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 1

Some important physicochemical properties of the experimental soils before plowing.

Soil and manure property	Soil analysis		Rating references
	Value	Rating
Particle distribution
Sand (%)	32
Silt (%)	25
Clay (%)	43
Soil texture class	Clay
pH (H2O)	5.1	Strong acidic	Hazelton and Murphy [22]
Total N (%)	0.09	Low	Havlin et al. [25]
Organic C (%)	1.27	Low	Charman and Roper (2007)
Avail. P (ppm)	6.85	Very low	Tekalign [26]
Exch. Mg (Meq/100 g)	0.84	Low	Metson [28]
Exch. Ca (Meq/100 g)	2.78	Low	Metson [28]
CEC	20.20	Moderate	Landon [27]