GreyHawk Index System

Scientific turf intelligence built for bermudagrass and other varieties

The GreyHawk Index System is a proprietary suite of multispectral turf indices engineered specifically for golf and sports turf. Built on the Agrowing 14‑band sextuple sensor, not a 5-band sensor, our indices read turf with scientific precision and translate that data into simple, superintendent‑ready actions.

Unlike generic NDVI maps, GreyHawk’s indices are region‑calibrated for the most demanding bermudagrass environments:

       (high humidity, high disease pressure, softer ET,  extreme heat, hydrophobic soils, rapid stress cycles)

Each region uses its own thresholds, ensuring accuracy, trust, and repeatability.

The Deeper Science Behind Turf Multispectral Imaging

Multispectral imaging works because turf reflects light in extremely predictable ways — and stress disrupts those patterns long before the human eye can detect anything. By capturing multiple narrow spectral bands, especially the expanded 14‑band set from Agrowing, you’re not just taking a picture… you’re measuring plant physiology.

What Makes It So Powerful

• Each band isolates a different biological signal. Chlorophyll absorption, pigment shifts, water content, cellular structure, and canopy density all respond differently to stress — and each shows up in a different wavelength.

• Stress changes reflectance before it changes color. Turf may look “green,” but the red‑edge and NIR bands already show chlorophyll decline or thinning.

• Multiple bands let you separate causes, not just detect symptoms. With enough spectral diversity, you can distinguish:

  • moisture stress vs. nutrient stress

  • traffic wear vs. heat stress

  • early disease indicators vs. natural variation

• Indices become far more accurate with more bands. NDVI and NDRE are just the beginning. With 14 bands, you can build proprietary, turf‑specific indices that outperform generic agricultural formulas.

• You get a physiological fingerprint of your turf. Every green, fairway, and field develops a spectral signature — and deviations from that signature reveal problems instantly.

Why You Care!

This isn’t just “better imagery.” It’s quantitative plant science, delivered from the air, at scale, with repeatability that no ground‑based scouting can match.

It means:

• earlier detection

• fewer surprises

• smarter treatments

• lower costs

• better playing conditions

And when paired with the Trinity Pro and Agrowing’s 14‑band sensor, GreyHawk delivers the highest‑resolution, most scientifically defensible turf intelligence available in the U.S.