Iha 2011 May Webinar - Fafard
10 Questions
| Attempts: 162
This quiz was created to review the May 18, 2011 webinar presented by Fafard.
Questions and Answers
- 1.What mix component would have the highest contribution to soil water holding ability?
- A.
Peat moss
- B.
Coir
- C.
Coarse bark
- D.
Perlite
- 2.Which mix component will wet up the slowest?
- A.
Fine pine bark
- B.
Coir
- C.
Styrofoam
- D.
Vermiculite
- 3.A dry grower would prefer 4P over 3B.
- A.
True
- B.
False
- 4.Of the popular Fafard soils from GM 1PV to Fafard 52, Fafard 52 has the highest total porosity because of its coarse bark component.
- A.
True
- B.
False
- 5.Air space goes up and container capacity goes down in a bark-based mix compared to a peat-based mix.
- A.
True
- B.
False
- 6.When interpreting a sieve analysis large percentages of aggregate in the ___ pan(s) would indicate a high water holding medium.
- A.
20
- B.
30
- C.
50
- D.
All of the above
- 7.Polymers tend to…..……. the impact of fertilizer salts in the media
- A.
Increase
- B.
Decrease
- C.
Have no effect
- D.
All of the above
- 8.In order for polymers to work there has to be water present in the growing system.
- A.
True
- B.
False
- 9.Calcined clay incorporation typically lowers the media pH.
- A.
True
- B.
False
- 10.Calcined clay can
- A.
Increase bulk density
- B.
Serve as a pH buffer
- C.
Improve nutrient retention
- D.
All of the above
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