Iron deficiency chlorosis (IDC) is a common disease of soybean in Northern States. Most seed companies give a chlorosis rating to their varieties, but companies use different rating scales that confuse farmers. Some seed companies do not provide side-by-side comparisons that can be used by farmers to select varieties most appropriate for their farm. The commercial chlorosis evaluations that are available to farmers are not satisfactory.

The objectives of this project are to screen about 250 public and commercial soybean varieties for resistance to IDC under field conditions; support the NDSU soybean breeding program.
and provide information to soybean growers, seed dealers and...