A record heat wave in some of Europe’s key farming regions has put this year’s corn crop at risk, Bloomberg reported Monday.

Corn crops are in full bloom and adverse weather may reduce the number of kernels that eventually fill with grain. Temperatures in some areas of Europe have reached 47 degrees Celsius, with Spain, France, Greece and Portugal particularly hard hit.

The EU normally imports large volumes of maize, which is mainly used as animal feed, from Ukraine, but shipments this year have been limited by the conflict. According to Bloomberg, this has pushed prices higher, with Paris corn futures up 11% in July and trading at a record high for the time of year. Sunflower and soybean fields are also at risk from hot, dry conditions, the publication adds.

Europe’s wheat harvest has also been affected by unusually warm weather. Last week, France, the EU’s top wheat exporter, said its soft wheat production will fall by around 7% this year, below the five-year average.

This comes amid reduced supplies of wheat and other grains from major producers in Russia and Ukraine, amid the ongoing conflict between the countries. Other leading exporters, such as India and Kazakhstan, have restricted or banned their grain exports, citing domestic food security. The events have triggered warnings of a potential global food crisis.

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