Vigil Earth · Forensic Retrospective · Oil Palm

Odisha Palm Oil Plantation
Disease & Yield Forensic Report

Satellite-derived canopy anomaly analysis · Target season 2025 · Baseline 2021–2024 · Crop: Oil Palm (Elaeis guineensis) · 10 acres

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Retrospective Finding — Damage detectable 8.5 months before harvest

First satellite stress signal: August 20, 2025. Confirmed second-wave event: October 15, 2025. Actual FFB yield at harvest (May 1, 2026): 5.5 tonnes from 10 acres. Had Vigil Agro been active on this farm, an alert would have been issued in August 2025.

First Stress Signal

Aug 20

2025 · NDVI 0.37

Confirmed Second Event

Oct 15

2025 · NDVI 0.39

Actual FFB Yield

5.5 t

From 10 acres · May 2026

Scenes Analysed

246

of 300 discovered · 2021–2025

Farm context

What the satellite archive tells us

Before any stress analysis, the satellite archive establishes the plantation's history — including a planting date that differs slightly from the owner's recollection.

Planting date — satellite confirmed

March–April 2022

NDVI collapsed from 0.57 (Jan 2022) to 0.15 (Apr–May 2022) — the satellite signature of land clearance and transplanting. Owner recalls "late 2022" — likely the seedling purchase date, not field transplanting.

Plantation age at harvest

~4 years

Year-4 oil palms are in the juvenile-to-productive transition. Healthy NDVI range for this stage: 0.35–0.65 (literature). The October 2025 reading of 0.39 falls in the lower stress zone for this age.

Monsoon blackout window

47 days

June 20 – August 6, 2025. Zero valid satellite observations. Odisha monsoon (28–34°C, RH >85%) during this window creates ideal conditions for Rhinoceros Beetle, Bud Rot, and Ganoderma. The attack likely began here.

Season outcome

Yield & revenue — May 2026 harvest

Figures reported by the plantation owner. No historical benchmark has been established for this farm — comparisons below use published literature ranges only, clearly labelled as such.

Metric	Value
Plantation area	10 acres
Primary crop	Oil Palm — FFB (Fresh Fruit Bunches)
Intercrop	Banana (partial blocks, reported)
Harvest date	May 1, 2026
Actual FFB yield	5.5 tonnes
Farmgate price (FFB)	₹12 / kg
Actual gross revenue	₹66,000

📊

Literature benchmark — for context only

Published range for 4-year oil palms under Indian conditions: 2.0–4.0 tonnes / acre, suggesting a healthy 10-acre plantation would typically yield 20–40 tonnes in a normal season.

Actual yield of 0.55 t/acre is well below this range. This is consistent with the significant stress events visible in satellite data from August–October 2025.

No owner-confirmed historical yield exists for this farm. The literature range above cannot be used as a formal loss-calculation baseline without verified farm records from prior seasons.

Vigil Agro subscription: ₹12,000 / year for 10 acres (₹100 × 10 × 12). A single season of early detection and targeted treatment could recover a substantial portion of the yield shortfall.

Forensic timeline

Year-by-year satellite record · 2021 to harvest

246 valid Sentinel-2 scenes analysed. Events are derived from satellite data only unless otherwise stated.

Pre-plantation

Jan – Dec 2021

Existing vegetation · NDVI 0.40–0.70

Dense established vegetation detected before palm planting. High NDVI values (0.40–0.70, peak in Aug–Oct 2021) suggest prior agricultural use or natural regrowth. This forms the pre-planting baseline.

Planting event confirmed

Jan – May 2022

NDVI collapses 0.57 → 0.15 PLANTING

Sharp NDVI collapse between January (0.57) and April–May (0.15) is the satellite signature of land clearance and transplanting. Newly transplanted oil palm seedlings have near-bare-soil NDVI. Satellite-confirmed planting: March–April 2022.

Year 1 — establishment

Aug – Dec 2022

Young palms establishing · NDVI rising to 0.44

Post-planting canopy recovery visible from August 2022. NDVI rises from 0.18 to 0.44 as fronds expand. Normal and expected for year-1 palms.

Year 2 — juvenile growth

Full year 2023

Canopy expanding · NDVI 0.17–0.41 NORMAL

No anomaly detected. NDVI in the expected range for year-2 palms. Monsoon cloud gaps limit June–August imagery, as expected for Odisha.

Year 3 — canopy development

Full year 2024

NDVI rising to 0.50 · No anomaly NORMAL

Consistent maturation. NDVI rises from 0.32 (January) to 0.50 (October–November). The 2024 trajectory establishes the healthy young plantation reference.

Year 4 — pre-damage healthy

Jan – Jun 2025

NDVI rising normally · 0.41 → 0.53 HEALTHY

Strong canopy in early 2025 — NDVI 0.41 in January, climbing to 0.53 by June. The crop was in good condition before the monsoon began.

Monsoon satellite blackout

Jun 20 – Aug 6, 2025

No valid imagery · 47-day cloud blackout

Zero valid Sentinel-2 observations during this window. Temperature 28–34°C + relative humidity >85% creates ideal conditions for Rhinoceros Beetle, Bud Rot, and Ganoderma. The attack most likely initiated here.

⚠ First damage signal

August 20, 2025

NDVI drops to 0.37 — first post-monsoon observation NDVI 0.37

First clear-sky pass after monsoon reveals a significant decline from the pre-monsoon peak of 0.53. A 0.16-unit NDVI drop in a single monsoon season is abnormal for a healthy young palm plantation.

This is the earliest date on which Vigil Agro could have issued an alert had the system been active on this farm.

Partial recovery

September 2025

NDVI recovers to 0.52–0.55

NDVI partially recovers. Surviving palms stabilising. Pre-monsoon peak not re-achieved. The October relapse that follows confirms ongoing attack.

⚠ Confirmed second-wave stress

October 15, 2025

NDVI drops again to 0.39 NDVI 0.39

NDVI dips sharply again to 0.39 in mid-October — lowest post-monsoon reading. The double-dip pattern (August drop → September recovery → October drop) is characteristic of an ongoing biological attack, not a one-time event. October is within the critical FFB formation period for oil palm.

Survivor effect

Nov – Dec 2025

NDVI peaks at 0.57 — highest ever for this field SURVIVOR EFFECT

High late-season NDVI despite reported yield loss is a known disease signature. Surviving palms grow more vigorously with extra light, nutrients, and water from adjacent dead palms. The spatial map below reveals the patchwork concealed by the field average.

Harvest — damage confirmed

May 1, 2026

5.5 tonnes FFB harvested from 10 acres

Owner confirms harvest significantly below expectations. Satellite retrospective confirms stress signals began at least 8.5 months before harvest.

Satellite analysis

NDVI, EVI & NDRE forensic trajectories

Orange line = 2025 target season · Dashed blue = 2021–2024 baseline mean · Shaded band = baseline P25–P75 · Grey shading = monsoon cloud blackout · Red dots = actual observation dates

Figure 1 — NDVI · Primary health signal

August 20 and October 15 dips are the primary forensic markers. Pre-damage peak: 0.53 (June 2025). The baseline appears low because it includes pre-planting years (2021–2022 bare land) — 2025 values are above this mixed baseline while still showing absolute stress for a year-4 palm.

Figure 2 — EVI · Active photosynthesis

EVI is more sensitive to canopy structure than NDVI. An EVI decline leading NDVI by several weeks indicates water or structural stress.

Figure 3 — NDRE · Chlorophyll & nitrogen

NDRE is the earliest indicator of chlorophyll-level stress. In Ganoderma, NDRE typically declines 4–12 weeks before NDVI.

Figure 4 — Composite stress signal · NDVI + EVI + NDRE combined

Z-score across all three indices. Simultaneous decline across multiple indices strengthens stress interpretation confidence.

Spatial analysis

Where in the field is the damage?

NDVI anomaly map comparing 2025 against the 2021–2024 baseline. Red = below baseline · Green = above baseline · White = no valid data.

Figure 5 — NDVI anomaly map

Red zones = 0.10–0.15 NDVI below baseline (stressed or dead palms). Green zones = above baseline (healthy surviving palms).

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Key finding — biological attack pattern

A uniform stress (drought, heat) would produce uniform colour across the whole field. This map shows patchy, zone-specific red areas concentrated in the upper-left block and right-edge columns, with healthy green in the centre-bottom.

Patchy spatial heterogeneity within a single 10-acre field is the satellite fingerprint of a biological attack spreading from entry points.

👣

Walk these zones first

Upper-left block and right-edge rows show the strongest negative anomaly. Inspect for:
· Trunk lesions or fungal brackets at base (Ganoderma)
· V-shaped cuts in young fronds at crown (Rhinoceros Beetle)
· Rotting bud tissue at the growing point (Bud Rot)
· Yellowing fronds drooping from mid-canopy downward

Possible stress types by pattern

Organism	Index signature
Ganoderma BSR	NDRE drops before NDVI. Patchy spread.
Rhinoceros Beetle	EVI drops before NDVI. Crown damage.
Bud Rot	Rapid NDVI collapse on individual palms.
Drought	Uniform EVI decline. Whole field.

Satellite cannot confirm the specific organism. Ground inspection + lab sample analysis required.

Recommendations

What to do now & before the 2026 monsoon

🔴 Immediate — this week

Urgent

Remove and destroy dead palms

Dead palms are a disease reservoir and insect breeding site. Remove before the next monsoon. GPS-mark each removed palm to validate against the satellite spatial map.

Urgent

Collect samples from upper-left block for lab testing

Send frond and trunk samples to the nearest KVK or agricultural university. Identify the pathogen before selecting any treatment.

🟢 Pre-monsoon — May–June 2026

May 2026

Pre-monsoon insecticide ring treatment at trunk base

Rhinoceros beetle and stem borers are most accessible before monsoon. Apply chlorpyrifos or imidacloprid at palm base before June rains begin.

May 2026

Trichoderma biocontrol application around root zone

If Ganoderma is confirmed or suspected, Trichoderma harzianum soil application pre-monsoon can reduce fungal spore load before peak humidity season.

June 2026

Activate Vigil Agro satellite monitoring for 2026 season

The first post-monsoon satellite pass (August 2026) will immediately show if the same stress pattern is returning — giving 6–8 months to act before the next harvest. Cost: ₹12,000 / year for 10 acres.

Data confidence

What this analysis confirms — and what it cannot

Finding	Confidence	Basis
Planting date: March–April 2022	HIGH	Unambiguous NDVI collapse event in satellite archive
First stress signal: August 20, 2025	MODERATE	Actual onset was during Jun–Aug blackout; Aug 20 is first confirmable date
Spatial pattern: upper-left and right-edge most affected	MODERATE	Field is only 10 acres (~550 pixels at 10m) — pixel noise has more impact at this scale
Stress type: biological attack (not drought)	MODERATE	Patchy spatial pattern and double-dip temporal signature support this; not confirmed
Specific pathogen or insect species	CANNOT CONFIRM	Requires ground inspection and laboratory sample analysis

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To improve confidence in future reports

· Confirm exact locations of dead palms (GPS mark) to validate spatial map
· Provide full 10-acre boundary polygon — current KML covers 9.1 acres
· Submit frond/trunk samples for pathogen identification
· Share any historical yield records from prior seasons to establish a farm-specific benchmark

Odisha Palm Oil Plantation Disease & Yield Forensic Report

🔴 Immediate — this week

🟢 Pre-monsoon — May–June 2026

Odisha Palm Oil Plantation
Disease & Yield Forensic Report