E024 Fertilization Strategy
The experiment uses 3 different nitrogen addition levels and 4 other nutrient
additions trying to create different pH levels. Each nitrogen-pH combination
is assigned a capital letter.
| Treatment
Code |
pH Level
|
Nitrogen
Level
|
A
|
1
|
0.0 g/m2
|
B
|
1
|
8.0 g/m2
|
C
|
1
|
25.0 g/m2
|
D
|
2
|
0.0 g/m2
|
E
|
2
|
8.0 g/m2
|
F
|
2
|
25.0 g/m2
|
G
|
3
|
0.0 g/m2
|
H
|
3
|
8.0 g/m2
|
I
|
3
|
25.0 g/m2
|
J
|
4
|
0.0 g/m2
|
K
|
4
|
8.0 g/m2
|
L
|
4
|
25.0 g/m2
|
The nitrogen additions used the "microplot" strategy found in nutradd.doc
at the levels noted.
pH Level 1 received 62.5 g/m2 S + 250 g/m2 FeSO4.
pH Level 2 received no nutrients to adjust the pH level.
pH Level 3 received 62.5 g/m2 of Ca(OH)2 in 1984
and 125 g/m2 in 1985.
pH Level 4 received 125 g/m2 of Ca(OH)2 in 1984 and
250 g/m2 in 1985.
The plots are 16 m2 in area.
Irregularities occurred in N level additions in 1985, two plots in the
first fertilization received 25.0 g/m2 when those plots had been
assigned to 0.0g/m2.
dman@lter.umn.edu