"According to our estimate, 15 to 20% of the onions procured from farmers, kept in godowns, have rotten due to the moisture," MP State Cooperative Marketing Federation's general manager Yogesh Joshi said.
The long distance between purchase centres and godowns, which were as much as 250 km apart at some places, also contributed to the wastage due to rotting, he said.
Meanwhile, MPSCMF has re-issued tenders, which would close on July 13, to sell off the procured onion stock.
In the first round of bidding, 15 traders offered to purchase the stock for prices ranging from 60 paise per kg to 2.60 per kg. The government wanted higher prices.
After the onion prices crashed and in some places farmers threw away the produce, Chief Minister Shivraj Singh Chouhan on June 1 had announced procurement at Rs 6 per kg.