Das et al.
Table 2. Effect of pesticides and moisture regimes on changes in the amount (mg kg -1 ) of exchangeable NH 4 + in soil treated
with or without inorganic N
Incubation period (Days)
Treatments
Moisture regimes
N-fertilization
0
15
30
60
-
56.73
49.04
41.13
34.8
60% of MHC
+
143.96
82.26
75.94
49.04
Soil
-
56.93
44.29
41.13
41.13
Waterlogged
+
137.12
82.36
69.62
52.2
-
52.2
50.62
112.32
39.55
60% of MHC
Soil + Endosulfan at 0.5
+
147.12
105.97
148.71
41.3
mg a.i kg-1
-
64.53
53.78
175.92
96.56
Waterlogged
+
148.73
83.51
186.67
117.06
-
58.54
77.52
99.67
50.62
60% of MHC
Soil + Chloropyriphos
+
137.63
80.35
147.13
58.53
at 0.5 mg a.i kg-1
-
72.26
60.12
129.72
83.83
Waterlogged
+
145.09
66.44
161.36
96.5
-
50.62
93.34
120.19
41.13
60% of MHC
Soil + Endosulfan at 1.0
+
149.68
146.61
169.27
64.47
mg a.i kg-1
-
55.42
44.29
100.03
50.62
Waterlogged
+
117.03
80.68
169.27
79.28
-
69.93
66.44
109.16
34.83
60% of MHC
Soil + Chloropyriphos
+
142.38
121.81
159.79
72.77
at 1.0 mg a.i kg-1
-
72.84
56.95
124.98
87.01
Waterlogged
+
148.41
129.72
142.38
88.53
Soils(S)
0.0176
0.0375
0.0176
0.0176
Nitrogen(N)
0.0144
0.0308
0.0144
0.0144
Moisture(M)
0.0144
0.0308
0.0144
0.0144
Endosulfan
SXN
0.0246
0.0534
0.0246
0.0246
SXM
0.0246
0.0534
0.0246
0.0246
NXM
0.0202
0.0434
0.0202
0.0202
SXNXM
0.0349
0.0754
0.0349
0.0349
CD (P=0.05)
Soils(S)
0.0185
0.0402
0.9889
0.7657
Nitrogen(N)
0.0152
0.0328
0.8073
0.6252
Moisture(M)
0.0152
0.0328
0.8073
0.6252
Chloropyrophos
SXN
0.0264
0.0569
1.3983
1.0827
SXM
0.0264
0.0569
1.3983
1.0827
NXM
0.0214
0.0463
1.1417
0.8842
SXNXM
0.0372
0.0804
1.9777
1.5314
368