Proximate Chemical Analysis and Effect of Age and Height of Oxytenanthera abyssinica on Fiber Morphology and Chemical Compositions for Pulp and Paper Production Potential

Table 1

Fiber dimensions (top, middle, and bottom) of Oxytenanthera abyssinica.

Position	Statically value	Fiber length (mm)	Fiber diameter (μm)	Cell wall thickness (μm)	Fiber lumen diameter (μm)
Top	N	14	14	22	20
		^a	^a	^a	^a
	95% CIL	1.91	16.87	1.86	12.71
	95% CIU	2.54	20.45	3.16	15.79
Middle	N	14	14	20	22
		^a	^a	^b	^a
	95% CIL	2.02	18.76	2.55	12.80
	95% CIU	2.75	25.20	3.25	18.28
Bottom	N	14	14	20	20
		^b	^a	^b	^a
	95% CIL	2.22	23.12	2.11	16.34
	95% CIU	2.96	26.62	3.71	17.86
Average for a plant	N	42	42	62	62
	95% CIL	2.20	20.18	2.53	13.84
	95% CIU	2.60	23.48	2.95	17.42

All data were examined in triplicate, and the mean value ± SD was used. Values in the same column with the identical English alphabetical letter are not significantly different () and the value in a and b are significantly difference (P ≤ 0.05), with a confidence limit of 95%. Where: STD: standard deviation, CI_L: confidence interval lower, CI_U: confidence interval upper, N: number, x̄: mean value.