sir if I buy when prices are low, price will go up at that time. then if I sell when prices are high, prices will come down. Net result would be that prices would stabilize instead of going down during season and going up off season.
But if you're talking of hoarding a major part of the supply, that us small timers can't do. at most maybe you could buy 0.1% of the supply? right? that is nothing. for example, the potato produce of pakistan in money terms is ~rs100 billion at current prices. how much of it can you buy?
Our country has 20-30% more supply than what is needed. so even if you can hoard upto 10-20% of supply, it's not that big a deal, price will go up, others will produce more. when you sell, you lower the prices again.
and no, its not the other way around here, its like that everywhere.