Translated automatically from Indonesian.
The Directorate General of Horticulture's archive mentions Sutipan and Muhasan with different seed-drying methods.
House attic and furnace embers
The Directorate General of Horticulture's visit report to the Probolinggo seed warehouse recorded the method used by Sutipan, a BB 99 partner in Tegalsiwalan Village, of placing seeds in the house attic so that they are exposed to sunlight. The report mentions a drying period of about 60 days.
In the same report, Muhasan used smoke from furnace embers to dry seeds for a similar length of time. He is also mentioned as a seed grower residing in this village.
Old notes, not a guide for today
The source page has a more recent upload date, but its contents discuss supplies up to March 2016. The methods recorded describe practices at the time of that visit, not evidence that those methods are still used today.
The condition of the storage space, seed health, and intended use determine the appropriate handling. For current practices, ask local seed growers or agricultural extension officers.
Source
Directorate General of Horticulture — visit to the Probolinggo seed warehouse
