Assertion: periwinkle's use | /r/HasProperty | possible
Facets:
Source sentences:
text: Duan emphasized that the results are limited to greenhouse settings and that the chemical compounds, penicillin G sodium and biocide 2,2-dibromo-3-nitrilopropionamide (DBNPA), must still be evaluated in field trials and approved for use by regulatory agencies before commercial use is possible.