There are two main groups of bacteria that promote plant growth: nitrogen fixing bacteria and phosphate solubilizing bacteria. Nitrogen fixing bacteria live in symbiotic relationships with legumes (such as peas) and other plants. They convert atmospheric nitrogen into ammonia, which is then absorbed by the roots of the plant. Phosphate solubilizing bacteria break down insoluble phosphates into soluble phosphates, which are available to plants.
These beneficial bacteria can be used to promote plant health. For instance, when applied to soil, these bacteria can help prevent diseases such as root rot and powdery mildew. Additionally, some strains of bacteria can produce antibiotics that inhibit harmful pathogens.
There are many different types of fungi that can be added to your garden to improve its health. One type of fungus called Trichoderma harzianum has been shown to reduce the incidence of fungal diseases in crops. This particular strain of fungus produces an enzyme that breaks down certain compounds found in the cell walls of pathogenic fungi.
Another way to use beneficial fungi to promote plant growth is by adding them directly to the soil. These fungi will colonize the roots of plants and help them absorb nutrients more efficiently. They also produce enzymes that break down organic matter in the soil, making it easier for other organisms to access these nutrients.
There are several different kinds of yeast used to promote plant growth. One type of yeast called Saccharomyces cerevisiae (S. cerevisiae) has been shown to improve plant growth when added to the soil. This kind of yeast produces an enzyme called 1-aminocyclopropane-1-carboxylate deaminase (ACD), which helps plants make amino acids.
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