PH
N
P
K
Red clay
Acid-5.5
Depleted
Depleted
Depleted
Black muck
Slightly acid-6.5
Depleted
Depleted
Adequate
White coral
Neutral-7.0
Depleted
Deficient
Deficient
Fertilized water
Acid-5.5
Depleted
Not tested
Depleted
Harry Saul