A KNOWLEDGE of the speeds at which ions diffuse in soils is of both basic and agronomic importance, but the development of accurate methods for the measurement of diffusion coefficients has ...

Soil pH or soil reaction is an indication of the acidity or alkalinity of soil and is measured in pH units. Soil pH is defined as the negative logarithm of the hydrogen ion concentration. The pH scale ...

Soils can be thought of as storehouses for plant nutrients. Many nutrients, such as calcium and magnesium, may be supplied to plants solely from reserves held in the soil. Others like potassium are ...

Soil water is thus a critical resource that lays ... a reaction of molecules of the same substance that produces ions. For water, this is the reaction of water to produce protons and hydroxide ...

Aluminum stress is an important factor limiting plant growth in acidic soil, and has significant effects on the growth, development and physiological metabolism of Mentha canadensis. However, the ...