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Part D. Environment

1. 30Light: PPFD, DLI, spectrum and photoperiod Level 2 Compute DLI from PPFD and hours; know crop DLI targets
2. 31Choosing and sizing grow lights Level 2 Use efficacy (µmol/J) and cost per mol; size a fixture for an area (worked calc)
3. 32Temperature, humidity and VPD Level 2 Set day/night targets; compute VPD; understand tipburn and Ca links
4. 33CO₂ and air movement (coming) Level 2 Know ambient vs enriched CO₂ responses and when enrichment pays
5. 34Climate control: greenhouse versus indoor farm (coming) Level 3 Compare energy, light and control trade-offs