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Iron
Deficiency Chlorosis
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Iron Chlorosis Deficiency (IDC)
is a common yield-limiting factor for soybean grown on high-pH,
calcareous soil and has been reported in the Great Plains and in the
North-Central United States. Iron deficiency results in a
characteristic interveinal chlorosis in new leaves and can cause
substantial yield loss in soybean. In some years, chlorosis develops
during early growth stages and disappears as the plants mature. In
more severe cases, chlorosis can persist throughout the entire
season. Chlorosis generally occurs in patchy areas of fields and
frequently, but not always, in low areas. The chlorotic patches do
not occur in a pattern consistent with changes in soil type. There is
a wide variation in susceptibility to IDC among soybean varieties,
and variety selection is the most important management practice for
producers with chlorosis-prone soils.
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Resources
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