Farmers typically get the sludge for free, saving them hundreds of dollars per acre over synthetic fertilizer, said Brian Arnall, a professor of plant and soil sciences at Oklahoma State University.

West Virginia became the first state in the US this week to ban seven synthetic dyes in all food and beverages sold in the state. The ban also targets two food preservatives—butylated ...

The Food and Agriculture Organization (FAO) reports that global demand for nitrogen-based fertilizers grows by 1% annually—an increase of approximately 1.074 million tons each year. Currently, the ...

The NPK is an important synthetic fertilizer that contains nitrogen, phosphorus, and potassium, largely used in Kenya on different crops, including tea estates, to replenish nutrients lost through ...

Farmers typically get the sludge for free, saving them hundreds of dollars per acre over synthetic fertilizer, said Brian Arnall, a professor of plant and soil sciences at Oklahoma State University. A ...