For nearly a month, hundreds of thousands of Iowans have not been allowed to water their lawns—even though there's no drought ...

While Iowa's problems are uniquely severe, nitrate levels are a rising concern in other regions, from California to the Chesapeake Bay.

This paper gives the technology and applications on multi-rate receiving ability of 50G-PON upstream. The progress of ITU - T standardization is presented. The technical feasibility is analyzed.

The handwritten message to Powell, scrawled in Sharpie across an image comparing global interest rates, was unmistakably direct. “Jerome – You are, as usual, ‘too late.’ You have cost the USA A ...

The application of B rates and gypsum did not result in any discernible effects on soil P levels (Figure 4A and B). They remained above the critical level of 6 mg dm –3 for Paraná state (SBCS/NEPAR, ...

In the process of crop growth, irrational fertilizer application methods have caused waste of fertilizer resources and water, as well as damaged the soil’s structure. To puzzle the above problems out, ...