|
Table 1. Physico-chemical properties of an Ultisols where cassava is cultivated in Kerala
|
Depth
(cm)
|
pH
|
OC (%)
|
N
|
P
Kg/ha)
|
K |
Ca
cmol(+)/kg
|
Mg
cmol(+)/kg
|
S
|
Fe
|
Mn
mg kg
|
Zn
|
Cu
|
B
|
Sand
(%)
|
Silt
|
Clay
|
|
0-28 |
5.05 |
1.96 |
182.24 |
29.34 |
103.34 |
0.41 |
0.07 |
6.55 |
34.12 |
10.18 |
1.25 |
1.17 |
0.74 |
64.81 |
5.59 |
29.60 |
|
28-63 |
5.00 |
1.47 |
58.34 |
11.38 |
52.39 |
0.29 |
0.05 |
3.21 |
23.18 |
5.52 |
0.65 |
0.87 |
0.58 |
58.30 |
7.51 |
34.20 |
|
63-87 |
5.20 |
0.52 |
42.14 |
6.59 |
34.11 |
0.21 |
0.03 |
2.34 |
13.45 |
3.21 |
0.32 |
0.52 |
0.39 |
50.72 |
8.54 |
40.75 |
|
97-2700 |
4.95 |
0.33 |
38.89 |
4.32 |
22.87 |
0.17 |
0.02 |
0.96 |
8.91 |
1.08 |
0.27 |
0.19 |
0.12 |
57.04 |
7.47 |
35.50 |
|