Perspective -- Geologic time : The quaternary period ; Archeology ; Estimating geologic time ; Early estimates of geologic time -- Weathering and erosion : Structure of the rocks ; Structure in ...

Abstract: Rational management of nitrogen (N), phosphorus (P), and potassium (K) is critical for tobacco production, while excessive fertilization wastes resources and harms the environment.

Soil microbiology is the scientific discipline that is concerned with the study of all biological aspects of the microorganisms (bacteria, archaea, viruses, fungi, parasites and protozoa) that exist ...