Zinc sulfate (ZnSO4) is a colorless, odorless, water-soluble compound used to treat trees growing in soil lacking in the nutrient zinc. Recovered during the refining process of zinc ore, the compound is applied as a powder around the base of trees or dissolved in water and sprayed on orchard stock.
Zinc fertilizer with pecan trees
Plant pecan trees in deep, fertile, well-drained soil that allows a healthy root system to develop. Small areas of amended soil tend to hold pooled water at the bottom and will cause roots to rot and die, according to Texas A&M University. In the first few years after planting a young pecan, nitrogen and zinc are the most important nutrients for good development. Even mature trees will continue to need periodic applications of zinc.