PH

N

P

K

Red clay

Acid-5.5

Depleted

Depleted

Depleted

Black muck

Slightly acidic-6.5

Depleted

Depleted

Adequate

White coral

Neutral-7.0

Depleted

Deficient

Deficient

Fertilized water

Acid-5.5

Depleted

Not Tested

Depleted