Can zinc deficiency be prevented?

Preventing zinc deficiency involves actions taken to manage the soil before the deficiency occurs, as opposed to reacting to it later. Proper strategies will enable the retention of an adequate zinc supply through effective pH management, strategic investment in organic matter, and targeted nutrient replenishment. These methods aid with soil resistance and maintain sustainable growing conditions. The cost of preventing deficiencies is significantly less than the cost of correcting them, resulting in a consistent crop yield.

Maintenance of soil pH is fundamental to zinc management. When the soil pH is above 6.8, zinc ions precipitate and become unavailable to plants. I apply elemental sulfur every spring, using approximately 5 pounds per 1,000 square feet to maintain optimal acidity in DGAs. This easy practice can increase zinc availability three to five times compared to no sulfur. Monitor pH annually in problem areas.

Organic matter is nature's zinc storage site. Composted manure offers slow-release Zn as well as enhancing soil structure. Keep 3-5% organic matter through yearly inoculations. Inoculate your organic matter with microbial inoculants, which will convert mineral-locked Zn into plant-own sector forms. This biological system will keep a natural supply of Zn available.

Use zinc-efficient rotations: in a sensitive corn area utilize a zinc-accumulating sunflower between corn. Follow with legumes that fix nitrogen with no zinc competition. Low doses of zinc sulfate applied at 2 lb/acre at the high-risk crop. This will not deplete zinc and support soil health.

Monitor the effectiveness of prevention with biennial soil testing. DTPA zinc levels should be above 0.8 mg/kg. Evaluate new growth every year to identify early symptoms. Prevention accounts for only 20% of the cost of treatment, but it affords everlasting benefits, document results to improve your strategy every year.

Read the full article: Zinc Deficiency Plants: Symptoms and Solutions