Humic & Fulvic Acids – Phenomenal in Their Positive Impact & Contribution to Good Soil Management
Note: The below is an extract from William R. Jackson. PhD. and his book – Humic, Fulvic and Microbial Balance: Organic Soil Conditioning – Chapter 10.
The Balanced Development of Plant Life
Humic and fulvic acids and clay minerals play a very important role in the balanced development of plant life because this combination provides bonding, weathering, etching, dissolving, and desorbing. These processes transform rock-forming minerals into functional plant food. The most plentiful single minerals are silicates or clay, and this abundant component of sedimentary material makes up approximately 40 – 50% of all the minerals available to us. Included in this combination are electrical charges arising from various sources, most specifically aided by fulvic acids and their activities. The cations provided function as bridges between the anionic groups of organic polymers and the mineral surfaces of the clay.
Amino acids are the most abundant form of soil nitrogen, and increase in nitrogen result when amino acids form stable complexes with clay minerals. The secure bonding and tenacious linkage with clay minerals allows the nitrogen to remain available to the soil and thus to the plants. This bonding occurs due to fulvic acids and their variety of reactive abilities and functions. Although humic acid does react with clay minerals while being absorbed on the clay surfaces, the reaction is at a much less rapid rate than that of the fulvic acids. Because of the function of chelation, humic and fulvic acids have a dissolving effect on clay minerals. This reaction occurs as the organic substances weaken the structures of the clay minerals and involves the weathering of rocks.
The positive and negative dipole charges provided by the fulvic acid activity on the clay minerals allow the electrolyte to penetrate the tight clay layers and reduce the compaction of the clay. Thus fulvic acid improves the growth potential within the collection of soil particles; the soils permeability is increased; while crust and clods are broken down; crumbling, general porosity, and tillage are improved; water retaining capacity is increased; absorption characteristics are improved; hard pan is degraded; and cation exchange reactions are increased. Humic and fulvic substances are phenomenal in their positive impact on clay minerals and in their contribution to good soil management.