Japan plans to sell rice from emergency stockpiles to cut prices

What happens is for weather or bugs or disease or other reasons the crop yield for a year goes down, prices go up, gov tries various ways to bring prices artificially down, farmers cannot recoup their initial investment, some farmers kill themselves (happens a lot in agrarian countries like India, South East Asia, Africa, etc) , rest abandon farming altogether, others go into permanent family debt to last another year from loan sharks who do not care about laws.

This creates a Boom and Bust cycle of prices, and prevent any sort of long term price stabilization or ability for a country to progressively boost production of grains, milk, etc.

This is a political crisis that is often seen in many countries, and doing the right thing long-term is very hard for impulsive political climate, and the more you take the wrong steps the worse it becomes over the years.

I think it is clear that this is a political 'problem' that they're trying to solve, rather than an economic problem.