ST. PAUL — Scattered rainfall has created muddy field conditions that are making harvesting a challenge in parts of Minnesota.

The U.S. Department of Agriculture said Monday in its weekly crop progress and condition report for Minnesota that farmers had 3.8 days suitable for fieldwork last week.

The report said 87 percent of Minnesota’s corn crop has reached maturity, 12 days ahead of the five-year average. The harvest of corn for grain reached 8 percent complete, over two weeks ahead of last year and six days ahead of average.

Minnesota soybeans are also developing ahead of schedule. Twenty-seven percent of the crop had been harvested as of Sunday, 10 days ahead of last year’s pace and one day ahead of average.

The sugarbeet harvest was 18 percent complete, one week ahead of average.