(Reuters) – The price of bread rose by almost a fifth in the European Union in August as Russia’s invasion of Ukraine, both major exporters of grains and fertilisers, continued to disrupt global markets and headline inflation accelerated. Global wheat prices have surged since February, after the war halted grain exports from the Black Sea for months and restricted fertiliser shipments as Russian producers lost access to Baltic Sea ports they had used to ship ammonia, a key ingredient in nitrate fertiliser. The average price of bread in the EU was 18% higher in August 2022 than a year earlier, …