l), our knowledge of the turn-over of forest soil humus is very incomplete. This is particularly true of the organic matter in soil horizons below the humus layer.

G. V. Jacks, deputy-director of the Imperial Bureau of Soil Science, Rothamsted, delivered a lecture on February 12 to the Royal Society of Arts, in which he dealt with the origin of humus ...

Therefore, the stability of boreal soils is critical to understanding global carbon cycle feedbacks to climate change and ...

Learn More › With more than a thousand varieties in a wide range of sizes, shapes, and colors, it’s no wonder tomatoes are among the most popular of all backyard-grown produce. As soon as the ...

Burnt soil has obviously lost any mulch that had been present as well as the layer of decomposing organic material or humus just below it. Microbial soil life, from aerobic bacteria to symbiotic ...