Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

LHAP 3rd > Growing Facilities > Flashcards

Growing Facilities Flashcards

1
Q

rule of thumb that greenhouses be kept how many metres away from unavoidable structures?

A

2.5m

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

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

A

cold frame

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

a second application of film plastic between layers will?

A

decrease the rate of heat loss

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

what watering system is the most efficient for water indoor/outdoor crops

A

drip irrigation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

most important control measure to take when recycling drain water?

A

filter and disinfect

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

most important reason to overwinter container stock in an insulated environment?

A

insulate roots and keep moisture in

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

which gable end structure allows for the best support for overhead equipment?

A

post truss

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

prevailing wind direction and velocity affect what in greenhouse planning?

A

ventilation, heating and loads

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

shade/lath houses can be used to modify which environmental components?

A

temp modification, reduce transportation loss and reduce light intensity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

simplest way to store plants thru winter?

A

heeling in

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

why is it important to recycle water in a greenhouse?

A

efficient use of water, recycle nutrients, reduce impact on the environment

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

most common way to purify and disinfect water in a greenhouse

A

reverse osmosis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

best bench arrangement that gives greatest amount of floor space with a fixed bench

A

peninsula

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

what will tree producers use to harden off trees that have been dug or transplanted during the growing season?

A

poly houses

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

most vital utility for successful greenhouse production?

A

water quality

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

what is important before placing plants in a microfilm tunnel?

A

plants are dormant and well watered

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

which glazing lasts the longest

A

tempered glass

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

total volume of greenhouse to unoccupied for adequate air circulation?

A

1/3

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

what’s is a live load?

A

wind, snow or crops

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

minimum distance a greenhouse should be from a shelter belt is?

A

30m

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

the method used to control the soil environment in the field?

A

organic mulch

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Y/N are water collection pits essential to prevent groundwater contamination?

A

yes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

dead load calculations would include?

A

steel framing members

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

to avoid excessive snow loads and provide safe distance if a tree fails, buildings should be placed?

A

2 times the height of tree or 20m

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

what glazing material is the most economical in cost and install?

A

co polymer

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

What is the term for shadows cast by structural components that result in crop exposure that is not uniform

A

static shadow

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

stratification is especially a problem with which style of greenhouse?

A

gothic arch

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

Y/N benches are cooler than the floor below them?

A

no

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
29
Q

gutter connected greenhouses should be oriented what direction for maximum light transmission?

A

north and south

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
30
Q

aluminium alloys main advantage over galvanized steel is?

A

light weight

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
31
Q

concerns when growing in field soils?

A

weed problems

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
32
Q

poly houses are primarily used for which species?

A

evergreens

33
Q

crazing from hail impact is a common problem for which material?

A

fibreglass

34
Q

when assessing a property what’s the main objective?

A

maximize environmental conditions

35
Q

what tool can be used to monitor climate in an overwintering storage facility?

A

thermostat

36
Q

glazing that allows primarily direct light transmission?

A

glass

37
Q

Y/N aisle width in a greenhouse can vary from 45-120cm

A

yes

38
Q

most important water source in the prairies?

A

dugouts

39
Q

plants that are laid on their sides and piled to pre determined height would be placed in which storage structure?

A

microfoam tunnels

40
Q

the distance from ridge to either sidewall of a greenhouse is equal in length, the greenhouse is?

A

evenspan

41
Q

fertilization method commonly used in greenhouses?

A

fertigation

42
Q

best time to till a filed?

A

in the fall

43
Q

under row cover, warm season crops will what?

A

mature 1 - 2 weeks earlier

44
Q

which organic mulch has the most advantages?

A

wood chips

45
Q

when is the most effective time to control perennial weeds?

A

springtime

46
Q

when are summer annual weeds best controlled?

A

in the fall

47
Q

3 important practises used in IPM to maintain effective control of disease and insects?

A

education, monitoring and identification

48
Q

a reason for post planting tilling?

A

to expose perennial roots and crowns to winter desiccation

49
Q

how often should field soil be tested?

A

every 3 - 5 years

50
Q

which nutrient is usually limited and leached easily from the soil?

A

nitrogen

51
Q

when is the best time to work phosphorus into the soil?

A

prior to planting

52
Q

slow release plus a liquid fertilizer should be used at what rate?

A

half the rate

53
Q

the tiling depth for adding organic matter is?

A

10 - 12 inches

54
Q

all fertilizers in Canada are sold as a what? it guarantees the minimum % of NPK

A

sold as a grade

55
Q

water soluble fertilizers are used with?

A

fertilizer injector systems

56
Q

what are the specific requirements for the breakdown of organic fertilizers in soil?

A

warm and moist soils

57
Q

which micronutrient ism deficient on the prairies?

A

iron

58
Q

how far away from the base of plants should side dressing be done to work the nutrients into the soil?

A

15 - 25cm

59
Q

what’s a disadvantage of blended fertilizer?

A

limited to the nutrient ratios provided

60
Q

a field soil deficiency of nitrogen would require what?

A

20 - 25lbs of nitrogen per acre

61
Q

what percentage of bleach should be used to sterilize pots and containers?

A

10%

62
Q

a broad spectrum disinfectant used in greenhouses?

A

vikron

63
Q

how long to allow surfaces in greenhouse to dry after disinfecting them with 10% bleach?

A

24 hours

64
Q

which environmental control system is least likely be automated?

A

watering systems

65
Q

what product is used to disinfect and preserve wood benches n greenhouses?

A

copper naphthenate

66
Q

indicators of carbon monoxide production in a greenhouse that can be seen in a CO2 burner is?

A

orange flame

67
Q

what stage of growth is bottom heat as a temp control most valuable?

A

seedlings stage

68
Q

carbon monoxide levels are toxic at what ppm to plants and humans?

A

500 - 50ppm

69
Q

at standard crop height, where should a carbon monoxide sensor be placed?

A

at the canopy level

70
Q

suspended particles and hard water present a problem primarily in?

A

drip irrigation

71
Q
A
72
Q

3 main components of an environmental control system are?

A

sensor, controller and process equipment

73
Q

a fan system that includes an intake on one end to draw air in and shutters opening on the other end to create positive air flow is?

A

endwell exhaust

74
Q

HAF stands for?

A

horizontal action fan

75
Q

a system that is capable of reducing air temps inside the greenhouse below ambient outside temps is?

A

cooling

76
Q

thermostat sensors for heaters should be placed at?

A

crop level

77
Q

Y/N greenhouse applications for forced air systems are localized?

A

yes

78
Q

T/F sensors should be shaded from direct sun, set in a vented sensor box and painted white to reflect heat and may have a small fan to draw greenhouse air over them?

A

true

LHAP 3rd (8 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions