Fulvic acid has both direct and indirect effects on plant growth. Indirect effects comprise of the factors that; make available energy for use by organisms in the soil, influence water retention, improve soil structure, avail trace elements to the plants and influence soil fertility. Direct effects comprise of the changes in plant metabolism that take place after the application of fulvic acid and humic acids (Smith, 2017).
Fulvic acid help mediate the uptake of essential mineral elements contributing to improved plant growth. One stimulating influence of fulvic and humic acid on plant growth is the absorption of mineral elements such as nitrogen, potassium and phosphorus. The small size of fulvic acid molecules enables plants to readily uptake nutrients. Also, fulvic acids act as chelators preventing different nutrients from reacting with each other before plants can uptake them increasing the ability of plants to take up nutrients for better growth. This effect enables plants to absorb different nutrients more efficiently, therefore, facilitating stronger growth.
The uptake of fulvic and humic substances has a positive impact on seed germination. The application of fulvic acid improves seed germination rates. When fulvic acid enters the seed cells, there is an increase in cell division and respiration rates. The increase in respiration rate plays a crucial role in root meristem development and helps activate several growing points in the seedlings.
Fulvic acid has a significant impact on root initiation and improved root development. Fulvic acid acts as a root stimulator. Accordingly, there is further stimulation of root growth when fulvic acid is applied together with humic acid (Smith, 2017). The small molecules of fulvic acid play a significant role in root stimulation. Nevertheless, fulvic and humic acid provides plant cells with free radicals which act as electron donors. Free radicals have positive impacts on seed germination, root development and the overall plant growth.
When applied together with trace elements and foliar sprays, fulvic acid helps increase the growth of plant foliage, fruits and roots. An increase in plant growth positively impacts processes in the leaves and the stem, therefore, increasing the carbohydrate content stored in these parts. Fulvic acid enhances the metabolic processes and the carbohydrate production. Thus, there is an increase in the overall plant yields and brix levels. As so, higher brix levels in cannabis plants will directly lead to stronger resilience against pests and diseases, increased resin and oil production, as well as increased terpene production.
Fulvic acid plays a vital role in the uptake of iron. Fulvic acid prevents iron from being oxidized and turning into rust by keeping it in soluble form. Fulvic acid also enables plant membranes to easily absorb iron (Bocanegra, Lobartini, & Orioli, 2006). Iron acts as a catalyst, as the plant takes up more iron, it increases its green pigment that absorbs light to manufacture sugars. These sugars provide energy for plant growth and also act as food stores. Hence, increased food stores contribute to an increase in crop yields.
Fulvic and humic acid directly impact the plant cell membranes. Fulvic acid increases permeability causing improvement in the transportation of minerals to plant parts of metabolic need. Moreover, fulvic acid accelerates the chlorophyll content in the leaves. An increase in the chlorophyll content in the leaves has a direct impact on the uptake of oxygen. Fulvic acid also elevates the concentration of messenger ribonucleic acid which is beneficial for their effect on the biochemical processes in plant cells. Increase in biochemical processes causes increased enzyme synthesis and protein content.
Ultimately, fulvic acid acts as a protector of plants against stress. Stress in plants can be a significant contributor to reduced yields. Fulvic and humic acid enable a plant to produce a protective agent called superoxide dismutase (SOD). SOD helps sponge the free radicals and shields chloroplasts and cell membranes. Increased SOD levels guard plants against stress resulting from drought (Anjum, Wang, Farooq, Xue, & Ali, 2011). Hence, at such adverse conditions, crops can maintain their yields.
Indeed, fulvic acid plays a crucial role in improving plant growth and yields. The role of fulvic acid in enhancing plant growth and yields is clear, which is why we strongly advise at incorporating some type of fulvic/humic in your regiment. If you're having trouble deciding on a fulvic/humic product, then it's the perfect time to try FulBase our carbohydrate derived fulvic acid/humic acid product into your gardens. If you're looking for something in powder form, then MycoRhize our 12 fungi species blended with humic and algae extracts is also another great add-on to any regiment. Use any of these products and experience the improvement in your crop growth and yields!
Anjum, S. A., Wang, L., Farooq, M., Xue, L., & Ali, S. (2011). Fulvic Acid Application Improves the Maize Performance under Well-watered and Drought Conditions. Journal Of Agronomy & Crop Science, 197(6), 409-417. doi:10.1111/j.1439-037X.2011.00483.x
Bocanegra, M. P., Lobartini, J. C., & Orioli, G. A. (2006). Plant Uptake of Iron Chelated by Humic Acid of Different Molecular Weights. Communications In Soil Science & Plant Analysis, 37(1/2), 239-248. doi:10.1080/00103620500408779
Smith, H. (2017). Humic or Fulvic Acid: What Kind are Your Plants On?. Maximumyield.com. Retrieved 12 October 2017, from https://www.maximumyield.com/humic-or-fulvic-acid-what-kind-are-your-plants-on/2/1352