Compost and Crude Humic Substances Produced from Selected Wastes and Their Effects on Zea mays L. Nutrient Uptake and Growth
Table 7
Chemical properties of crude humins from different composts.
Property
Rice straw
Rice husk
Sawdust
EFB
pHwater
9.42d (±0.01)
9.63c (±0.02)
9.80b (±0.01)
9.86a(±0.01)
pHKCl
9.22d (±0.00)
9.40c (±0.01)
9.45b (±0.01)
9.81a (±0.01)
OM (%)
73.33c (±1.20)
75.00c (±0.58)
90.33a (±0.88)
84.67b (±1.33)
TOC (%)
42.53c (±0.70)
43.50c (±0.33)
52.39a (±0.51)
49.11b (±0.77)
CEC (cmol kg−1)
62.00a (±3.86)
46.07b (±1.10)
52.60ab (±1.90)
46.07b (±1.27)
Total N (%)
1.39a (±0.05)
0.84bc (±0.03)
0.72c (±0.04)
0.95b (±0.02)
Total P (%)
0.62a (±0.02)
0.34b (±0.00)
0.23c (±0.01)
0.30b (±0.02)
Different alphabets within a row indicate significant difference between means using Tukey’s test at . ( ) values in parenthesis represent standard error of the mean.