Precision horticultural climate engineering parameters, solar Daily Light Integral (DLI) curves, seasonal thermal screen deployment strategy, and heating/cooling load calculations for Leamington / Kingsville, Ontario, Canada (Humid Continental (Dfa)).
In Leamington / Kingsville, Ontario, Canada, natural solar Daily Light Integral transitions from 8-14 mol/m²/day during winter solstice to 40-48 mol/m²/day at summer peak. For commercial crops like High-Wire Tomato, Long English Cucumber, Pepper, target canopy DLI requires dynamic screen management to avoid photoinhibition during midday radiation spikes exceeding 850 W/m².
Screen Specification: Double Energy Screen (>=55% Heat Retention, R-value 2.2)
Primary Cooling Strategy: Roof Vents + LED Heat Recovery
Maintaining positive day-night temperature differential (DIF) and nighttime dehumidification minimizes condensation on cold structural glass surfaces, suppressing Botrytis and powdery mildew spore viability.
Major protected cropping varieties grown at scale in this regional cluster: High-Wire Tomato, Long English Cucumber, Pepper.