Plant Density and Time of White Lupine (Lupinus Albus L.) Relay Cropping with Tef (Eragrostis tef (Zucc.) Trotter) in Additive Design in the Highlands of Northwest Ethiopia

Table 5

Competitive ratio and actual yield loss of tef and lupine in tef-lupine intercropping system combined over years in 2016 and 2017 main cropping seasons in northwest Ethiopian highlands.

T	IR (cm)	TI (weeks)	CRT	CRL	AYLt	AYLl	AYLtt
T1	20	1	0.84^e	1.92^a	−0.54^d	−0.64^d	−1.18^d
T2		2	1.02^b	0.98^c	−0.28^c	−0.61^d	−0.89^c
T3		3	1.40^c	0.80^c	−0.17^c	−0.72^e	−0.89^c
T4	40	1	1.42^c	1.41^b	0.51^b	0.62^a	1.13^a
T5		2	1.84^b	1.03^c	0.63^a	0.50^b	1.15^a
T6		3	2.96^a	0.92^c	0.58^a	0.50^c	1.08^b
	SE ±	0.19	0.11	0.11	0.04	0.06

T = treatment; CR = competitive ratio of tef and lupine in intercropping; AYL = actual yield loss of tef and lupine in intercropping; IR = inter-row spacing of lupine; TI = time of lupine intercropping in weeks; COS = combined over years; SE ± = standard error.