Amendment of Tephrosia Improved Fallows with Inorganic Fertilizers Improves Soil Chemical Properties, N Uptake, and Maize Yield in Malawi
Table 6
Effect of T. vogelii and T. candida fallows and inorganic fertilizers on maize grain yield (t/ha), average yield increase (t/ha) over control and N0P0 (unfertilized fallow), stover and dry matter yield (t/ha), and harvest index (%) of species.
Species
Treatment
Grain yield
Yield increase over control
Yield increase over N0P0
Stover yield
Total dry matter
Harvest index
T. vogelii
Control
1.1
0
−4.4**
2.2
3.0
0.38
N0P0
5.5**
4.4**
0
6.8*
12.2**
0.45
N45P0
5.4**
4.3**
0.1
6.4*
11.8**
0.46
N68P0
5.9**
4.8**
0.4
6.7*
12.6**
0.48
N0P20
5.6**
4.5**
0.2
6.7*
12.3**
0.46
N0P30
5.8**
4.7**
0.3
6.5*
12.3**
0.49
N45P20
6.8**
5.7**
1.3
8.0**
14.7**
0.46
N45P30
5.2**
4.1**
−0.3
5.9*
11.1**
0.47
N68P20
5.7**
4.6**
0.2
7.1**
12.8**
0.45
N68P30
6.5**
5.4**
1.0
6.2*
12.7**
0.52
value
<0.0001
<0.0001
<0.0001
0.0254
<0.0001
0.7798
T. candida
Control
1.1
0
−3.3**
2.2
3.0
0.38
N0P0
4.4*
3.3
0
5.8
10.2
0.43
N45P0
4.7*
3.6*
0.3
6
10.8*
0.47
N68P0
4.5*
3.4*
0.1
6.3
10.9*
0.45
N0P20
4.0
2.9
−0.4
5.5
9.5
0.42
N0P30
3.8
2.7
−0.6
4.9
8.7
0.44
N45P20
4.7*
3.6*
0.3
4.8
9.6
0.50
N45P30
3.3
2.2
−1.1
4.1
7.4
0.47
N68P20
4.8*
3.7*
0.4
6.4
11.1*
0.42
N68P30
4.7*
3.6*
0.3
6.3
11.0*
0.42
value
0.0857
0.122
0.1642
0.3321
0.0991
0.9665
According to Dunnett’s test, in the same column, figures followed by * or **are significantly different from the control at and 0.01, respectively.
