Grid sampling and VR prescriptions
2.5-acre grids, organic matter maps and lime or phosphorus plans exported to your monitor.
Independent agronomy · Des Moines, Iowa
Decisions backed by soil maps, not slogans.
Fieldline Advisory helps row-crop and diversified farms improve margin per acre without betting on a single input brand. We combine grid soil sampling, variable-rate plans, on-farm trials and lender-ready budgets. Clients keep every spreadsheet, map layer and trial protocol when the engagement ends.
Serving Iowa, Nebraska and southern Minnesota since 2014.
Evidence you can take to the bank
Every recommendation ships with assumptions, costs and a field checklist your crew can follow.
Drone scouting with stand counts
Weekly flights in season with emergence maps and weed pressure heat layers shared in your portal.
On-farm trial design
Split-field nitrogen and biological trials with harvest weigh-offs and break-even math.
Cover crop planning
Species mixes matched to your rotation, termination windows and equipment constraints.
How an engagement runs
- 01
Discovery and data pull
We import three years of yield, fertility and input invoices before stepping on the farm.
- 02
Field walk and crew interview
We talk to operators about compaction, drainage and the realities of your window.
- 03
Plan and trial setup
Prescriptions and trial flags delivered with cost ranges and risk notes.
- 04
Harvest review
We reconcile yield maps, trial weights and actual invoices to update next year's plan.
Recent client results
West Fork Farms
Lime VR saved $11/acre
Same yield, fewer tons applied
Fertility
Blue River Dairy
Cover mix cut erosion 40%
Measured on tile outlet monitoring
Cover crops
Marshall custom
N trial proved 18 lb savings
Validated with weigh wagon
Trials
Grower voices
“They showed my lender a map and a budget, not a brochure. Refi closed because of it.”
“Trial flags were easy for my nephew to follow in the combine. We kept the protocol.”
“Cover crop plan matched the drill we actually own. That sounds small, it saved a week.”
Book a 30-minute intro
Tell us about your operation and we will send a calendar link.
Fieldline notes
Monthly trial results and fertility commentary. No product ads.
Working together
Do you sell inputs?
No. We are fee-only and disclose any speaking fees from manufacturers.
Can you work with my co-op agronomist?
Yes. We often split grid sampling and prescription writing.
What data do I keep?
All maps, spreadsheets and trial protocols belong to you.
Do you consult organic farms?
Yes. We certify plans against your organic system plan.
How fast can you start?
Intro calls happen within a week. Grid sampling usually lands two weeks after you sign the scope letter.