Iha Education February Webinar - Plant Growth Regulators

10 Questions | By Jofa7999 | Updated: May 31, 2023 | Attempts: 56

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Iha Education February Webinar - Plant Growth Regulators - Quiz

This quiz was created by the IHA as a review for a webinar presented in February 2009 regarding Plant Growth Regulators.

Questions and Answers

1.

Applying PGR’s early in the production of a crop generally provides more growthregulation than one applied closer to mature size.
- A.
  
  True
- B.
  
  False
2.

When comparing soil drenches of Bonzi/Paczol to foliar sprays, drenches typically:
- A.
  
  Spread less disease
- B.
  
  Improve flower color
- C.
  
  Provide longer height control
- D.
  
  Cause less bloom delay
- E.
  
  C and D
3.

Fascination reduces stem elongation and lower leaf yellowing of Easter lilies when used as directed.
- A.
  
  True
- B.
  
  False
4.

Which two PGR’s are recommended to reduce the height of Easter lilies?
- A.
  
  A-Rest, Fascination
- B.
  
  B-Nine, Cycocel
- C.
  
  A-rest, Sumagic
- D.
  
  Florel, Fascination
5.

Which one of these has no influence on internode elongation (stretching):
- A.
  
  Watering practices
- B.
  
  Available light
- C.
  
  Temperature
- D.
  
  Source of nitrogen
- E.
  
  Phosphorus
6.

Florel produces which of the following responses in most plants?
- A.
  
  Promotes lateral branching
- B.
  
  Reduces internode elongation
- C.
  
  Delays blooming
- D.
  
  Exaggerates plant stress
- E.
  
  All of the above
7.

Most PGR’s are applied at a rate of 1 gallon per 200 square feet. Which one is applied just to the point of glisten?
- A.
  
  A-Rest
- B.
  
  B-Nine, Compress
- C.
  
  Bonzi, Paczol
- D.
  
  Cycocel
- E.
  
  Florel
8.

The Wave petunia program suggested in the webinar consists of a foliar spray of Florel followed by a Bonzi/Paczol drench. Which of the following is not a result of this program?
- A.
  
  More compact growth
- B.
  
  Earlier flowering
- C.
  
  Reduced disease spread
- D.
  
  Less labor
9.

Pine bark in soil mixes can reduce the effectiveness of PGR drenches.
- A.
  
  True
- B.
  
  False
10.

To reduce the potential for plants to stretch:
- A.
  
  Increase the average daily temperature.
- B.
  
  Decrease the average daily temperature.
- C.
  
  Reduce the day temperature while leaving the night temperature the same.
- D.
  
  Play loud Disco music in the greenhouse night and day.