Ukraine has exported almost 14.3 million tonnes of grain so far in the 2022/23 season, down 30.7% from the 20.6 million tonnes exported by the same stage of the previous season, the latest agriculture ministry data showed.
Grain exports have slumped since Russia invaded Ukraine in February and closed off its neighbour's Black Sea ports, driving up global food prices and prompting fears of shortages in Africa and the Middle East.
Three Black Sea ports were unblocked at the end of July under a deal between Moscow and Kyiv that was brokered by the United Nations and Turkey.
Last week, Russia resumed its participation in the deal to free up vital grain exports from war-torn Ukraine after suspending it over the weekend in a move that had threatened to exacerbate hunger across the world.
Ministry data showed that exports so far in the July 2022 to June 2023 season included 5.4 million tonnes of wheat, 7.7 million tonnes of corn and 1.2 million tonnes of barley.
The government has said Ukraine could harvest between 50 million and 52 million tonnes of grain this year, down from a record 86 million tonnes in 2021 because of the loss of land to Russian forces and lower yields.
Elsewhere, the United Nations food agency's world price index edged slightly lower in October, the seventh consecutive monthly fall and some 14.9% down from its all-time high recorded in March.
The Food and Agriculture Organisation (FAO) said that its price index, which tracks the most globally traded food commodities, averaged 135.9 points last month versus a revised 136.0 for September.