Foliage of several crop species, coniferous trees, and hardwood trees was collected annually from 1972 to 1987 at various distances and directions from a complex of coal-burning power plants in southwestern Pennsylvania. Mean sulfur levels varied with time, as well as with distance and direction of the collection sites from the nearest respective major power plant. The highest mean foliar sulfur contents were well below the levels at which nutrient imbalances within plants occur.
All Science Journal Classification (ASJC) codes
- Environmental Engineering
- Environmental Science(all)
- Earth and Planetary Sciences(all)