The mulch in its "current form," was "not suitable for use on broadacre agricultural soils" because of residual metals, plastics and glass contaminants, it found.
Isivalo sembozo "esesimweni samanje", "besingakulungele ukusetshenziswa enhlabathini yezolimo ebanzi" ngenxa yezinsimbi ezisele, amapulasitiki kanye nokungcola kwengilazi, kutholakele.