Effect of Tillage Method and Mulch Application on Growth and Yield of Green Gram in Semiarid Kenya
Table 6
Shoot biomass, grain yield, and harvest index under contrasting tillage methods and mulch in Katumani and Mwea.
Treatments + interactions
BH (t ha-1)
Y (t ha-1)
HI (%)
BH (t ha-1)
Y (t ha-1)
HI (%)
Conventional tillage
3.13b
0.93c
30
3.0b
0.91b
31
Furrow-ridge
3.63a
1.09a
30
3.5a
0.96a
27
Zero tillage
3.22b
1.01b
31
3.0b
0.92ab
31
LSD
0.19
0.03
0.02
0.17
0.05
0.03
value
0.004
<.001
0.125
0.002
0.044
0.04
Mulch
0 t·ha−1
3.1b
0.94b
31
2.9b
0.85b
30
3 t·ha−1
3.6a
1.08a
30
3.5a
1.01a
29
LSD
0.29
0.03
0.03
0.21
0.05
0.03
value
0.005
<.001
0.453
<.001
<.001
0.77
Variety
KS20
3.1b
0.9b
31
3.0b
0.91b
30
N26
3.6a
1.1a
30
3.4a
1.01a
30
LSD
0.12
0.02
0.01
0.13
0.05
0.02
value
<.001
<.001
0.371
<.001
<.001
0.51
values for interactions
Tillage°×°mulch
0.01
0.19
0.43
0.31
0.57
0.46
Tillage°×°variety
0.38
0.02
0.08
0.83
0.23
0.28
Mulch°×°variety
0.09
0.01
0.24
0.19
0.38
0.93
Tillage°×°mulch°×°variety
0.05
0.04
0.03
0.21
0.56
0.79
LSD is the least significant difference; BH = biomass at harvest, Y = yield, HI = harvest index, and means followed by same letter are not significantly different at .
