While the magnitude of herbicide usage is well-documented for croplands, this new study is the first to reveal the amount of herbicides sprayed on wildlands

Researchers are trying to better understand how several kinds of interactions affect phosphorus mobility in agricultural soils and streams

With the move from burning coal to natural gas and low-sulfur coal and an increase in the use of scrubbers, only about 25 percent as much atmospheric sulfur is available today, compared to 40 years ago

Study is first to show how to mobilize native phosphorus in the soil using zinc oxide nanoparticles over the life cycle of the plant, from seed to harvest

“In some parts of the tropics, for every ton of phosphorus harvested in food, you have to donate one ton to the soil.” 

ASU part of research that finds massive phosphorus buildup in landscape

Microbiologists unravel relationship among plants, mycorrhizal fungi

Research shows nitrogen is accumulating in soil–creating health risks like “blue baby syndrome” and environmental dead zones in rivers and oceans

Before industrial nitrogen fertilizer production (from fossil fuels), red clover and other legume crops were essential in crop rotation, improving soil fertility

With a group of fertilizers known as chelates, zinc levels can be managed in pecan trees–and that's good news for Arizona growers