Table 1.

Summary of number of trials, cassava clones, plots, blocks and mean fresh root yield (FYLD) per environment.

Environment	Trial	Clones	Plots	Blocks	FYLD (t/ha)
Abuja20	2	67	144	4	26.0
Ago-Owu18	2	67	216	6	34.0
Ago-Owu19	2	67	216	6	28.7
Ago-Owu20	2	67	144	4	41.0
Ibadan18	1	33	99	3	36.8
Ibadan19	2	67	216	6	39.9
Ibadan20	2	67	144	4	26.5
Ikenne17	1	34	102	3	37.0
Ikenne18	3	96	318	9	34.1
Ikenne19	2	67	216	6	17.4
Ikenne20	2	67	144	4	41.9
Kano19	2	67	216	6	15.2
Mokwa17	1	34	102	3	22.4
Mokwa18	3	96	318	9	31.7
Mokwa19	2	67	216	6	20.9
Mokwa20	2	67	144	4	18.6
Onne18	1	34	102	3	28.9
Onne19	2	67	216	6	16.9
Onne20	1	36	72	2	13.0
Otobi18	1	34	102	3	25.9
Otobi19	2	67	216	6	41.6
Ubiaja17	1	34	102	3	33.2
Ubiaja18	1	34	102	3	27.6
Ubiaja20	2	67	144	4	15.7
Umudike17	1	34	102	3	24.2
Umudike18	1	34	102	3	21.3
Umudike19	2	67	216	6	31.9
Zaria20	2	67	144	4	13.7