Abstract:
:Swine waste land application has increased due to organic fertilization, but excess application in an arable system can cause environmental risk. Therefore, in situ characterizations of such resources are important prior to application. To explore this, 41 swine slurry samples were collected from Korea, and wide differences were observed in the physico-biochemical properties. However, significant (P<0.001) multiple property correlations (R²) were obtained between nutrients with specific gravity (SG), electrical conductivity (EC), total solids (TS) and pH. The different combinations of hydrometer, EC meter, drying oven and pH meter were found useful to estimate Mn, Fe, Ca, K, Al, Na, N and 5-day biochemical oxygen demands (BOD₅) at improved R² values of 0.83, 0.82, 0.77, 0.75, 0.67, 0.47, 0.88 and 0.70, respectively. The results from this study suggest that multiple property regressions can facilitate the prediction of micronutrients and organic matter much better than a single property regression for livestock waste.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Suresh A,Choi HLdoi
10.1016/j.biortech.2011.06.087subject
Has Abstractpub_date
2011-10-01 00:00:00pages
8848-59issue
19eissn
0960-8524issn
1873-2976pii
S0960-8524(11)00914-Xjournal_volume
102pub_type
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