Across
- 2. one of several considerations of site selection because all greenhouse plants are affected by contaminants such as sulfur dioxide, ozone and carbon monoxide, air quality must be considered
- 4. one consideration of greenhouse site selection; an area’s climatic factors include light intensity, seasonal temperatures, prevailing fog or cloud conditions and wind patterns
- 6. piece of equipment used in a greenhouse to distribute air; polyethylene tubes are used in both heating and cooling systems
- 7. plants which flower according to certain day lengths
- 9. greenhouse whose structural components include more than one type of framing material; consists of steel trusses and wooden roof bars
- 14. greenhouse shape with a peaked roof; also know as a “peaked-style” greenhouse
- 15. materials such as wood and aluminum used for the structural components of a greenhouse Irrigation
- 17. relative number of hours of daylight and darkness to which greenhouse plants are exposed; length of the dark period which is the controlling factor for photoperiodic plants
- 18. gutter connected greenhouse with shared inner walls; such construction creates separate growing areas with potentially different environments
- 19. best growing temperature for a greenhouse crop during a specific stage of development; crops may have several stages of development and hence several optimum temperatures may be needed
- 20. greenhouse equipment designed to provide water to plants Light Intensity magnitude of radiant energy entering the greenhouse; can be measured in foot candles using an electronic light meter
Down
- 1. one type of rigid plastic used for greenhouse glazing; provides uniform light intensity and average heat retention, but discolors over time and may be flammable
- 3. interior components of a greenhouse structure commonly used to support propagation flats and potted greenhouse plants
- 5. irrigation system which uses nozzles placed around the edges of growing beds to provide water to bed-grown plants
- 8. metal commonly used as a greenhouse framing material for structural components such as roof bars, purlins and posts
- 10. structural component of a greenhouse which connects the sidewall and the roof of the structure
- 11. greenhouse cooling system; re-circulating water wets a pad at one end of the greenhouse and a fan at the other end pulls outside air through the wet pad, cools it and distributes it through the greenhouse at the same time, the fan is exhausting warm air from the greenhouse, thus cooling the greenhouse air
- 12. includes several types of greenhouse glazing materials; most common being polyethylene
- 13. most basic way of cooling a greenhouse environment; by opening the ridge and side vents, warm air is allowed to escape and cool air is drawn inside allowing the cool air to keep the temperature down
- 16. environmental factor manipulated in propagation areas of greenhouse production; decreases water loss from plant leaves while roots are forming