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Zinc Deficiency

Zinc is a “micronutrient” which means it is only required in small amounts and it is immobile in plants once it has been taken up. The role of zinc in plants is related to the synthesis of enzymes, which in turn affects the production of proteins, carbohydrates, and chlorophyll. Since zinc is an immobile nutrient, the signs of deficiency will usually only present themselves in new plant growth. Symptoms of the deficiency will appear as stunted growth, short internodal spacing, interveinal yellowing, or even chlorosis, and in some cases, the leaves will cup upward. These symptoms are similar to other nutrient issues, so it is important that zinc deficiency is diagnosed correctly.

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Can be caused by:

• Improper pH
• Nutrient Lockout
• Phosphorus/Potassium Toxicity

Preventative: Be sure to carefully monitor the amount of phosphorus in the grow media and the water used on plants. This is because there is an antagonistic relationship between phosphorus and zinc. When there is an excess amount of phosphorus it can cause a zinc deficiency.

If there is a zinc shortage, adding a small amount of the nutrient to replenish the water or grow media is simple. Since this is a micronutrient, always apply small amounts over extended periods of time, since over application can lead to a zinc toxicity.


• Zinc Sulfat
• Chelated Zinc
• Zinc Oxide