WEATHER extremes are impacting on grain crops in the United States where drought has prevailed throughout the wheat-growing season in many areas, while flooding has hit some eastern grain-growing regions.

Drought conditions have set back crops across the primary hard red winter wheat agricultural belt and limited potential corn plantings in Texas, Oklahoma and Kansas where some areas have received their lowest rainfall in 30 years.

Source: US Drought Monitor

An earlier winter freeze caused widespread damage to winter wheat crops across the central Plains and Midwest.