Table 2:
Cropping system effects on cowpea nodules number (nodules/plant), nodules dry weight (mg/plant) at bloom stage, and cowpea and millet grain yield (kg/ha) in farmers’ fields in 2010.
Cropping systems
Cowpea nodules number by plant
Cowpea nodules dry weight (mg/plant)
Cowpea grain yield (kg/ha)
Millet grain yield (kg/ha)
Farmers’ control
No
*
No
*
No
*
465
a
Cowpea variety CZ11-94-5C sole crop
22
a
160
730
a
No
*
Cowpea variety IT89KD-374 sole crop
16
b
117
605
b
No
*
Millet/CZ11-94-5C alternate rows intercropping (1 row/1 row)
20
ab
140
390
c
335
b
Millet/IT89KD-374 alternate rows intercropping (1 row/1 row)
15
b
119
340
cd
350
b
Millet/CZ11-94-5C alternate rows intercropping (2 rows/1 row )
23
a
163
280
cd
485
a
Millet/IT89KD-374 alternate rows intercropping (2 rows/1 row)
17
b
139
245
d
495
a
Effect
value
value
value
value
Cropping system
<0.01
0.09
<0.01
<0.01
Coefficient of variation (%)
37.02
45.21
42.17
21.41
Means followed by the same letters in the same column are not significantly different (
), according to Duncan test.
No
*
: no millet.