Term
| What are 4 common glazing options? |
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Definition
| Glass, rigid plastic (Acrylic and Polycarbonate), Polyethylene, and Fiberglass |
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Term
| What are the 2 types of glazing thicknesses? |
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Definition
| Single wall and double wall |
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Term
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Definition
| Photosynthetically Active Radiation |
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Term
| What cladding material has the highest PAR? |
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Definition
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Term
| What cladding material has the lowest PAR? |
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Definition
| Single-layer polyethylene film |
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Term
| What are 2 types of rigid plastics? |
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Definition
| Acrylic and polycarbonate |
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Term
| What percentage does double polyethylene reduce heat loss at night? |
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Definition
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Term
| What type of polyethylene is not greenhouse grade, lasts 1 year, and is available in 3, 4, and 6 mil thickness? |
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Definition
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Term
| What type of polyethylene is 6 mil thickness and can be used for multi-year applications? |
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Definition
| Greenhouse-grade polyethylene |
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Term
| What type of heat do infrared films keep in? |
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Definition
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Term
| What layer is the infrared film placed? |
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Definition
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Term
| What is another name for anti-condensation films? |
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Definition
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Term
| How does anti-condensation film work? |
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Definition
| Prevents water droplets from forming, they run off instead |
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Term
| What type of heat transfer do plants change temp when touching the heating unit? |
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Definition
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Term
| What type of heat transfer is when hot/cold air passes by and changes the temperature of the object? |
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Definition
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Term
| What type of heat transfer is sunlight, infrared waves, and heats objects? |
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Definition
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Term
| What does a therm measure? |
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Definition
| How much energy it takes for 1lb of water to raise 1F |
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Term
| What is fuel price based on? |
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Definition
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Term
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Definition
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Term
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Definition
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Term
| What type of fuel is 'cheap', but has hidden costs, handling issues, and waste issues? |
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Definition
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Term
| What fuel type has no disposal issues, on sight storage, and is often used as a backup source? |
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Definition
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Term
| What type of glazing is generally 2-8mm and is normally double-layered and air-inflated? |
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Definition
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Term
| What type of glazing is flexible plastics such as fiberglass-reinforced plastic, acrylic and polycarbonate panels? |
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Definition
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Term
| What type of glazing is rigid materials like glass? |
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Definition
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Term
| What's a clear, impact resistant, thermoplastic polyester of carbonic acid produced from dehydrated polyhedral penols? |
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Definition
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Term
| What type of glazing can be high/low pressure or high/low density? |
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Definition
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Term
| What is a clear and weatherable thermoplastic? |
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Definition
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Term
| What's the measurement of time rate of heat flow per unit area under steady conditions? |
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Definition
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Term
| What is measured in BTU/hr./sq. ft. per temperature difference? |
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Definition
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Term
| What's the difference between infrared and ultraviolet light? |
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Definition
| Infrared can't be seen by humans and emits heat and ultraviolet is invisible radiation that initiates some chemical reactions |
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Term
| What type of thermostat is most often used in greenhouses? |
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Definition
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Term
| What type of temperature control is crop specific? |
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Definition
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Term
| What fuel type has no disposal issues, need connection to municipality, but has no self storage? |
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Definition
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Term
| What fuel type has no disposal issues, can self store, and are usually for smaller growers due to volume needed? |
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Definition
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Term
| What fuel type is labor intensive, has disposal issues, and can vary in proportion and cleanliness? |
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Definition
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Term
| What type of heater is large scale, heat is created in one location and funneled to houses, has a high cost of initial installation, and is less maintenance on a large scale? |
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Definition
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Term
| What type of heater can be used for large or small scale, heat is created in house, low cost of initial installation, needs ventilation, and is more maintenance on a large scale? |
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Definition
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Term
| What are 4 methods of heat delivery? |
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Definition
| Steam, water, air, and infrared |
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Term
| What type of heating system is a centralized system, is gravity flow vs motorized, is closed loop, and has increasing popularity over steam? |
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Definition
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Term
| What type of heater is a centralized system, used to be most popular on a large scale, is pressurized, and is a closed loop? |
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Definition
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Term
| What is a type of unit heater, has a similar concept to home forced air furnace, and is only used in localized settings? |
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Definition
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Term
| What type of heater is localized, radiant heating, heats crops but not air, and is not commonly used? |
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Definition
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Term
| What 3 places will plain piping be placed for heating? |
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Definition
| Floor, beneath branches, and gutters |
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Term
| Where would you find finned piping for heating? |
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Definition
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Term
| Where would you find perforated poly tubing used in fan assisted distribution? |
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Definition
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Term
| What is another name for a swamp cooler? |
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Definition
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Term
| What type of cooling does water take more energy to change temperature than air and has a humidity factor? |
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Definition
| Evaporative cooling (swamp cooler) |
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Term
| Why should you unbox plants immediately? |
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Definition
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Term
| Why should you water trays of plants when you get them? |
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Definition
| Edges dry out quickly and it needs even watering |
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Term
| Why would you use a calloused cutting over an unrooted cutting? |
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Definition
| Callus tissues can help a plant generate new roots, stems, and leaves in addition to protecting the wounded areas |
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Term
| What type of modified stem is the resting stage of certain seed plants, particularly perennial monocotyledons. It consists of a relatively large, usually globe-shaped, underground bud with membraneous or fleshy overlapping leaves arising from a short stem? |
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Definition
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Term
| What type of modified stem is an upright, swollen, and is a underground stem base of an herbaceous plant? |
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Definition
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Term
| What is a specialized storage stem of certain seed plants and they are usually short and thickened and typically grow beneath the soil? |
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Definition
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Term
| What is a tree or shrub prepared for transplanting by having all or most of the soil removed from their roots? |
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Definition
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Term
| Dormant, potted-up, and triggered to flower are what type of product? |
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Definition
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Term
| What type of product are fruits, vegetables, and herbs, and foliage plants? |
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Definition
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Term
| T/F: Foliage plants are intended for transplanting outdoors. |
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Definition
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Term
| What type of plants have the largest market share? |
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Definition
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Term
| What type of plants have the lowest market share? |
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Definition
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Term
| What are the 5 top concerns of greenhouse businesses? |
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Definition
| Economy (59%), Production costs (57%), Labor costs (37%), Availability of skilled labor (29%), and Transportation (14%) |
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