One way to evaluate the tolerance of a variety to IDC is to use visual ratings at the early vegetative and flowering stages.
Released February 1, 2010
FARGO, N.D. — Variety selection is one of the best ways to manage iron-deficiency chlorosis (IDC) problems in soybeans. IDC symptoms include yellowing between the veins of the trifoliate leaves and can result in growing-point death. With precision planting and global positioning systems, it is may be possible in the future to plant two different varieties on the same field.
Growers can map their fields to show those areas that are susceptible to IDC. Producers need to map the field in a year when they grew soybeans on that field and a year when the IDC areas showed up as yellow soybeans in the early vegetative stages.
--continued on North Dakota State University Extension news
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