Table I.
Average nutrient levels of healthy and chlorotic maples. (Rogers City, Ml(September 2, 1971
Chlorotic (6)
Healthy (3)
%
N
1.76
1.90
K
.79
.70
P
.24
.24
Ca
1.88
1.92
Mg
.22
.18
ppm
Na
130
78
Mn
14
30
Fe
32
37
Cu
4
6
B
55
38
Zn
12
13
Al
59
57