questions: query regarding storage of potato for seed purpose. 
 answers: treat the seed with 30 gram of boric acid powder in 1 liter of water for 30 minutes. after that dry the seed in shade in a single layer for 2 days and then treat the potatoes again with any one fungicide like captan/captaf/ carboxin 4 gram per kg of seed. and then strore in bamboo tray or basket in a cool, dry place air circulated area. also provide dry neem leaves in the trays/basket.