Agronomic consequence of verified environmental truth

From verified environmental truth to bounded field consequence.

WX-Ag is the agronomic and soil-state extension of W-X. It consumes W-X environmental truth and applies deterministic, uncertainty-explicit models to evapotranspiration, atmospheric demand, soil-water balance, root-zone state, saturation, anoxia proxies, crop-stage stress, pest-conducive conditions, and carbon-accounting scaffolds. It does not replace agronomists, field scouting, agricultural extension, irrigation professionals, or farm-management judgment.

What this is not

WX-Ag does not replace agronomists, field scouting, agricultural extension, irrigation professionals, or farm-management judgement. It issues no directive: no page here tells anyone to irrigate, spray, plant, or harvest.

W-X = environmental truth. WX-Ag = optional agronomic consequence. WX-Ag does not define environmental truth independently of W-X.

Live field-consequence console

This calls the same server engine that produced every recorded figure on this page: lib/wxag/et0.js and lib/wxag/soilWaterBalance.js, chained through W-X truth. No formula, no crop-coefficient table, and no soil-balance term runs in this browser.

ScenarioSix of these presets are refusal demonstrations: selecting one sends genuinely stale, contradictory, or unsupported inputs through the real engine. "Custom" uses every field below instead of a preset.

Coarse cell

Air temperature (°C)

Relative humidity (%)

Daily minimum temperature (°C)Used for ET0's Hargreaves-Samani path, which needs a diurnal range, not a single instant.

Daily maximum temperature (°C)

CropResolves to a published FAO-56 Table 12 coefficient on the server. This is a citation of standard reference agronomy, not a LAKANA calibration, and no numeric coefficient is ever accepted from the browser.

Growth stage

Field capacity (fraction)

Permanent wilting point (fraction)

Root depth (mm)

Initial available water (fraction)

Daily precipitation (mm)

Saturated hydraulic conductivity (mm/hr)

Drainage class

Slope classDeclared context only. This engine's runoff term is a rainfall-partition proxy, not a slope-routed hydrology model.

Window (days)

This console requires JavaScript to call the server. Without it, no result is shown — there is no browser-side balance to fall back to.

Live ensemble console

Submit a field scenario and the server runs an ensemble over it, then returns a summary. The sampler, the seed, the distributions, the per-draw values, and the numeric threshold behind the exceedance label all stay on the server. What arrives here is five numbers and their limits.

This console requires JavaScript to call the server. Without it, no summary is shown — there is no browser-side ensemble to fall back to, by design.

What the ensemble does not become

Sampling a modeled water balance produces a spread of modeled values. It does not produce a measurement. The root-zone state stays MODEL-INFERRED at every percentile, and a narrow spread means the inputs agreed, not that the soil was observed.

WX-Ag reports consequence. It does not issue directives, and it does not replace an agronomist.

Upstream W-X truth

Recorded fixture — not a current engine execution

This upstream truth object, and every derived figure in the sections below, was computed by the server engine when this page was generated, at a fixed clock of 2026-08-02 19:46 UTC, and the output was written into the page. It is reproducible and it is real engine output, but it is a recording. It does not update, and it is not evidence of current conditions.

For output computed at the moment you ask for it, use the live console. That console calls the server on every request; the mathematics never runs in your browser.

This is the same truth object the Observatory published and SSI consumed — not a second weather state computed here.

Truth state: VALID Cell: cell:704:-1949:1984111 Truth ref: wxtruth:cell:704:-1949:1984111:1785700000000

Air temperature

30.9 °C

Relative humidity

52 %

Vapor-pressure deficit

2.144 kPa

Wind speed

3.1 m/s

When W-X is silent, WX-Ag stops

Run against the contradictory-source scenario, WX-Ag returns: WX-Ag requires current environmental truth; W-X is SILENCE_CONTRADICTION.

It does not substitute a default, a last-known value, or a seasonal average.

Field configuration

Every parameter carries the class of source it came from, because a texture-table value and a measured retention curve do not deserve the same confidence.

Parameter	Value	Source class	Consequence
Field capacity	0.31 v/v	DATASET-PARAMETERIZED	Uncertainty band of ±25% propagates into every storage figure below.
Permanent wilting point	0.15 v/v	DATASET-PARAMETERIZED
Root depth	1000 mm	DATASET-PARAMETERIZED
Available water capacity	160 mm	DERIVED	Computed from the three rows above.
Crop coefficient	1.15	FAO-56 Table 12	Tabulated for a standard mid-season canopy; a stressed canopy departs from it.

The ET₀ truth contract

Reference evapotranspiration is quoted constantly without saying which method produced it. The methods are not interchangeable, so this engine names the one it used and reports what was missing for the stronger path.

Penman-Monteith (selected)

7.29 mm/day

Method: FAO-56 PENMAN–MONTEITH SUPPORT PATH
Uncertainty: ±10%
Why chosen: all Penman-Monteith inputs were available

Hargreaves-Samani (fallback path)

6.59 mm/day

Uncertainty: ±20%
Limitation: Hargreaves-Samani is a temperature-based approximation; it does not use measured humidity, wind, or radiation.

Validation-only material

REFUSED

Reason: the supplied ET0 material is validation-only and cannot be used as runtime support

ET₀ is not ET_c

Without a crop coefficient

UNAVAILABLE

ETc unavailable — crop-specific support incomplete

ET0 is reference demand for a standard grass surface and is never presented as crop water use.

With a supported coefficient

8.38 mm/day

K_c: 1.15 (FAO-56 Table 12, mid-season)
Uncertainty: ±25% — wider than ET₀ alone

ET0 = reference demand for a standard 0.12 m grass surface ETc = Kc x ET0 (crop-specific, requires a supported coefficient) Reference demand is never relabeled as crop water use.

Soil-water balance

S(t+1) = clip( S(t) + P + I - ETa - D - R , 0 , AWC )

Four scenarios stepped through the real balance. Storage is a modeled quantity throughout.

Scenario	Start (mm)	End (mm)	Depletion (mm)	K_s	ET_a (mm)	Infiltration (mm)	Runoff proxy (mm)
Nominal	140.0	131.6	28.4	1.000	8.38	0.0	0.0
Drought (deep depletion)	28.0	25.1	134.9	0.350	2.93	0.0	0.0
Flood / anoxia	150.0	160.0	0.0	1.000	8.38	27.0	41.0
Compound heat-drought	40.0	34.3	125.7	0.500	5.66	0.0	0.0

What these numbers are

Modeled root-zone water balance. Not a soil-moisture measurement and not field-validated.

Root-zone storage is MODEL-INFERRED — a modeled balance, not a soil-moisture measurement.
Runoff carries the engine label RUNOFF PRESSURE PROXY — not a measured discharge.
Deep percolation is an estimate; drainage timing is not resolved at this step length.

Consequence states

Drought pressure

At 135 mm depletion the stress coefficient falls to 0.350, reducing actual ET to 2.93 mm/day against a demand of 8.38 mm/day.

Unmet demand: 5.45 mm.

Flood and anoxia

Of 68 mm input, 27 mm infiltrated and 41 mm became runoff pressure. Profile saturated: yes.

Oxygen-deficit proxy after 34 h saturation: SUSTAINED.

Compound heat-drought

Elevated demand against an already-depleted profile: K_s 0.500, deficit 5.66 mm.

Pest-conducive proxy

PROXY

Temperature and humidity windows with degree-day accumulation indicate conditions conducive to pest development. This is not detection and not prediction.

Carbon / SOC

ACCOUNTING SCAFFOLD

A structural scaffold for future carbon accounting. Not carbon-credit verification, not certified sequestration, not market-grade accounting.

This is not a measurement of root-zone oxygen and does not predict crop loss.

OXYGEN-DEFICIT PROXY — derived from modeled saturation duration, not from a measured root-zone oxygen concentration.

Three lenses on the same run

Farmer / operator lens

The modeled root zone holds about 132 mm of plant-available water against a capacity of 160 mm. Atmospheric demand today is about 8.4 mm.

Confidence is limited by the soil parameters, which come from a texture class rather than a local sample. A measured retention curve for this field would narrow the band most.

This lens describes state. It does not tell anyone what to do.

Scientific lens

ET₀ by FAO-56 PENMAN–MONTEITH SUPPORT PATH at 7.288 mm/day (±10%). ET_c = K_c 1.15 × ET₀ = 8.381 mm/day (±25%).

Water-stress coefficient follows the FAO-56 form with readily-available water at 80 mm. Storage bounded to [0, 160] mm.

Declared assumptions: daily step, soil heat flux taken as zero at the daily scale, single-layer root zone, texture-class hydraulic parameters.

Audit lens

01 CivOS Reported sensing and compute availability for the observation window. 02 W-X Supplied environmental truth state VALID.

Environmental truth reference: wxtruth:cell:704:-1949:1984111:1785700000000 — the same object consumed by SOS and SSI.

W-X = environmental truth. WX-Ag = optional agronomic consequence. WX-Ag does not define environmental truth independently of W-X.

Execution trace

01 CivOS Reported sensing and compute availability for the observation window. 02 W-X Supplied environmental truth state VALID.

DEMO EXECUTION — NOT EMPIRICAL PROOF — this trace records a deterministic public-safe computation over declared inputs. It is not evidence of a real-world outcome.

Evidence and claim boundary

Allowed

Cite as a deterministic public-safe agronomic computation over declared inputs and a named W-X truth object.

Forbidden

Not a yield forecast, not a crop-loss certification, not an insurance or lending basis, not an agronomic directive, and not field validation.

Maturity

Root-zone state MODEL-INFERRED. Anoxia and pest outputs remain proxies. SOC remains an accounting scaffold.

Architecture: WX-Ag chapter · Proof structure: WX-Ag Proof Library section · Upstream: W-X Observatory