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 3

Production efficiency of tef-lupine intercropping combined over years in 2016 and 2017 main cropping seasons in northwest Ethiopian highlands.

T	IR (cm)	TI (weeks)	LER	TEY (t ha-1)	ATER	SPI	MAI
T1	20	1	0.83^c	1.29^c	0.63^d	1.50^d	−433^c
T2		2	1.12^b	1.77^b	0.79^c	1.84^c	5069^b
T3		3	1.13^b	1.79^b	0.74^c	1.70^c	6891^b
T4	40	1	1.48^a	2.33^a	1.10^a	2.49^a	4944^b
T5		2	1.54^a	2.45^a	1.11^a	2.50^a	15206^a
T6		3	1.42^a	2.30^a	1.01^b	2.15^b	13492^a
	SE±	0.05	0.09	0.04	0.08	1532

T = treatment; LER = land equivalent ratio; TEY = tef equivalent yield; ATER = area time equivalent ratio; SPI = system productivity index: MAI = monetary advantage index; IR = inter-row spacing of lupine; TI = time of lupine intercropping in weeks; SE ± = standard error.