Plants can be inoculated with the beneficial fungi at the time of sowing or transplanting, but also at later stages, even as mature trees. Mycorrhizae also act as a network of fine threads (hyphae) between the roots of different individuals. Put very simply, mycorrhizal fungi (or mycorrhizae) are mostly mutualistic fungi which associate with plant roots, helping the plant get more nutrients and be more resistant overall. A well chosen bacterial agent will lead potentially harmful competitors to starve, diminishing risks of these giving rise to plant infection. Insertion of bacteria in the soil will create competition for resources within the existing bacterial population. This is often resulting in greater and deeper root ball growth, better extension of cells and plant vigour. Some bacteria can also synthesize certain growth hormones which the root system can benefit from. Plants naturally create growth hormones that will either facilitate or modify development. Promoting plant growth through phytohormones production They facilitate extraction, transport or solubilization of nutrients to the root system.
Bacteria create or extend the plant’s nutrient capture tools. The aim of bacterial stimulation is to make these elements bio-available to plants. Plants require to be provided with a broad range of soil-sourced nutrients (among others: iron, nitrogen, potassium and phosphorus, as well as microelements such as lithium, zink, copper, borium etc). The beneficial effect of these bacteria can be threefold:Įnhancing and extending soil nutrient capture capabilities Whenever we talk about bacterial plant biostimulants, we’re usually talking about Plant Growth-Promoting Rhizobacteria (PGPR), which promote plant growth by enhancing the rhizosphere activity (and in case you’re wondering, the “rhizosphere” is the narrow region of soil or substrate that is directly influenced by root secretions and associated soil microorganisms).
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