Sugar Mill Effluent Utilization in the Cultivation of Maize (Zea mays L.) in Two Seasons
Table 3
Effects of sugar mill effluent concentration and season interaction on physicochemical characteristics of soil used in the cultivation of Z. mays in both seasons.
Season × %SME
EC (dS·m−1)
pH
OC (mg·kg−1)
Na+ (mg·kg−1)
K+ (mg·kg−1)
Ca2+ (mg·kg−1)
Mg2+ (mg·kg−1)
Rainy
0
1.92
7.63
0.52
25.48
164.53
16.52
23.43
20
2.98ns
7.82ns
3.68*
33.96*
188.55ns
29.67*
38.86*
40
5.66*
8.01ns
6.34**
60.85*
237.94**
69.88**
59.96**
60
7.78*
8.26*
10.92**
77.86*
265.68**
98.65**
7.36**
80
9.86*
8.43*
15.88**
87.63**
290.98*
128.52**
74.82*
100
12.88**
8.63*
18.86**
96.76**
324.75*
144.87**
88.69*
Summer
0
1.94
7.64
0.54
25.68
165.88
17.86
23.69
20
3.72ns
7.94ns
4.01*
35.69*
192.86ns
31.75*
48.85*
40
6.36*
8.15ns
6.96**
65.25*
248.68**
79.84**
72.32**
60
8.48*
8.37*
17.86**
87.36*
278.98*
117.56**
78.69**
80
11.55*
8.52*
19.78**
89.69**
299.36*
148.69**
85.55*
100
14.96**
8.72*
21.84**
99.36**
334.88*
159.96**
98.69*
ns, , nonsignificant or significant at ≤ 0.05 or ≤ 0.01, respectively, least squares means; SME: sugar mill effluent.
