HUMIC ACIDs AND THEIR INFLUENCE ON SOIL FERTILITY
Humic Acids are a good source of energy for beneficial soil organisms. Humic substances and non humic (organic) compounds provide the energy and many of the mineral requirements for soil microorganisms and soil animals.
Beneficial soil organisms lack the photosynthetic apparatus to capture energy from the sun thus must survive on residual carbon containing substances on or in the soil. Energy stored within the carbon bonds functions to provide energy for various metabolic reactions within these organisms. Beneficial soil organisms (algae, yeasts, bacteria, fungi nematodes, mycorrhizae, and small animals) perform many beneficial functions which influence soil fertility and plant health. For example the bacteria release organic acids which aid in the solubilization of mineral elements bound in soil.
HUMIC ACIDS AND THEIR INFLUENCE ON PLANT GROWTH AND DEVELOPMENT
Plant grow is influenced indirectly and directly by humic Acids. Positive correlations between the humus content of the soil, plant yields and product quality have been published in many different scientific journals. Indirect effects,previously discussed, are those factors which provide energy for the beneficial organisms within the soil, influence the soil’s water holding capacity, influence the soil’s structure, release of plant nutrients from soft minerals, increased availability of trace minerals, and in general improved soil fertility. Direct effects include those changes in plant metabolism that occur following the uptake of organic macromolecules, such as humic acids, fulvic acids. Once these compounds enter plant cells several biochemical changes occur in membranes and various cytoplasmic components of plant cells.
Builds a stronger root system by increasing root respiration and root formation.
Increases the Cation Exchange Capacity of the soil and facilitates nutrient absorption
Great source of energy for beneficial soil organisms, which influence both soil fertility and plant health.
Improves aeration of soil and water retention in heavy and compact soils.
Prevents water and nutrient losses in light sandy soils. ss
Healthier roots hold soil, minimizing erosions
When added directly to soil it improves its quality and ability to grow crops
When added to urea, fertiliser and lime it improves their performance
When added to seeds it improves their strike rate and encourages root growth