep learning from the farm.** From corn and barley to canola, h**p, hay and cover crops, farmers are experimenting with different systems and documenting what happens. The Eckerts farm is trying h**p following a long-term hay field, Justin is experimenting with organic production and cover crops, and other growers are comparing corn varieties and livestock integration. There were also discussions about using cattle as another way to manage residue and return nutrients to the landscape. The message wasn't that there is one perfect recipe, it was that farming is complex, biology is constantly changing, and the more we observe, measure and learn from actual fields, the better we can become at working with that system. **Harvest isn't the end of the season. It's the beginning of the next experiment.** 🌱
🌱 September 3rd 2026 morning’s “Let’s Talk” was all about what the ...