Effect of Tillage Method and Mulch Application on Growth and Yield of Green Gram in Semiarid Kenya

Table 4

Root biomass of green gram under contrasting tillage method and mulch in Katumani and Mwea.

	Katumani; Flowering	Maturity	Mwea; Flowering	Maturity
Tillage method
Conventional tillage	1.92b	3.72b	1.59b	3.60b
Furrow-ridge	2.59a	4.50a	1.88a	3.98a
Zero tillage	2.03b	3.21c	1.56b	3.45b
LSD	0.25	0.37	0.214	0.36
-value	0.004	0.001	0.03	0.033
Mulch
0 t·ha^−1 mulch	1.69b	3.38b	1.32b	3.30b
3 t·ha^−1 mulch	2.67a	4.30a	2.03a	4.06a
LSD	0.10	0.41	0.11	0.22
-value	<.001	0.001	<.001	<.001
Variety
KS20	2.16a	3.83a	1.67a	3.66a
N26	2.20a	3.85a	1.69a	3.70a
LSD	0.08	0.10	0.25	0.05
-value	0.343	0.787	0.133	0.158
Interactions
Tillage × Mulch	0.003	0.144	0.283	0.348
Tillage × Variety	0.798	0.927	0.475	0.493
Mulch × Variety	0.072	0.991	0.096	0.929
Tillage × Mulch × Variety	0.377	0.647	0.696	0.072

LSD is the least significant difference; means followed by the same letter are not significantly different at .