Salts are natural components of soil, surface, and groundwater. They are ionic mineral compounds, which means they bonded by electrostatic attractions between cations (+ charge) and anions (- charge).

Before a nutrient can be used by plants it must be dissolved in the soil solution. Most minerals and nutrients are more soluble or available in acid soils than in neutral or slightly alkaline soils.

Crop fertilizers are a major source of pollution, as the chemicals make their way out of the soil and into the natural ...

A new study reveals the positive impact of intercropping leguminous plants like soybean and Chinese milkvetch with tea crops.