"Export of all varieties of onions... Will be subject to an MEP of USD 700 FOB (free on board) per MT (tonnes)," the Directorate General of Foreign Trade (DGFT) said in a notification dated August 24.
On August 22, the government had announced the rise in minimum export price of onions sharply to USD 700 per tonne to curb shipments and boost domestic supply to control spiraling retail prices.
MEP is the rate below which no exports are allowed. The rise in MEP restricts exports and improves domestic supply.
Wholesale prices of onion today fell below the Rs 50 per kg mark at Lasalgaon in Maharashtra, Asia's biggest onion market, due to curbs on exports and fear of action against hoarding.
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Even at Azadpur mandi in Delhi, wholesale onion price declined Rs 3-5 per kg to Rs 53 today on increase in arrival of new crop from Karnataka and Andhra Pradesh.
The export price was last raised to USD 425 per tonne from USD 250 on June 26.
Onion exports fell to 10.86 lakh tonnes in 2014-15, from 13.58 lakh tonnes in the previous year.