Researchers in China have discovered that a combination of bone biochar and humic acid can dramatically improve coastal saline soils and help olive trees thrive in these challenging environments. The ...

For iced tea, the question is “sweet or unsweet?” For garden soil, it’s “alkaline or acid?” The answer can make a big difference in the health and growth of your plants, according to Sharon Yiesla, ...

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 ...