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Fertilizer burn can occur to the soybean seed from an in-furrow application and to the foliage from a foliar application. An in-furrow application can cause salt injury or ammonium toxicity to the soybean seed. Fertilizer is somewhat rarely applied to soybeans over-the-crop, however if it is done fertilizer burn can occur depending on source and concentration. This factsheet discusses the symptoms and management of fertilizer burn.