Geoscience Reference
In-Depth Information
three blocks. Treatments were evaluated on the basis of average annual height growth in inches per
year over a 3-year period. Field layout and plot data were as follows (with subscripts denoting nitro-
gen levels: 0 = 0, 1 = 100, 2 = 200):
C
2
17
B
2
18
C
0
37
B
2
23
C
2
20
A
1
18
C
1
19
C
2
21
A
0
37
A
0
45
B
0
24
C
1
20
B
1
18
A
2
14
C
0
43
B
1
19
A
2
17
A
1
28
B
1
21
A
2
24
A
1
17
A
0
40
C
1
25
B
0
35
B
0
29
C
0
39
B
2
15
I
II
III
Preliminary analysis of the nine combinations (temporarily ignoring their factorial nature) is made just
as though this were a straight randomized block design (which is exactly what it is). (See table below.)
Summary of Plot Data
Blocks
Nitrogen
Level
Nitrogen
Subtotals
Species
Totals
Species
I
II
III
A
0
45
40
37
122
1
17
18
28
63
2
24
14
17
55
Block subtotals
86
72
82
240
B
0
24
35
29
88
1
21
18
19
58
2
18
23
15
56
Block subtotals
63
76
63
202
C
0
37
43
39
119
1
20
25
19
64
2
17
20
21
58
Block subtotals
74
88
79
241
All species
0
106
118
105
329
1
58
61
66
185
2
59
57
53
169
Totals
223
236
224
683
2
27
X
2
683
27
CT
=
=
=
17 277 3704
,
.
27
26
∑
2
2
2
2
Total
SS
=
XCT
− =+++ −=
(
45
17
…
21
)
CT
22
75 63
.
26
df
3
(
)
−=
∑
(
2
2
2
2
Blocktotals
No.ofplots p
)
er block
−=
+
223
236
+
224
Block
S
df
=
CT
CT
11 6296
.
9
2
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