This type of soil contains at least 25 percent clay and is particularly good at holding nutrients due to the microscopic structure of each clay particle, explains Anton Ledin, the in-house plant ...

A team of agronomists and biotechnicians at China Agricultural University has found that adding bacteria to simulated lunar regolith increased the amount of phosphate in the soil for use by plants ...

Some of the globe's richest soil -- known as terra preta, or Amazonian dark earths -- can transform poor soil into highly fertile ground. Because terra preta is loaded with so-called bio-char ...

One third of the cropland in the upper Midwest has entirely lost its fertile topsoil, according to a new study. Other scientists doubt that figure, but agree that soil loss is a big problem.

By Dan Charles Feb 24, 2021 8:08am (Morning Edition / NPR) Soil on hilltops in this photo is lighter in color, revealing a loss of fertile topsoil. Image: Evan Thaler for NPR ...