Growing Facilities

Question 1

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

Answer 1

2.5m

Question 2

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

Answer 2

cold frame

Question 3

a second application of film plastic between layers will?

Answer 3

decrease the rate of heat loss

Question 4

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

Answer 4

drip irrigation

Question 5

most important control measure to take when recycling drain water?

Answer 5

filter and disinfect

Question 6

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

Answer 6

insulate roots and keep moisture in

Question 7

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

Answer 7

post truss

Question 8

prevailing wind direction and velocity affect what in greenhouse planning?

Answer 8

ventilation, heating and loads

Question 9

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

Answer 9

temp modification, reduce transportation loss and reduce light intensity

Question 10

simplest way to store plants thru winter?

Answer 10

heeling in

Question 11

why is it important to recycle water in a greenhouse?

Answer 11

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

Question 12

most common way to purify and disinfect water in a greenhouse

Answer 12

reverse osmosis

Question 13

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

Answer 13

peninsula

Question 14

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

Answer 14

poly houses

Question 15

most vital utility for successful greenhouse production?

Answer 15

water quality

Question 16

what is important before placing plants in a microfilm tunnel?

Answer 16

plants are dormant and well watered

Question 17

which glazing lasts the longest

Answer 17

tempered glass

Question 18

total volume of greenhouse to unoccupied for adequate air circulation?

Answer 18

1/3

Question 19

what’s is a live load?

Answer 19

wind, snow or crops

Question 20

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

Answer 20

30m

Question 21

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

Answer 21

organic mulch

Question 22

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

Answer 22

yes

Question 23

dead load calculations would include?

Answer 23

steel framing members

Question 24

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

Answer 24

2 times the height of tree or 20m

Question 25

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

Answer 25

co polymer

Question 26

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

Answer 26

static shadow

Question 27

stratification is especially a problem with which style of greenhouse?

Answer 27

gothic arch

Question 28

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

Answer 28

no

Question 29

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

Answer 29

north and south

Question 30

aluminium alloys main advantage over galvanized steel is?

Answer 30

light weight

Question 31

concerns when growing in field soils?

Answer 31

weed problems

Question 32

poly houses are primarily used for which species?

Answer 32

evergreens

Question 33

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

Answer 33

fibreglass

Question 34

when assessing a property what's the main objective?

Answer 34

maximize environmental conditions

Question 35

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

Answer 35

thermostat

Question 36

glazing that allows primarily direct light transmission?

Answer 36

glass

Question 37

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

Answer 37

yes

Question 38

most important water source in the prairies?

Answer 38

dugouts

Question 39

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

Answer 39

microfoam tunnels

Question 40

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

Answer 40

evenspan

Question 41

fertilization method commonly used in greenhouses?

Answer 41

fertigation

Question 42

best time to till a filed?

Answer 42

in the fall

Question 43

under row cover, warm season crops will what?

Answer 43

mature 1 - 2 weeks earlier

Question 44

which organic mulch has the most advantages?

Answer 44

wood chips

Question 45

when is the most effective time to control perennial weeds?

Answer 45

springtime

Question 46

when are summer annual weeds best controlled?

Answer 46

in the fall

Question 47

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

Answer 47

education, monitoring and identification

Question 48

a reason for post planting tilling?

Answer 48

to expose perennial roots and crowns to winter desiccation

Question 49

how often should field soil be tested?

Answer 49

every 3 - 5 years

Question 50

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

Answer 50

nitrogen

Question 51

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

Answer 51

prior to planting

Question 52

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

Answer 52

half the rate

Question 53

the tiling depth for adding organic matter is?

Answer 53

10 - 12 inches

Question 54

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

Answer 54

sold as a grade

Question 55

water soluble fertilizers are used with?

Answer 55

fertilizer injector systems

Question 56

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

Answer 56

warm and moist soils

Question 57

which micronutrient ism deficient on the prairies?

Answer 57

iron

Question 58

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

Answer 58

15 - 25cm

Question 59

what's a disadvantage of blended fertilizer?

Answer 59

limited to the nutrient ratios provided

Question 60

a field soil deficiency of nitrogen would require what?

Answer 60

20 - 25lbs of nitrogen per acre

Question 61

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

Answer 61

10%

Question 62

a broad spectrum disinfectant used in greenhouses?

Answer 62

vikron

Question 63

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

Answer 63

24 hours

Question 64

which environmental control system is least likely be automated?

Answer 64

watering systems

Question 65

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

Answer 65

copper naphthenate

Question 66

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

Answer 66

orange flame

Question 67

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

Answer 67

seedlings stage

Question 68

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

Answer 68

500 - 50ppm

Question 69

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

Answer 69

at the canopy level

Question 70

suspended particles and hard water present a problem primarily in?

Answer 70

drip irrigation

Question 72

3 main components of an environmental control system are?

Answer 72

sensor, controller and process equipment

Question 73

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?

Answer 73

endwell exhaust

Question 74

HAF stands for?

Answer 74

horizontal action fan

Question 75

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

Answer 75

cooling

Question 76

thermostat sensors for heaters should be placed at?

Answer 76

crop level

Question 77

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

Answer 77

yes

Question 78

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?

Answer 78

true