In addition to three major elements (nitrogen, phosphorus and potassium, sometimes called "potash"), soils require trace minerals for plant growth as well as human health. They appear only in minute ...

Russian scientists have proved that waste from metallurgical production — blast furnace sludge and converter slag — can be effectively used as fertilizers. According to the research results, the yield ...

Estimates are made of the abundances of some lithophile trace elements, particularly heat-producing elements, in the bulk Earth. The applicability of abundance estimates based on extra-terrestrial ...