BIOFERTILISATION (BIOFERTILIZERS WITH RIZOBACTERIES PGPR) – UREA BIO-FACTORY 

   

     The use of rhizosphere microorganisms for plant fertilization becomes the ideal tool for the agricultor who wants more sustainable practices. Biofertilizers based on fungi and bacteria act at ground level by acting as miniature nutrient plants. They fix atmospheric nitrogen (as does Rizobium in legumes), solubilize phosphorus, mobilize potassium and other microelements (iron, manganese, zinc, etc.). Similarly, scientific studies prove that the use of bacteria is beneficial for soils and crops.

    RHIZOBACTERIES: The PGPR rhizobacteria of the FullSoil® technology colonize the root and its zone of influence (rhizospheric soil). Beneficial rhizobacteria, commonly known by the acronym PGPR (Plant Growth Promoting Rhizobacteria), fulfill key functions for the plant such as:

biofertilizers

Stimulation of seed germination and rooting.

Phytostimulators.

Improvement of the soil structure

All this with the benefits of mycorrhizae, gives birth to FullSoil® Technology

FullSoil Technology FullSoil Technology
Biofertilisation on almonds Biofertilisation on almonds

The mechanisms of action of PGPR can be classified as Direct and Indirect.

 

     1) DIRECT MECHANISMS: Bacteria provide certain compounds to the plant or facilitate the assimilation of soluble nutrients from the soil.

  • Nitrogen fixation
  • Solubilization of phosphates.
  • Production of plant growth regulators such as auxins, gibberellins and cytokinins.
  • Inhibition of the synthesis of ethylene. Increased permeability of the roots.

 

     2) INDIRECT MECHANISMS: Bacteria also produce substances that can mobilize amino acids, siderophores or organic acids that release phosphorus, iron and / or aluminum.

  • They influence the production of phytoalexins (compounds used by the plant as a defense) as a response induced by the polysaccharides produced by bacteria around the roots.
  • Production of antibiotics and hydrogen cyanide which produce a decrease in the phytopathogenic population.
  • Hydrolysis of molecules produced by pathogens such as fusaric acid to release 1-3-glucanase inhibiting the fungal wall development of fungi such as Phytium ultimun and Rhizoctonia solani.

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