Lampiran
3.Kriteria penilaian sifat kimia tanah
|
No |
Sifat
Tanah |
Sangat
Rendah |
Rendah |
Sedang |
Tinggi |
Sangat Tinggi |
|
1. |
pH |
<4,5 Sangat masam |
4,5-5,5
Masam |
5,5-6,5
Agak Masam |
6,6-7,5
Netral |
7,6-8,5 Agak Alkalis |
|
2. |
N-Total(%) |
<0,1 |
0,2 |
0,5 |
0,75 |
>0,75 |
|
3. |
P2O5.HCl25%(ppm) |
<10 |
20 |
40 |
60 |
>60 |
|
|
P-Bray- II |
<4,4 |
4,4-6,6 |
7,0-11,0 |
11,4-15,3 |
>15,3 |
|
4. |
K2O.HCl25%(ppm) |
<10 |
10-20 |
21-40 |
41-60 |
>60 |
|
5. |
K-dd (Cmol.Kg-1) |
<0,1 |
0,1-0,2 |
0,3-0,5 |
0,6-1,0 |
>1,0 |
|
6. |
Na (Cmol.Kg-1) |
<0,1 |
0,1-0,3 |
0,4-0,7 |
0,8-1,0 |
>1,0 |
|
7. |
Ca (Cmol.Kg-1) |
<2 |
5 |
10 |
20 |
>20 |
|
8. |
Mg (Cmol.Kg-1) |
<0,4 |
1,0 |
2,0 |
8,0 |
>8,0 |
|
9. |
Fe (Cmol.Kg-1) |
<25 |
25-50 |
50-250 |
250-1000 |
>1000 |
|
10. |
C-Organik (%) |
<1,00 |
1,00-2,00 |
2,01-3,00 |
3,01-5,00 |
>5,00 |
|
11. |
KTK (Cmol.Kg-1) |
<5 |
5-16 |
17-24 |
25-40 |
>40 |
|
12. |
KB (%) |
<20 |
20-35 |
36-50 |
51-70 |
>70 |
|
13. |
DHL (mScm1) |
--- |
<8 |
8-15 |
>15 |
--- |
|
14. |
Al-dd(Cmol.Kg-1) |
<10 |
10-20 |
21-30 |
31-60 |
>60 |
Sumber:
Gatot dan Yulizon, 2005.
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