Soils contaminated with zinc from mining, refining, or fertilizing with zinc-bearing sludge can contain many grams of zinc for each kilogram of dry soil. Levels of zinc in excessive of 500 ppm in soil interfere with the flexibility of plants to soak up other important metals, such as iron and https://edgarfmpnl.snack-blog.com/28035387/an-unbiased-view-of-zinc-sulfide