Field Notes

Writing from Des Moines about what we see in Iowa corn and soybean fields — nitrogen timing, pest pressure, scouting methods, and the limits of what aerial imaging can tell you.

All Articles
What to Expect from AI Yield Estimates at V8: An Honest Look at Accuracy
Yield Estimation
What to Expect from AI Yield Estimates at V8: An Honest Look at Accuracy

AI yield estimation has limits. We break down what late-season canopy data can and cannot tell you before harvest.

Iron Deficiency Chlorosis in Iowa Soybeans: Detecting It from the Air Before It Costs Yield
Crop Health
Iron Deficiency Chlorosis in Iowa Soybeans: Detecting It from the Air Before It Costs Yield

IDC in soybeans can cut yields by 10-20% in affected zones if not caught early. Fieldglint flags high-risk acres before symptoms escalate.

Using Aerial Imaging to Assess Cover Crop Biomass Before Spring Termination
Cover Crops
Using Aerial Imaging to Assess Cover Crop Biomass Before Spring Termination

A pre-termination biomass estimate lets you time herbicide applications and predict spring nitrogen credit. Here's how we generate it.

Why We Started in the Iowa Corn Belt — and What We're Building Next
Company
Why We Started in the Iowa Corn Belt — and What We're Building Next

Des Moines was the right place to start a field scouting company. Here's the Fieldglint origin story and our roadmap for 2026.

Drone Scouting vs. Walking Rows: When Each Approach Makes Sense
Scouting Methods
Drone Scouting vs. Walking Rows: When Each Approach Makes Sense

Aerial scouting and ground-level walking aren't competitors — they're complements. Understanding what each sees changes how you allocate field time.

Mapping Western Corn Rootworm Pressure from the Air: What Works and What Doesn't
Pest Management
Mapping Western Corn Rootworm Pressure from the Air: What Works and What Doesn't

Aerial imaging can detect rootworm feeding damage through canopy disruption patterns — but only after economic threshold. We explain the timing.

Catching Nitrogen Deficiency Before V8: The Window That Matters for Corn
Soil & Nutrition
Catching Nitrogen Deficiency Before V8: The Window That Matters for Corn

Nitrogen deficiency in corn is visible from the air as early as V4-V5. Identifying and applying rescue nitrogen before V8 can recover most of the yield potential.