Benefit of Greenhouse Production *based on the quiz

Question 1

What plant parts / tissues are considered to be a sink?

Answer 1

Roots, tubers, developing fruits, and meristems, which must import carbohydrate for normal development, are all examples of sink tissues.

Question 2

It important to know what the optimal Daily Light Integral (DLI) is for a crop because…

Answer 2

-it indicates the accumulated light intensity needed to maximize growth

Question 3

The study of the life cycle of plants, including its daily and seasonal rhythms and cues that signal the transition between stages is called…

Answer 3

-crop phenology

Question 4

A roof that is designed with continuous vents that are hinged at the ridge is…

Answer 4

Continuous Roof Vent System

Question 5

A roof that is designed with continuous vents that are hinged at the eave/gutter so that the entire roof opens is characteristic of…

Answer 5

Cabrio Ventilation Design

Question 6

A roof that is designed with smaller vent openings that alternate on either side of the ridge is characteristic of…

Answer 6

Venlo Ventilation Design

Question 7

The process of photosynthesis requires light energy, water and carbohydrates. TRUE OR FALSE

Answer 7

False
The process of photosynthesis allows for plant growth and development.

Question 8

A greenhouse production system will always guarantee that a grower will have an increase in yields over open field production. TRUE OR FALSE.

Answer 8

False
No, there are many aspects that are required to ensure success, not just promised. Also, need to track and monitor progress within the GH to measure what you are able to manage.

Question 9

The study of all the plant biochemical, cellular and molecular processes that control the growth and development of the crop to produce an economic yield is called…

Answer 9

Crop Physiology

Question 10

When the light intensity has reached a saturation point for a crop, it means that even with increasing light intensity, there will not be an increase in photosynthesis. TRUE OF FALSE.

Answer 10

True

Question 11

A roof that is designed with the exterior glazing that is a sliding curtain is …

Answer 11

A retractable roof design

Question 12

According to the pest triangle, what 3 factors will determine the severity of an insect or disease infestation?

Answer 12

-a population of a plant pest that is able to infect the crop
-the relative susceptibility of the host/crop
-the proper environment for infection or infestation to occur

Question 13

A ground to ground greenhouse is one that

Answer 13

has no sidewalls

Question 14

Please select all that apply. The advantages of using a steel & Aluminum structure include…

Answer 14

-increased strength and durability
-has longer lifespan

Question 15

The advantages of using a poly film glazing rather than glass include…

Answer 15

-flexible
-has good impact resistance
-low cost

Question 16

It important to know what the light compensation point for a crop because…

Answer 16

Below this measurement, there will be very little to no growth occurring. It is the lowest light needed.

Question 17

A roof that is designed with very few or no vents in the entire roof is characteristic of…

Answer 17

a closed/semi closed design

Question 18

The rate of respiration is primarily affected by

Question 19

As the concentration of carbon dioxide in the atmosphere increases, the rate of photosynthesis rises, reaches an optimum level and then falls. TRUE OR FALSE.

Answer 19

False.
As the concentration of CO2 increases, the rate of photosynthesis increases to a point of saturation.

Question 20

In plants, a source is considered a type of tissue where there is a net consumption of sugars.
TRUE OR FALSE

Answer 20

False
Tissues where there is a net accumulation of sugars.

Question 21

What is a Sink?

Answer 21

Tissue where there is a net consumption of sugars.