Iron Deficiency Chlorosis of Soybean

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Disease: Iron Deficiency Chlorosis

Basics

Symptoms

Links to state resources

Founded by the North Central Soybean Research Program --and funded by the Soybean Checkoff – this website is a portal to current, science-based information on soybean pests and diseases, from university soybean researchers throughout the 12-state region.

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Iron Deficiency Chlorosis - Risk Assessment

Field symptoms of IDC.
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Photo credit: University of Nebraska

Recent research indicates that the following variables are indicators of potential iron deficiency chlorosis:

history of IDC
high soil pH (greater than 7.5 - 7.8)
high soil moisture, in particular heavy soils that remain wet, or low, wet pockets of the field
flooded soil
high natural bicarbonate levels which are generally indicated by high calcium carbonate equivalents and high soluble salts.
low soil temperatures
residual nitrates from previous crops

Plant Health Initiative