Main site

Agriculture AI agent · Agronomy

Agronomy-Advisory Copilot (Evidence & Restriction Checks)

Assemble field history, soil and tissue tests, variety data and trial evidence into a sourced pack, checked against the nutrient plan and the label's rotational restrictions — the agronomist advises.

Typical delivery
4–6 weeks
Deployment
Your stack
The advice
Agronomist only
After launch
Agent Care

What this agent does

Assembles the evidence, does not advise

In

  1. 01

    Pull the field's history, soil and tissue tests, planting records and the current nutrient plan.

  2. 02

    Retrieve that variety or hybrid's own characteristics, and the trials and guidance behind each option.

Reason

  1. 03

    Read each soil result against the lab's own extraction method and the calibration that index belongs to.

  2. 04

    Track growth stage from planting and emergence records, and mark it inferred until confirmed in the field.

  3. 05

    Balance the plan against nutrients removed by the yields actually harvested, not by assumed ones.

Decide

  1. 06

    Stop an option that breaches a plan limit, a seasonal or buffer rule, or a herbicide plant-back interval.

  2. 07

    Route thin, conflicting or single-trial evidence to the agronomist rather than presenting it as settled.

Out

  1. 08

    Present each option with its sources, whose data each one is, and what the evidence does not cover.

  2. 09

    Retain the sources read, the checks run, the version of each guideline and every agronomist correction.

Product statement

The agent assembles, cites and checks. The recommendation to a grower is made by a qualified agronomist, and an option that fails a restriction check does not reach a grower.

Example workflow

One field question, end to end

  1. 1Question openedA field, a crop and a question from the agronomist, the grower or the season's plan
  2. 2Field record assembledRotation and residual history, soil and tissue tests, planting and emergence records and the nutrient plan
  3. 3Evidence retrievedThat hybrid's own characteristics, the approved guidance and the trials behind each option, with their sources
  4. 4Restrictions checkedPlan limits, seasonal and buffer rules, and label rotational and plant-back intervals for the fields in scope

No human action required

Stages 1 to 4 run without a person in the loop — assembly, retrieval and the restriction checks finish before an agronomist is asked to read anything. A restriction conflict ends that stretch on the spot.

5DecisionSplits on restriction conflicts and how far the evidence reaches
No conflict, evidence holds

Reaches the agronomist ready to read.

Conflict or thin evidence

Reaches the agronomist stopped and flagged.

Agronomist

Reads the assembled record, the cited evidence and the checks that failed, then decides what to advise.

Accept · Correct · Send back for evidence

Advised — handed back

  1. 6Pack filed to the adviserWritten to the farm record only where write access and policy allow; the recommendation field stays empty
  2. 7Outcome evaluatedCitation accuracy, restriction-conflict recall, agronomist overrides and where evidence ran thin, by crop

Overrides

What the agronomist changes is counted in the evaluation.

What should not run autonomously

Human approval stays in control

Outside the boundary — human approval required

8 items

  • Recommending a product, a rate or a timing.
    • Signing or amending a nutrient management plan.
    • Clearing an application inside a seasonal or buffer restriction.
    • Overriding a label's rotational or plant-back interval.

  • Automation boundary

    Agent acts unaided

    • ✓Assemble field history, rotation, soil and tissue tests and planting records.
    • ✓Retrieve variety characteristics, trial and extension evidence with their sources.
    • ✓Check every option against plan limits, restrictions and plant-back intervals.
    • ✓Stop a conflicting option and route thin evidence to the agronomist.

    Write actions run only inside the approval boundaries agreed during implementation. The advice is not one of them.

    • Ordering options by what the deployer sells.
    • Confirming a growth stage without a field observation.
    • Treating a single trial as settled evidence.
  • Changing the evidence sources or the restriction rules.

Example output

One field question, annotated

Everything the agent presents is attached to the source it was read from.

Advisory pack · single field question

Illustrative example
Field and crop
Home Piece — maize, year two
Question
Phosphorus rate for next crop
Soil test
Olsen P
Handed to
Agronomist — one option stopped
Confidence
88%
Recommendation
Not made by the agent

As received

The record and the question as they arrived, with the lab's own method and date.

Evidence used

  • Olsen index, this lab
  • Removal, three harvests
  • Two multi-site trials

Why one option stopped

The plant-back interval from last season's residual has not cleared for that crop.

What the score decides

Confidence says how far the evidence reaches on this field, not how strong the advice is.

Action

AcceptCorrectSend back for evidence

Value

Where AI adds value

The same four claims, placed at the point in the workflow where each one applies.

Where the value lands

Value 01 – 04

Every field question

From the agronomist, the grower or the season plan

03Assembly & citation

Apply the client's own agronomy

Use the farm's plan, the lab's own methods, the guidance you already accept and the trials behind each option.

01Approved path

Give the adviser the record first

History, tests, staging and evidence arrive assembled and sourced, so the visit starts on the question rather than on the paperwork.

02Human review

Catch the restriction on paper

A plan limit, a closed period or an unexpired plant-back interval is flagged before the option is advised, not after the crop is in the ground.

04

Build an evidence trail

Retain the sources read, whose data each one is, the guideline version, the checks run, the confidence and the agronomist's correction — on both paths.

Integrations

Typical integrations

Five system groups connect to the same agent. Which of them are in scope is decided in discovery.

  • Farm records & FMS

    • Operations Center
    • FieldView
    • Trimble Ag
    • field-record APIs

  • Soil & tissue labs

    • Lab portals
    • analysis reports
    • Method and calibration metadata

  • Plans & restrictions

    • Nutrient plans
    • label databases
    • Buffer and setback maps

Agent

Agronomy advisory & evidence

  • Assembles the record
  • Cites the evidence
  • Stops conflicts

  • Evidence sources

    • Extension guidance
    • variety trial data
    • Licensed references

  • Observability & evaluation

    • OpenTelemetry
    • Langfuse
    • Supported monitoring/evaluation sources

Integration availability depends on the client's existing systems and API access.

Agent controls

Six layers between the model and the grower

Each control wraps the one inside it. A pack clears every layer before an agronomist reads it, and the advice itself sits outside all six.

L6 · Outermost — last line of defence

Inward → L1 · closest to the model

L6Rollback / safe modeReturn assembly to the adviser if evaluations or production signals degrade.Roll back
L5TraceabilityRecord the sources, guideline versions, checks, action and correction.Record
L4Agronomist gateThe recommendation to a grower stays with a qualified adviser.Gate
L3Method checksA soil result is read only against the method and calibration it came from.Verify
L2Citation bindingEvery claim carries the source it was read from and whose data it is.Cite
L1Restriction gateA plan limit, a seasonal rule or a plant-back interval stops the option.Stop
Model coreOptions assembled — cited evidence, the soil and stage reading, the restriction checks and coverage confidence
L1 – L2
Decide whether an option may stand
L3
Decides how a soil result may be read
L4 – L5
Keep advice with a person and the trail intact
L6
Pulls automation back when signals degrade

How Nestack evaluates it

Evaluate the whole pack — not only the option the agronomist takes.

Coverage runs the whole depth of the workflow, and every layer is cut by slice.

Surface — the sourced pack the agronomist opens

  1. E1Final-output evaluationDoes every claim trace back to the source it cites?
  2. E2Step-level evaluationWas the soil result read on its own method, and the growth stage read right?
  3. E3Tool evaluationDid it read the correct field, plan, label and lab report?
  4. E4Restriction-conflict recallWas every plan, seasonal and plant-back conflict raised?
  5. E5Slice evaluationHow does citation accuracy change across crops and regions?
  6. E6Business outcomeHow often did the agronomist override, and for what reason?

Floor — the recommendation the agronomist signs

Failure modes

Where each failure originates in the agent

Seven failure modes plotted against the five stages of the agent lifecycle.

Agent lifecycle

Direction of processing →

  1. 01 · Retrieval

    1 mode

    • AG-01

      Wrong hybrid's characteristics

      A rating from the wrong hybrid, or another firm's scale.

    Stage gathers

    The field record, the tests, the plan and the evidence

  2. 02 · Reading

    2 modes

    • AG-02

      Soil test read off-method

      An index read against another extraction's calibration.

    • AG-03

      Growth stage inferred wrong

      Lost lower leaves put the stage a leaf or two out.

    Stage reads

    The soil method, the growth stage and the variety data

  3. 03 · Checking

    2 modes

    • AG-04

      Plant-back interval missed

      A residual applied last season still restricts that crop.

    • AG-05

      Seasonal or buffer breach

      The option sits in a closed period or inside a setback.

    Stage tests

    Each option against the plan and the label restrictions

  4. 04 · Output

    1 mode

    • AG-06

      Single trial cited as settled

      One site-year is presented as an established result.

    Stage returns

    The cited pack and the flags the agronomist reads

  5. 05 · Change / Version

    1 mode

    • AG-07

      Evidence set tilts to a seller

      A source change moves which trials the agent can read.

    Stage tracks

    Model, prompt, guideline and evidence-source changes

  • Sev-1 · the option breaches a plan or a label
  • Sev-2 · the pack the agronomist reads is wrong
  • Sev-3 · the evidence is weaker than it looks
See the complete Agriculture failure-mode catalogue

Affected slices

Evidence is thinnest where the crop is smallest

Citation accuracy and restriction recall can look acceptable in total while a few crops and field types carry most of the thin evidence and most of the agronomist's corrections. Nestack reports performance by slice, not only in total.

Slice performance — reported separately, not only in aggregate

Illustrative example
SliceFailure rateLiftLift vs. thresholdStatus
Minor and specialty crops6.0%3.5×Review
Out-of-region trial evidence4.6%2.7×Review
Residual carryover fields3.3%1.9×Watch
Repeat fields, full history1.2%0.7×Normal

Bar: lift in citation-and-restriction defect rate · scale 0–4.0× · tick marks the 2.0× review threshold

2 of 4 slices over threshold

Evidence-linked improvement

Evidence that did not hold is withdrawn from every pack

A citation that turns out not to support the claim is not closed when it is fixed for one field. It leaves the source set, and the packs that leaned on it are re-run.

Improvement cycle · five stages

Switchback — the path turns at Improve and returns at Learn

  1. 01

    Detect

    Citation accuracy, restriction recall and override rate are read by crop and region, never in total.

  2. 02

    Diagnose

    Walked back through the source read, the method used, the stage inferred and the check that did not fire.

  3. 03

    Improve

    An agronomist re-approves the source set, method rule or restriction check before it ships, versioned.

  4. 04

    Verify

    Proof is a set of held-out questions from that crop, the ones that failed included.

  5. 05

    Learn

    That question is kept as a standing test, and the advisory runbook carries the changed rule.

  6. Learn → Detect

    The return edge. Adding or dropping an evidence source changes what every later pack may cite, so an agronomist signs that change before it ships.

Typical build scope

Twelve workstreams across six weeks

The build scope read against the delivery timeline. Week structure follows the six-week plan — discovery, records and methods, evidence and checks, evaluation, integration, then production validation and handover.

Workstream

Week 1Week 2Week 3Week 4Week 5Week 6

  1. 01Workflow discovery and automation-boundary definition.Week 1
  2. 02Farm-record, FMS and lab-report sources.Week 1, Week 2
  3. 03Nutrient plans, restrictions and buffers.Week 1, Week 2
  4. 04Soil and tissue calibration mapping.Week 2
  5. 05Field-record assembly and rotation history.Week 2, Week 3
  6. 06Evidence sources and citation binding.Week 3
  7. 07Growth-stage tracking from planting records.Week 3, Week 4
  8. 08Plant-back and seasonal restriction checks.Week 4
  9. 09Citation and restriction-recall tests.Week 4, Week 5
  10. 10Thin-evidence and minor-crop slice testing.Week 5
  11. 11Agronomist review and record write-back.Week 5, Week 6
  12. 12Observability, deployment and Agent Care handover.Week 6

12 workstreams · 6 weeks · bar shows the weeks a workstream is active — several run in parallel

Final scope and sequence confirmed in discovery

Engagement tiers

What each tier includes

Rows are the capabilities named in each tier's scope. Higher tiers include everything below them.

Capability✓ in scope · — not at this tierPilotOne crop, one question typeProductionProduction farm-record integrationAdvancedMulti-crop / multi-region
Introduced at Pilot
Assembled field record✓✓✓
Cited evidence with its sources✓✓✓
Restriction and plant-back checks✓✓✓
Advice given by the agronomist✓✓✓
Baseline evaluation✓✓✓
Introduced at Production
Client plans and restriction rules—✓✓
Soil and tissue method handling—✓✓
Supplier-neutral evidence ranking—✓✓
Observability and evaluation—✓✓
Introduced at Advanced
Minor-crop and thin-evidence slices——✓
Multi-region and enterprise controls——✓
Build priceFrom $5,000From $8,000Custom quote
Final build price
Confirmed after discovery based on record and lab integrations, crops and regions in scope, restriction sources, evidence licensing, approval controls and deployment requirements.
Separate from build
Build pricing is separate from recurring Agent Care, which covers managed monitoring, evaluations, incidents and verified improvements after launch.

What we need from you

What you bring, and what we build with it

Each input maps to a piece of build scope and a week in the delivery timeline.

  1. 01Field records, rotation history and your current nutrient plans

    Field-record assembly, plan limits and restriction rules

    Week 1

  2. 02Soil and tissue reports with the lab and method behind each one

    Soil and tissue method and calibration mapping

    Week 2

  3. 03Access to your FMS, lab portals and label or restriction sources

    Farm-record, FMS and lab-report source assessment

    Week 2

  4. 04The evidence you already accept, and what you will not cite

    Evidence sources, licensing and citation binding

    Week 3

  5. 05Planting, emergence and field-observation records

    Growth-stage tracking from planting and emergence records

    Week 3

  6. 06Recommendations that went wrong, including the near misses

    Evaluation suite, regression cases and failure-mode testing

    Week 4

  7. 07Named agronomists to review and sign the advice

    Agronomist review workflow, then pilot packs and production validation

    Weeks 5–6

Nothing else is required

Deployment, documentation and Agent Care handover are ours.

Delivery timeline

Four phases across six weeks

Phases are drawn over the weeks they occupy. Week 5 carries both the thin-evidence slice testing and the first packs an agronomist works from.

Phase

W1

W2

W3

W4

W5

W6

  1. DiscoveryW1
  2. BuildW2 – W3
  3. EvaluateW4 – W5
  4. Pilot & LaunchW5 – W6

Week focus

W1Field records, nutrient plans and restriction rules mapped

W2Lab methods, source access and the first assembled record

W3Evidence retrieval, citation binding and stage tracking

W4Restriction-conflict recall and citation-accuracy testing

W5Minor-crop slices, first supervised packs and corrections

W6Agronomists advise from live packs, then Agent Care starts

Reading the band
Restriction-conflict recall is tested in week 4, before any pack reaches an agronomist in week 5. No option goes to a grower on the agent's word at any point.
At the end of W6
Packs have run alongside the way your agronomists work today and been read by the people who sign the advice, then Agent Care takes over monitoring.
Duration
Six-week plan shown · typical delivery 4–6 weeks depending on scope confirmed in discovery.

Next step · Agriculture AI agent

Build an advisory copilot around your agronomists.

Show us the field records, plans and lab reports you work from, the evidence you already accept, and who signs a recommendation to a grower. We'll assemble one pack against your own sources and run a season of past recommendations back through the restriction checks.

Typical delivery
4–6 weeks
Deployment
Your agronomy stack
The advice
A qualified agronomist, always
After launch
Agent Care available

Nestack Agents · Agronomy advisory & evidence

AGT-AGR-01 · Agent Care available after launch

Build an agronomy-advisory copilot

Four questions so the call starts from your actual setup — then pick a time that suits you.

About you
Your setup

No obligation. We’ll map the workflow, name the automation boundary and tell you if an agent is the wrong answer.