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Fig. 2. Cluster analysis for (A) concentration of total phosphorous versus total sulfur in effluent from 29 swine manure management systems. (B) Analysis of variance (ANOVA) (compare all pairs) for CH4 emission rate from swine manure management systems categorized according to phosphorus and sulfur concentrations and the Tukey–Kramer HSD means comparison table (alpha level = 0.05). (C) Correlation between the concentration of VOCs present in air from manure management systems versus the mean odor intensity
