Iha Education May Webinar - Fafard Media Additives & Alternatives Update Part 1

10 Questions | By Jofa7999 | Last updated: Mar 18, 2022 | Total Attempts: 75

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This quiz is to review the May 14th webinar presented by Fafard

Questions and Answers

1.

Air space goes up and container capacity goes down in a bark-based mix compared to a peat based mix.
- A.
  
  True
- B.
  
  False
2.

The volume of water retained after drainage from saturation, but before evaporation is termed?
- A.
  
  Total porosity
- B.
  
  Container capacity
- C.
  
  Air space
- D.
  
  Bulk density
3.

Biological activity to suppress root rot pathogens like Pythium is highest in?
- A.
  
  Top of bog
- B.
  
  Middle of bog
- C.
  
  Bottom of bog
- D.
  
  All levels of bog
4.

Western peat typically has a lower pH than New Brunswick peat.
- A.
  
  True
- B.
  
  False
5.

A mix with 30% rice hulls would be best for?
- A.
  
  Seed propagation
- B.
  
  General bedding plant production
- C.
  
  Perennials
- D.
  
  None of the above
6.

What nutrient has been found to be in higher concentrations when comparing perlite-based mixes versus rice hull-based mixes?
- A.
  
  Boron
- B.
  
  Copper
- C.
  
  Aluminum
- D.
  
  Silicon
7.

Irrigation management is not an issue with rice hull-based mixes.
- A.
  
  True
- B.
  
  False
8.

Nitrogen "tie-up" does not appear to be an issue with rice hull mixes below 30%.
- A.
  
  True
- B.
  
  False
9.

Fafard's facilities screen southern pine bark to fine and coarse sizes. What are the bark screen sizes in inches for fine and coarse?
- A.
  
  5/8", 3/8"
- B.
  
  3/8", 5/8"
- C.
  
  1/2", 5/8"
- D.
  
  5/8", 1/2"
10.

Slime mold (brown or yellow growth on media surface) is associated with:
- A.
  
  Greenhouse humidity
- B.
  
  Bark based mixes
- C.
  
  Warm temperatures
- D.
  
  All of the above

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