Evaluation of Soil Drainage Methods for the Productivity of Waterlogged Vertisols in Jama District, Eastern Amhara Region, Ethiopia

Table 2

Rainfall (mm), runoff (mm), runoff coefficient (%), and sediment yield analysis results during the growing periods with their combined mean.

Treatments	2017			2018			Combined
	RO	RC	Sed	RO	RC	Sed	RO	RC	Sed
BBF120	272.27^a	54.09	8.09	312.37^a	55.91	10.04	292.32^a	55.05	9.12
BBF80	264.38^a	52.52	8.04	282.10^b	50.49	9.23	273.20^ab	51.45	8.64
BBF40	239.47^b	47.57	6.08	271.40^b	48.58	8.83	255.30^b	48.07	7.45
Std	17.12	3.40	1.15	21.25	3.80	0.62	18.51	3.49	0.86
CV (%)	11.60	—	14.53	9.14	—	7.40	12.12	—	17.52
LSD (α = 5%)	15.06	—	NS	57.27	—	NS	23.79	—	NS
RF	503.40			558.70			531.05

RO: runoff; RC: runoff coefficient; Sed: sediment; RF: rainfall; NS: not significant. Different superscript letters represent significant differences (), whereas means followed by the same letter are not significantly different ().