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

Table 3

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

Tree species	Oxygen
	100% wood	5% bark	10% bark	100% bark	Mean
A. leiocarpus	45.26^a	43.28^b	42.49^c	41.61^d	43.16^a
C. arereh	45.12^a	43.80^b	42.76^c	40.73^d	43.10^a
B. aegyptiaca	45.18^a	43.62^a	41.48^b	39.02^c	42.33^ab
C. molle	43.90^a	42.65^ab	41.62^b	40.99^b	42.29^ab
T. mollis	42.17^a	42.78^a	43.72^a	39.81^b	42.12^b
T. indica	42.70^ab	43.12^a	41.69^b	40.32^c	41.96^b
S. birrea	39.49^b	41.73^a	42.69^a	43.08^a	41.75^b
C. lamprocarpum	41.85^b	43.02^a	44.54^a	38.11^c	41.88^b
P. reticulatum	35.71^d	39.16^c	41.62^b	44.39^a	40.22^c
A. sieberiana	41.16^b	41.83^b	42.93^a	39.71^c	41.41^b

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.