This topic covers the basics of greenhouse management, including the importance of greenhouses, types of greenhouses, and the benefits of controlled environment agriculture.
Introduction to Greenhouse Management
Key concepts, essential practices, and practical tips for running a productive greenhouse.
| Aspect | Description |
|---|---|
| Definition | A controlled‑environment structure that modifies temperature, humidity, light, and airflow to optimize plant growth. |
| Primary Goals | • Extend growing seasons • Increase yields • Protect crops from pests, weather, and diseases |
| Common Types | • Glass – high light transmission, expensive • Polycarbonate – durable, good insulation • Plastic film (PE, poly‑film) – inexpensive, replaceable • High‑tech (hydroponic, vertical) – integrated climate and nutrient systems |
| Parameter | Ideal Range (varies by crop) | Control Methods |
|---|---|---|
| Temperature | Day: 18‑30 °C; Night: 10‑18 °C (cool‑season) Warm‑season: 20‑35 °C day, 15‑20 °C night |
• Heating (gas, electric, hot water) • Cooling (ventilation, evaporative pads, shade cloth) |
| Relative Humidity (RH) | 50‑80 % (most vegetables) | • Ventilation, fogging, dehumidifiers |
| Light / Solar Radiation | 12‑16 h photoperiod for most veg; supplemental light 200‑400 µmol m⁻² s⁻¹ when needed | • Shade cloth, blackout curtains, LED/HID supplemental lighting |
| CO₂ Concentration | 400‑1200 ppm (enhanced growth) | • CO₂ generators, bottled CO₂, compost respiration |
| Airflow | Gentle, uniform circulation; avoid stagnant zones | • Fans, circulation ducts, inlet/outlet vents |