Effects of Nitrogen Application on Growth and Ethanol Yield of Sweet Sorghum [Sorghum bicolor (L.) Moench] Varieties
Table 3
(a) Main effects of variety and N fertilizer on the leaf area index (LAI), leaf area ratio (LAR, cm2 g−1), net assimilation rate (NAR, g m−2 day−1), relative growth rate (RGR, g g−1 day−1), and crop growth rate (CGR, g m−2 day−1) of sweet sorghum at the Ilorin experimental site. (b) Main effects of variety and N fertilizer on the leaf area index (LAI), leaf area ratio (LAR, cm2 g−1), net assimilation rate (NAR, g m−2 day−1), relative growth rate (RGR, g g−1 day−1), and crop growth rate (CGR, g m−2 day−1) of sweet sorghum at the Ejiba experimental site.
(a)
Treatment
LAI
LAR
NAR
RGR
CGR
Variety (V)
NTJ-2
2.31
169.4
7.26
0.088
14.24
64 DTN
2.51
168.6
7.45
0.089
15.69
SW Makarfi 2006
1.96
151.2
7.69
0.079
13.88
SW Dansadau 2007
2.21
150.6
8.05
0.083
16.26
SED
0.064
7.54
0.514
0.006
0.818
LSD(0.05)
0.158
ns
ns
ns
ns
Fertilizer (F) (kg N ha)
0
1.53
179.8
6.36
0.083
8.36
40
2.28
160.3
7.43
0.082
14.84
80
2.11
163.3
6.81
0.080
12.72
120
2.61
143.9
9.02
0.090
19.79
160
2.71
152.4
8.43
0.088
19.37
SED
0.127
6.15
0.514
4.516
1.148
LSD(0.05)
0.259
12.52
1.047
ns
2.339
Interaction
V × F
ns
ns
ns
Means followed by the same letters are not significantly different from each other at 5% probability level. LSD(0.05): least significant difference at 5% probability level. SED: standard error of difference. denotes significance at 1% probability level. ns: not significant.
(b)
Treatment
LAI
LAR
NAR
RGR
CGR
Variety (V)
NTJ-2
1.96
146.9
15.95
0.113
26.08
64 DTN
1.81
159.1
17.21
0.118
26.74
SW Makarfi 2006
1.54
135.4
22.28
0.118
31.04
SW Dansadau 2007
1.91
129.9
19.81
0.112
33.90
SED
0.114
4.03
1.382
0.003
3.816
LSD(0.05)
0.278
9.86
3.381
ns
ns
Fertilizer (F) (kg N ha)
0
1.36
150.0
15.60
0.106
19.35
40
2.00
142.5
21.28
0.121
36.79
80
1.93
142.5
18.48
0.117
29.64
120
2.03
129.3
20.90
0.115
35.92
160
1.69
149.9
17.80
0.116
25.49
SED
0.131
9.28
1.282
0.0058
2.918
LSD(0.05)
0.266
ns
2.612
ns
5.943
Interaction
V × F
ns
ns
ns
ns
Means followed by the same letters are not significantly different from each other at 5% probability level. LSD(0.05): least significant difference at 5% probability level. SED: standard error of difference. denotes significance at 5% probability level. ns: not significant.
