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. 2017 Nov 27;11(11):e0006088. doi: 10.1371/journal.pntd.0006088

Fig 3. Nutrient content and annual cost of four fertilization scenarios utilizing human excreta and/or commercial fertilizer in Vietnam.

Fig 3

Nitrogen (N), phosphorus (P), potassium (K). Scenarios: A -Fresh human excreta (≤ 139 day storage) supplemented with nitrogen; B—Composted human excreta (153 day storage with 10% lime) supplemented with NPK; (C) Composted human excreta (181 day storage) supplemented with NPK; (D) Inorganic NPK fertilizer.