1. “Greenhouse Components” Lecture Series
Feb 15
“Greenhouse Components” Lecture Series
Greenhouse Management & Floriculture
Agriculture Technology Department
Plymouth High School

2. Identify the bulb flowering on the instructor’s bench.

3. TARGETS
To recognize and explain three kinds of equipment that can ventilate a greenhouse
To recognize and explain two kinds of equipment that can heat a greenhouse
To distinguish between the four types of greenhouse covering materials (glass, polycarbonate, polyvinyl chloride and polyethylene

4. Structural Components
IMAGE FROM : MyCaert Lesson

5. Greenhouse Orientation
GH Orientation
Greenhouse Orientation
Single
Above 40oN (ridge E-W)
Below 40oN (ridge N-S)
% Transmission
Gutter Connect/Ridge and Furrow
(All ridges N-S)
*N-S is best for snow removal
Wisconsin is between 44O and 45O Latitude
Midwinter
Summer
North-South (N-S)
48%
64%
East-West (E-W)
71%
66%

6. Frame Materials treated or untreated Wood Iron—Steel—Aluminum
Galvanization
From Wikipedia, the free encyclopedia
Hot-dip galvanizing is a form of galvanization. It is the process of coating iron, steel, or aluminum with a thin zinc layer, by passing the metal through a molten bath of zinc at a temperature of around 860 °F (460 °C). When exposed to the atmosphere, the pure zinc (Zn) reacts with oxygen (O2) to form zinc oxide (ZnO), which further reacts with carbon dioxide (CO2) to form zinc carbonate (ZnCO3), a usually dull grey, fairly strong material that stops further corrosion in many circumstances, protecting the steel below from the elements.
Galvanized steel is widely used in applications where rust resistance is needed, and can be identified by the crystallization patterning on the surface (often called a “spangle”).
Zn coating
reacts with O2 = ZnO
ZnO reacts with CO2 to make ZnCO3 (zinc carbonate)

7. What else is in a GH?
Groups of 2 ONLY! You have 3 minutes to list as many components as you can!

8. What else is in a Greenhouse?
Heating Systems
Cooling Systems
Irrigation Systems
Bench Systems
CO2 emitters
Shade Clothes

9. Do your Easter Lilies need water today?

10. Covering (Glazing) Glass Acrylic Polycorbonates
Vinyl (polyvinyl cholride
Polyethylene (#1 used)

11. Wednesday
Early Release
END OF TODAY