Name:________________
1. What
kind of experimental designs does your project presently employ when conducting
field experiments? ( RCBD 7,
CRD 3, Other
__1_____)
RCBD (Randomized Complete Block Design)
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1 |
4 |
5 |
3 |
2 |
Rep 1 |
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3 |
1 |
4 |
2 |
5 |
Rep 2 |
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2 |
5 |
1 |
3 |
4 |
Rep 3 |
|
CRD (Completely Randomized Design)
|
2 |
1 |
3 |
3 |
1 |
|
4 |
3 |
2 |
4 |
5 |
|
1 |
4 |
5 |
2 |
5 |
2. How many
environments (years and/or locations), for a specific experiment, does your
project usually collect before
submitting the results for publication.
(2, 4, 6, 8, 10, >10)
(3, 2, 2, 2, 2)
(e.g, an experiment conducted at 5 locations over 2 years would be 10
environments)
3. Before
putting out your field experiments do you soil sample each experimental unit
(e.g., all 15 plots (3 reps, 5 treatments))?
(yes 6
no 6 )
There are more people who imply a 'gradient' (RCBD)
than are soil sampling prior to imposing experimental design. Some people
must be 'assuming' a gradient exists.
4. Have you
ever used a covariate in analysis of variance?
( yes
3
no 9 )
5. If you
put out four of the above experiments (5 treatments, 3 reps) at different
locations, and you found from the combined analysis that the
treatment*environment interaction was significant, what would you do?
(or how would you partition this effect?)
a. Don't know 5
b.
Discuss
Environments (locations) independently 7
do not combine experiments