Relationship between Color and Total Organic Carbon in Compost

Table 2

TOC and values in compost samples in two particle sizes.

Size	TOC (mg/g)
A	77.15	30.71	2.87	4.33	5.19	56.42
A	77.77	30.96	2.86	4.32	5.18	56.48
A	78.39	30.97	2.88	4.33	5.20	56.39
A	92.03	30.97	2.73	5.14	5.82	62.02
A	92.03	31.12	2.71	5.14	5.81	62.19
A	93.27	31.12	2.70	5.15	5.81	62.31
A	98.93	31.13	2.67	5.04	5.70	62.07
A	98.93	31.27	2.66	5.05	5.71	62.26
A	99.55	31.27	2.64	5.05	5.70	62.36
B	84.56	30.13	2.82	3.78	4.71	53.30
B	84.56	29.62	2.73	3.54	4.47	52.41
B	85.18	29.62	2.76	3.53	4.48	51.97
B	80.38	30.38	2.72	3.53	4.61	53.95
B	80.38	29.89	2.77	3.59	4.54	52.38
B	80.38	30.13	2.75	3.72	4.62	53.55
B	100.47	30.51	2.51	4.85	5.46	62.60
B	100.47	30.50	2.54	4.82	5.45	62.23
B	100.47	30.50	2.53	4.83	5.46	62.34
A	89.78 ± 10.92^a	31.12 ± 0.15^a	2.75 ± 0.11^a	4.84 ± 0.44^a	5.57 ± 0.33^a	60.28 ± 3.31^a
B	88.54 ± 10.56^a	30.14 ± 0.35^b	2.68 ± 0.13^b	4.02 ± 0.70^b	4.86 ± 0.51^b	56.08 ± 5.48^b
T-Student	NS

A = compost with a particle size of 0.5 mm; B = compost with a particle size of 2 mm; α = 0.05.