Cucumbers for 10 rubles/kg: Buyers rejoice, farmers weep

It’s the season for fresh fruits and vegetables. Prices for some of them this year are as low as ever. For example, at the wholesale market the price for a kilo of cucumbers starts from 10 rubles, and you can retail big Bakhchisaray strawberries for 150 rubles / kg. It turns out that Crimean farmers trade at a loss. What is the reason for this?