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Latest Micronutrient Articles
There have been numerous reports of corn that is slightly yellow, purple or striped. There are many reasons for these symptoms to occur. The top three that may cause this are 1) temporary or transient deficiency due to environmental conditions, 2) sidewall compaction and 3) nutrient shortage in the soil.
Sulfur (S) deficiency has been diagnosed in corn and wheat in Indiana in recent years. More than half the corn S deficiency experiments conducted in northeast Iowa since 2005 have responded to fertilizer S.
With the variation in conditions we have seen this spring there are a few issues that may show up in fields related to cool and wet soils. Purpling of corn leaves due to phosphorus (P) deficiency and early season interveinal striping due to sulfur (S) may occur if temperatures remain cool and we continue to have frequent rains.
Does the soybean crop need sulfur? (04/29/13)
Zinc fertility for corn (04/15/13)
Additional Micronutrients Links