|
Calibration of Mehlich-1 Extractable P for Cotton by State Soil Testing Laboratories in the Southeastern United States |
|
|
State
|
Soil
test rating for P
|
| Low |
Medium |
High (critical value) |
|
Extractable P (mg/kg) |
| Alabama CEC<9 CEC=9+ |
<12.5 <7.5 |
12.5-25 7.6-15 |
25+ 15+ |
| Florida
All soils |
<7.5 |
7.6-30 |
30+ |
| Georgia Coastal Plain Piedmont |
<15 <10 |
15-30 10-20 |
30+ 20+ |
| South Carolina
Coastal Plain Piedmont |
<15 <10 |
15-30 10-20 |
30+ 20+ |
| Tennessee
All soils |
<18 |
19-30 |
30+ |
| Virginia All soils |
<6 |
6-18 |
18+ |