Agriculture Reference
In-Depth Information
Table 2. Effect of cultivar and liming acid soil on soybean nodule numbers
Nodule numbers (Nodules 10 plants
-1
)
Cultivar
2002/2003
2003/2004
- Lime
+Lime
%
Response
-Lime
+Lime
%
Response
Magoye
32
61
90.6
82
454
453.7
Safari
87
96
10.3
73
286
291.8
Solitaire
33
57
72.7
122
192
57.4
Storm
52
64
23.1
101
174
72.3
LSD
(P<0.05)
Lime
Cultivar
Interaction
36.5
21.0
36.8
68.8
44.4
72.8
Table 3. Effect of cultivar and liming acid soil on soybean nodule dry matter yield
Nodule dry matter yield (g 10 plants
-1
nodules)
Cultivar
2002/2003
2003/2004
- Lime
+Lime
% Response
-Lime
+Lime
% Response
Magoye
0.42
0.48
13.7
0.21
0.96
368.3
Safari
0.55
0.58
5.5
0.19
0.55
193.6
Solitaire
0.31
0.42
26.2
0.29
0.45
56.1
Storm
0.38
0.56
47.9
0.17
0.32
92.3
LSD
(P<0.05)
Lime
Cultivar
Interaction
0.362
0.133
0.334
0.274
0.241
0.346
Nodules produced in the two seasons in both limed and unlimed plots were highly
effective (>95%) (data not presented). However, the number of effective nodules was
relatively low for Magoye (and Safari on unlimed soil) in both unlimed and limed soil. In the
second season nodule effectiveness for Magoye was significantly (LSD
0.05
= 3.11) lower
compared to the other three cultivars.
3.3. Effect of Liming, N and P Fertilisation on Nodulation
Liming improved nodule number in both the first and second seasons by an overall
average of 21% and 56%, respectively (p < 0.05). The increase in nodule number due to
liming was in treatments where AN fertilizer had not been applied (Table 4). The application
of 30 kg N ha
-1
significantly reduced nodule number in both seasons by an overall average of
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