Evaluation of Elemental and Chemical Compositions of Some Fuelwood Species for Energy Value

Table 4

Effect of bark inclusion on the sulphur content (%) of the selected fuelwood species.

Tree species	Sulphur
	100% wood	5% bark	10% bark	100% bark	Mean
A. leiocarpus	0.19^b	0.22^ab	0.23^ab	0.26^a	0.33^d
C. arereh	0.07^b	0.28^a	0.29^a	0.33^a	0.24^d
B. aegyptiaca	0.06^b	0.10^b	0.11^b	0.95^b	0.31^cd
C. molle	0.37^b	0.37^b	0.37^b	0.41^a	0.38^c
T. mollis	0.06^b	0.15^b	1.11^a	1.14^a	0.62^b
T. indica	0.11^b	0.17^b	1.09^a	1.14^a	0.63^b
S. birrea	0.18^c	0.22^c	0.98^b	1.16^a	0.64^b
C. lamprocarpum	0.22^b	0.23^b	0.91^a	1.25^a	0.65^b
P. reticulatum	0.81^b	0.82^b	0.82^b	0.995^a	0.85^a
A. sieberiana	0.85^b	0.86^b	0.98^a	1.01^a	0.93^a

Values with the same alphabets within the same rows are not significantly different, and values with the same alphabets in the mean column are not significantly different using Duncan multiple range test at α = 0.05.