Most producers take it for granted that the corn seed they buy has been treated with an effective fungicide to help prevent seedling diseases. It is true that corn seed treatments are effective, and the specific products used to treat the seed are evolving. Recent trends in corn seed treatment are continuing in 1999: most seed has been treated with Maxim+Apron. It is estimated that about 80 percent of the corn seed planted in the United States will be treated with Maxim+Apron or Maxim XL, with the remaining 20 percent having a Captan+metalaxyl treatment.