Humic acid characterization of compost derived from animal, farm and industrial wastes
2019
Pabiona, M.G. | Lacaolacao, E.O.
The study was conducted at the rainout shelter at the College of Agriculture, Central Mindanao University, Musuan, Maramag, Bukidnon [Philippines]. It aimed to: (1)determine the pH, organic carbon, total N, total P and total K of composts and humic acid derived from animal, crop and industrial wastes, and (2)evaluate the humus quality by spectrometric methods and Q sub 4/6 values. The chemical analysis of compost showed that total potassium, pH and percent recovery were significantly different among compost, in which C4 (goat manure + coffee hull + bagasse + mudpress) obtained the highest pH and total potassium value and C3 (goat manure + rice straw + bagasse + mudpress) has the lowest pH value, on the percent recovery the highest value was obtained by C1 (goat manure + rice hull + bagasse + mudpress) and the lowest value was obtained by C3(goat manure + rice straw + baggase + mudpress). Based on the results of the study, in comparison to all the compost treatments, C4 (goat manure + coffee hull + bagasse + mudpress) appeared to be the best recommendable compost due to its promising characteristics such as higher nutrient concentration. Furthermore, C2 (goat manure + corn cob + bagasse + mudpress) obtained the highest value (8.19) in Q sub 4/6 but appeared to be low in quality of humus.
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