The USDA says the amount of U.S. corn planted doubled over the past week.

As of Sunday, 8% of the crop is planted, compared to 4% a week ago and the five-year average of 8%, with 2% emerged, compared to 1% on average.

Soybean planting is just underway at 3%.

53% of U.S. winter wheat is rated good to excellent, steady with a week ago and 4% below a year ago, with 10% of the crop headed, compared to 14% normally in mid-April.

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