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From Black Sea to US Midwest, extreme weather threatens crop output

Hot, dry weather forecast for Russia, Ukraine in coming months; relief seen for China's corn, soybean crops hit by heatwave

Forecast dryness in the Black Sea region's breadbasket is likely to stunt sunflower and corn yields, while heavy rain in the United States after near-record temperatures threaten to take a toll on crops, hitting world supplies and pushing prices higher.