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FIELD MANUAL · ED. 01
2026-06-04 · 53 SPECIMENS LOGGED
STATUS: OPERATIONAL
ROOTLESS
FARM // FIELD MANUAL
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// SECTION 02 — INSTRUMENT
VPD Calculator
Compute Vapor Pressure Deficit from temperature, humidity, and leaf delta.
Air °C
RH %
Leaf Δ°C
VPD
0.85 kPa
Late veg / early flower ideal
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VPD Calculator · Rootless Farm