GreenhouseFunctions & MaintenanceHorticulture II: 7.01-9.02

Greenhouse effect

•The way greenhouses collect and store heat from the sun.

•Radiant energy warms the greenhouse and its contents.

•Greenhouses lose heat through the plastic, glass, etc. and additional heat has to be provided especially in winter.

So Why Have a Greenhouse?

•To provide a protective environment for crop production.

Greenhouse TypesGable Roof can be brought together by ridges

TemperatureControlling

•Heat & Air

•Heat is the 2nd highest expense after labor

Controls

•Thermostat

•Aspirated Thermostat

•Thermistor•Exhaust Fan

•Cool Cell

•Cool Cell Louver

•Sump Pump/Tank

•Heater

•Roof Vent

LightControlling

•Amount of light and darkness

Controls

•Photocell

•Shade/Black Cloth

• Light Bulbs

•Timer

MoistureControlling

•Watering & Humidity

Controls

•Centralized Control System

•Drip irrigation

•Humidistat/Humidifier

•Misters/Sprinklers

8.01-Maintenance Items

•TemperatureoHeaters-adequate clean fueloThermostats working properlyoFans, Fan motors, belts, etc-workoCooling pads-adequate water and cleanoShade cloth-attached and is at right percentage

•LightoShade Cloth-attached or removedoLight bulbs-all workoPhotocells & Timers-work correctly

8.01-Maintenance Items

•MoistureoHumidistat & Fogging/Mist Systems-work

properlyoWater lines & faucets-no leaks and adequate

source of high quality and clean water

•SanitationoDiseases, Weeds & Insects-controlled by

prevention methods

General MaintenanceWhat Goes Where?

Structural Controls & Equipment Utilities