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LHAP Year 2-3 > Growing Facilities > Flashcards

Growing Facilities Flashcards

1
Q

A rule of thumb is that greenhouses should be kept ? meters away from unavoidable obstruction

A

2.5m

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2
Q

What structure can be used for propagating plant material and overwintering plants

A

Cold frame

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3
Q

A second application of film plastic between layers will?

A

Decrease the rate of heat loss

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4
Q

What watering system is most efficient for irrigating crops indoors and outdoors

A

Drip irrigation

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5
Q

What is the most important control measure to take when recycling drain water

A

Filter and disinfect

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6
Q

What is the most important reason to overwinter container stock in an insulated environment

A

Insulate roots and keep moisture in.

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7
Q

Which gable end structure allows for the best support of overhead equipment and crops

A

Post-truss

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8
Q

Prevailing wind direction and velocity effect what in greenhouse planning

A

Ventilation, heating, loads.

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9
Q

Shade/lath houses can be used to modify which environmental components

A

Temperature modification, reduce transportation loss and reduce light intensity

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10
Q

The simplest way to store plants through the winter is

A

Heeling-in

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11
Q

Why is it important to recycle water in a greenhouse

A

Efficient use of water, recycle nutrients, and reduce impact on environment

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12
Q

What is the most common way to purify and disinfect water in a greenhouse

A

Reverse Osmosis

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13
Q

The bench arrangement that gives the greatest amount of bench space per floor area with fixed benches is

A

Peninsula

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14
Q

Tree producers will use ? To harden off trees that have been dug or transplanted during the growing season

A

Poly-houses

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15
Q

The most vital utility for successful greenhouse production is

A

Water quality

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16
Q

What is important before placing plants in a microfoam tunnels?

A

Plants are dormant and well watered

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17
Q

Which glazing will last the longest?

A

Tempered glass

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18
Q

Adequate air circulation requires ? The total volume of the greenhouse to be unoccupied

A

1/3

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19
Q

What loads are considered live loads

A

Wind, snow, and crop loads

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20
Q

What is the minimum distance a greenhouse should be placed from a shelterbelt

A

30m

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21
Q

What method can be used to control the soil environment in the field

A

Organic mulch

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22
Q

Are water collection pits essential to prevent groundwater contamination

A

Yes

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23
Q

Dead load calculations would include

A

Steel framing members

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24
Q

In order to avoid excessive snow load; to provide a safe distance if trees fall, it’s is recommended to place buildings at ? Times the height of the tallest row away

A

2 times away; 20 meters

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25
What glazing material is most economical in both cost and installation
Co-polymers
26
What is the term for shadows cast by structural components that result in crop exposure that is not uniform
Static shadows
27
Stratification is especially a problem with which style of greenhouse
Gothic arch
28
Benches are cooler than the floor below them
No
29
Aluminum alloys mine advantage over galvanized steel as a structural member is
Lighter weight
30
Gutter connected greenhouses should be oriented what direction for maximum light transmission
North-south
31
What are concerns when growing in field soil
Weed problems, soil texture & structure, and pesticide residue.
32
Poly houses are primarily used for one specific species, which is?
Evergreens
33
Crazing from hail impact is a common problem for
Fiberglass
34
When assessing a property, what is the number one objective
Maximize environmental conditions
35
What tool can be used to monitor climate in an overwintering storage facility
Thermostat
36
The glazing that allows primarily direct transmission is
Glass
37
Aisle width in a greenhouse can vary from 45cm - to 120cm
Yes
38
What is the most important water source on the prairies is
Dugouts
39
Plants that are laid on their sides and piled to predetermined height would be placed under what kind of storage structure
Microfoam tunnel
40
If the distance from ridge to either sidewall of a greenhouse is equal in length, the greenhouse is considered
Evenspan
41
What fertilization method is most commonly used in the greenhouse
Fertigation
42
When is the best time to till a field
Fall
43
Under row covers warm season crops will
Mature 1-2 weeks earlier.
44
Which organic mulch has the most advantages
Wood chips
45
When is tbe most effective time to control perennial weeds in the field
Spring
46
Summer annual weeds are best controlled in
In the fall
47
Three important practices used in IPM to maintain effective control of insects and disease are
Education,  monitoring, identification
48
What is a reason for post-planting tillage
To expose perennial roots and crowns to winter desiccation
49
How often should field soil be tested
3-5 years
50
Is record keeping unimportant in IPM
No. It is very important. You won't know if your IPM an is working without records.
51
Which nutrient is usually most limited and leached easily from the soil
Nitrogen
52
When is the best time to work Phosphorus into the soil
Prior to planting
53
Slow release plus a liquid fertilizer should be used at what rate?
Half the rate
54
The till depth for the addition of OM is
10-12"
55
All fertilizers in Canada are sold as a ? Which guarantees the min % of NPK by weight
Grade
56
Water soluble fertilizers are used with
Fertilizer injector system
57
What are the specific requirements for the breakdown of organic fertilizer in soil
Warm and moist soil
58
Which micronutrient is the most deficient in prairie soils
Iron
59
How far away from the base of plants should sidedressing be done to work the nutrients into the soil
15-25cm
60
Is MagAmp a type of slow release fertilizer
Yes
61
What is a disadvantage of blended fertilizer
Limited to the nutrient ratios provided
62
A field soil deficient in N would require
20-25lbs of N/acre
63
What percentage of bleach should be used to sterilize pots & containers
10%
64
A broad spectrum disinfectant used in greenhouses is
Vikron
65
How long should you allow surfaces in a greenhouse to dry after disinfecting them with 10% bleach
24hrs
66
A product used to disinfect and preserve wood benches in a greenhouse is
Copper Naphthenate
67
Which environmental control system is least likely to be automated?
Watering systems
68
An indicator of Carbon Monoxide production in the greenhouse that can be seen in a CO2 burner is
Orange flame
69
What stage of growth is bottom heat as a temperature control most valuable
Seedlings
70
Carbon monoxide levels are toxic at what ppm to plants and humans
500ppm to plants and 50ppm to humans
71
At standard crop height a carbon dioxide sensor should be located at
Canopy level
72
Suspended particles and hard water present a problem primarily in
Drip irrigation systems
73
The three main components of an environmental control system are
The sensor, controller and process equipment
74
A fan system that includes an intake on one end to draw air in, with shutters opening on the other end to create positive air flow is a
Endwall exhaust
75
A system that is capable of reducing air temperature inside the greenhouse below ambient outside temperature is
Cooling
76
HAF stands for
Horizontal Action Fan
77
Thermostat sensors for heaters should be located at
Crop level
78
Greenhouse applications for forced air systems are localized
Yes
79
Sensors should be shaded from direct sun, set in a vented sensor box, be painted white to reflect heat and may have a small fan to draw air from the greenhouse over them
TRUE

LHAP Year 2-3 (12 decks)

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