When a crop is sufficiently deficient in zinc, the plants can express symptoms often called zinc deficiency symptoms. Deficiency symptoms can be useful in recognizing that something is wrong with the plant and can lead to the discovery of the cause. Deficiency symptoms caused by the lack of different nutrients vary considerably in some cases but are similar in others. Remember that visual observation of a plant symptom should never be used alone to determine the cause of a problem. If a nutrient deficiency is expected based on plant symptoms, a tissue test should be used to confirm the diagnosis. Like a runny nose in humans similar looking symptoms in plants can be caused by multiple causes.

The crop zinc deficiency symptom pictures in this section where provided courtesy of IPNI. These and many other crop nutrient deficiency symptom pictures can be purchased on a thumb drive from IPNI's 2012 catalog.