Drying with solar-heated air is satisfactory as long as the sun is shining. To continue this process through the night and periods of cloud cover, it is necessary to either store some of this energy in a thermal mass or incorporate desiccants within the drying system. Thoruwa et al. reported the results from studies undertaken to develop three low cost solar regenerative clay-CaCl2 based solid desiccant materials. They established their moisture sorption and regeneration characteristics ; asseaaed their performance when compared with commercial desiccants and the integration of these within a low cost solar drying system for small-scale village-based crop drying.