EndosporSummary | Technology | Benefits | Application | Ingredients | Storage | Compatibility

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Symbiosis between a fungus and the root of a plant. The plants contribute carbohydrates that are indispensable to the survival of the fungus whereas the fungus channels soil nutrients to the roots and aids the plant in obtaining water.

An endomycorrhizal fungus forms hyphae that penetrate the cells of plant roots where they form balloon-like vesicles and branch out manifold to develop big surface areas dedicated to the exchange of minerals and carbohydrates. These structures gave rise to the name "arbuscular mycorrhizae" or AM (formerly known as "vesicular-arbuscular mycorrhizae"). Usually, an endomycorrhizal root cannot be easily distinguished from a nonmycorrhizal root without the help of a microscope and special dying techniques.

TNI’s mycorrhizal inoculants are formulated for spraying germination trays, for the coating of cereal seeds and as supplements for transplants. They are easily applied through irrigation systems or as spray applications. The products contain fungal strains that readily form endomycorrhizal associations with a wide range of plant species. They are combined with Trichoderma, beneficial bacteria and bioestimulants, such as humic acids, soluble kelp and yucca extracts and organic soil conditioners to boost fast root growth. The results are higher survival and growth rates and less need for watering.

The way mycorrhizae work
Some plants cannot survive without the presence of mycorrhizal fungi in their root system. Most plant species can live without mycorrhizae but thrive much better when the fungus is present. Very few species do not need the symbiosis or will not even become mycorrhizal, such as most members of the brassica family (cauliflower, broccoli, cabbage). Mycorrhizal fungi explore the soil through hyphae that act as their "roots". They are extremely thin and penetrate in fissures and microscopic soil cavities where they find minerals that the plant has not been able to access or make use of. With the help of rhizobacteria the mycorrhizae solubilize these nutrients and channel them to the plant´s root system.

The plant provides the fungus with a source of carbohydrates, such as sucrose and glucose produced by the plant in photosynthesis. If some external factor diminishes this source the mycorrhizal fungus becomes more active and aggressive in the quest for nutrients in the soil. This is the reason why the plant benefits especially when exposed to environmental stress. Whatever problem the plant faces - drought, heat, high degrees of salinity, wind, fire, frost, parasites or other pathogens - mycorrhizae have evolved to mitigate these adverse conditions. The mycorrhizal association is a natural phenomenon that plants have benefited from for over 400 millon years.

The importance of Inoculation
This important part of a plant’s absorption system has been ignored almost completely by traditional agriculture and tree nurseries. In the past little attention has been paid to the topic of mycorrhizae in agriculture at university level and in technical schools but this has changed rapidly over the last decade. Commercially speaking, we have focused on quantity instead of quality. Forestry nurseries and providers of germinated vegetable plants have neglected the natural state of the plants they produce because of pressures to churn out large quantities of plants at low cost. These plants are not completely fit to withstand the adverse conditions they encounter after transplant. Nonmycorrhizal plants are almost always more fragile and can die if they are not constantly maintained under intensive care.

The environmental conditions in an agricultural monoculture or commercial forestry plantations are not optimal. Frequently, the transplant causes a major trauma for seedlings and young plants. Normally, there is a lack of water, but there are many additional factors that can pose an important source of stress, such as heat, an inopportune moment in the season for transplant and adverse soil conditions. Mycorrhizal roots establish themselves faster and their nutrient uptake is more complete. Moreover, the microbial activity in the soil requires more attention. When microorganisms are not at equilibrium the natural minerals present in the soil cannot be used.

If all conditions were optimal there would be no risk at transplant and one would not have to worry about inoculation. But generally, the conditions are not ideal and some kind of help would be welcome. Inoculation can make a significant difference, especially under adverse conditions. 

Summary | Technology | Benefits | Application | Ingredients | Storage | Compatibility

Package sizes | MSDS | Spec sheet

Biofungicide/fertilizer Soil

Trichoderma and beneficial bacteria control pathogenic fungi that cause root rot, such as Pythium, Fusarium, Phytophthora, Rhizoctonia and Verticillium. These organisms are combined with beneficial bacteria that stimulate root growth and fertilize the soil biologically.

Bactiva NP is a biofungicide that prevents root rot caused by pathogenic fungi, such as Pythium, Fusarium, Phytophthora, Rhizoctonia and Verticillium. The product contains Bacillus subtilis and several species of the beneficial fungus Trichoderma (T. harzianum, T. viride, T. reesei and Gliocladium virens) that compete with pathogenic fungi for space and nutrients in the rhizosphere, they act as their parasites, and produce toxins that prevent their growth. The product is applied at periodic intervals and especially at moments of increased risk of damping-off.

Bactiva NP is also a microbial biofertilizer as it contains nitrogen fixing and phosphorous solubilizing bacteria. The bacteria fix or set free elements that are present in the soil but are inaccessible to plants. It is recommended to use the product in combination with a source of organic matter, such as compost tea, which constitutes the nutrient base for the microorganisms together with a reduced chemical fertilizer input that contains micro and macro elements. The aim is to maximize fertilizer uptake by the plant which in turns allows for a reduction in fertilizer input and costs. The efficiency of the combination can be enhanced further by varying the intervals and doses of the applications of chemical fertilizer, organic matter and microorganisms throughout the crop cycle according to the measurements of changes in soil acidity and conductivity.

Bactiva NP acts as a biological rooting agent for its high number of plant growth promoting rhizobacteria (PGPR) that exude growth hormones (gibberellins, cytokinins), such as Bacillus megaterium y Pseudomonas fluorescens. These bacteria and the various Trichoderma species stimulate a vigorous growth of the root system at germination stage. The product is blended into the substrate and subsequently sprayed at maximum intervals of two weeks. Bactiva NP  is also successfully used in the regeneration of roots suffering from substantial losses and open wounds during transplant.

Finally, the product contains biostimulants that promote the biological activity of the soil. In combination with the microbial ingredients they increase cell proliferation, boost growth of lateral buds and slow the aging process of plant tissues.