HUMIC SUBSTANCES 2

WHAT THEY ARE, AND CAN DO

Humic substance is the end product of decayed matter, and usually contains large quantities of trace minerals. It contains up to 5,000 calories per gram, providing energy that can be used for plant growth.

  • Humates (metal complexes of humic acid) supply growing plants with food. They also make soil more fertile and productive.
  • Humic substance increases the water holding capacity of soil; therefore, it helps plants resist roughts and produces better crops in reduced water conditions.
  • Humic substance breaks up unproductive clay soils, turning them into profitable soils.
  • Humic substance helps retain water soluble inorganic fertilizers, releases them, as needed, to the growing plants, and helps prevent soil leaching.
  • Humic acid stimulates seed germination and viability, and root respiration, formation and growth.
  • Humic acid reduces other fertilizer requirements and increases yield in crops such as potatoes, wheat, tomatoes, corn, beets, etc.
  • Humic substance fosters improved drainage by increasing the porosity of dirt.
  • Humic substance increases aeration by increasing the porosity of dirt.
  • Humic acids increase the protein and mineral contents of most crops.
  • Humates establish a desirable environment for microorganism development.
  • Humic substances produce thicker, greener, and healthier crops.

Effects on Soil Fertility.

Native soil humic substances enhance plant growth both directly and indirectly. Physically, they promote good soil structure and increase the water holding capacity of the soil. Biologically, they affect the activities of microorganisms. Chemically, they serve as an adsorption and retention complex for inorganic plant nutrients. Nutritionally, they are sources of nitrogen, phosphorus, and sulphur for plants and microorganisms. All of these effects increase the productivity of the soil.

Effects on Plants.

Humic acids can have a direct positive effect on plant growth in a number of ways. Both plant root and top growth have been stimulated by humates, but the effect is usually more prominent in the roots. A proliferation in root growth, resulting in an increased efficiency of the root system, is a likely cause of higher plant yields seen in response to humic acid treatment.

Humic matter has been shown to increase the uptake of nitrogen by plants, and to increase soil nitrogen utilization efficiency. It can also enhance the uptake of potassium, calcium, magnesium and phosphorus. Humic and fulvic acids are soluble in water and make available to plants, nutrients and trace minerals that would be otherwise unavailable.

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What is a chelate?

Chelates are organic molecules that can trap or encapsulate certain highly reactive trace metal cations which prevent them from entering into unwanted chemical reactions and forming insoluble compounds, which are unavailable.

Chelates incorporate metal ions into a soluble but bound form, to make them available to the plant because they are very soluble in water. Chelation is bonding the metal ion to an organic molecule, making the metal ion highly soluble.

A chelated form of a mineral has different qualities from the mineral itself. One quality that can change is bioavailability; the ability to absorb and use the mineral. Bioavailability can be increased or decreased depending on the mineral-chelate complex formed.

Some synthetic metal-chelate complexes form extremely strong bonds and bind minerals so tightly that they are unavailable for their physiological functions, and if used in foliar fertilizer has a great deal of trouble releasing the metal ion once in the plant.

Metal-chelate complexes used in foliar fertilizers need to form bonds strong enough to protect them from unwanted chemical reactions but once in, the plant should release easily.

Natural chelating agents do not share the problems of the synthetics and are state-of-the-art technology for delivering selected mineral and trace elements with maximum bioavailability, tolerability and safety.

If a yield-limiting deficit is suspected or established then the chelated mineral applied as a foliar will address that deficit more accurately and with greater speed than any other nutrient.

These elements are far more easily absorbed by plant roots and leaves in this chelated form because of changes in the electrical charge from the trace minerals as a result of their organic encapsulation.

The chelation process removes the positive charge from the metals, allowing the neutral or slightly negatively charged, chelated molecule to slide through the pores on the leaf and root surface more rapidly.

These pores are negatively charged, so there is a problem with fixation of positively charged minerals at the pore entrance without chelation. There is no such restrictive barrier for the neutral, chelated mineral.

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COMPOST CONTAINMENTS
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COMPOST PILES
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