Rich in quercetin, shallot (Allium cepa L.) use is beneficial in controlling the COVID-19 pandemic since effective vaccines and pharmacotherapy are still in development. The study aimed to characterize functional groups of shallot tubers planted in the inorganic soil of the seasonal freshwater-wetland (IS-SFW)/Ts-of-RAMSAR-classification ecosystem. The shallot tubers that grew in IS-SFW for 60 days were manually harvested, sun-dried for seven days, and stored for two months before been pressed to produce sample juices. The peaks of wavenumber resulted from FTIR analysis were compared to the infrared database to determine possibly functional groups. The findings showed spectra changed in the fingerprint but not in the mid-IR other regions, indicated the IS-SFW did not affect functional groups beneficial in the COVID-19 treatment. The study concluded that shallot planted in IS-SFW is still beneficial in the COVID-19 treatment.

Planting shallots in lowland is constrained by the attack of plant diseases. Moler is most important diseases in shallots. The study aims to know suppression of moler diseases by ziram fungicide. The study was conducted on three types lands (peatlands, freshwater swamps and top soil) and two treatments (ziram treated and untreated). The results showed that the application of ziram fungicides was able to suppress the attack of moler disease on shallots ranges from 93-100 percent.