Humic acid plays a crucial role in soil health and plant nutrition. As a key component of organic matter, it enhances soil ...

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 ...

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.

producing an acid humus. The acidic conditions are not liked by soil organisms which would normally merge the boundaries of the horizons.