Moisture content present in the agricultural producers leads to microbial spoilage of such items.
It is therefore important to remove free water available in such produces with an intention of avoiding activities of spoilage organisms.
Many drying systems are available for crop drying.
However, artificial dryers are not economically feasible.
Many people in remote areas therefore use open solar drying long years ago.
Hygienic nature of such system is still in question.
Introduction of PV technology in this regard is now promising to design solar driven artificial dryers for better operations.