Soils have a natural characteristic called the cation exchange capacity (CEC) that allows them to hold (and exchange) cations (e.g., Ca+2 or Na+). These cations are held tight enough on the CEC that ...

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

Since the alfalfa in the rest of the field didn’t show any signs of potassium deficiency, I suggested that the farmer take a composite soil sample from just the high areas, which represented about one ...

Take a look out at this landscape. What do you notice? Credit: Shutterstock Take a walk outside. Get some fresh air. What do you notice around you? Buildings, trees, and the sky may be on your list, ...

Scientists have uncovered how different types of biochar influence the movement of water in agricultural soils that contain excessive phosphorus, offering new insights into how farmers can reduce ...