**Author details**

*Mycorrhizal Fungi - Utilization in Agriculture and Forestry*

in a given host plant [70].

colonisation.

ised plants.

**5. Conclusions**

host plant, the substrate and the introduced microorganisms.

between 4% (*C. arabica*) and 28% (*T. donnell-smithii*), in contrast with *R. intraradices,* the lowest value was also with *C. arabica* (18%) and the highest of 63, 57, 61 and 53% in *T. donnell-smithii*, *C. canephora*, *L. leucocephala* and *C. odorata,* respectively. The radical colonisation in the controls confirms the presence of other endomycorrhizal fungi in the soils used, as part of the regional microbiota, but with less capacity to stimulate growth. Even though it has been indicated that the symbiosis lacks taxonomic specificity [70], there is a certain functional compatibility with the

On the other hand, in biofertilised species, the speed of colonisation of *R. intraradices* is expressed as it has happened also in other annual and perennial crops [71] and consequently the photosynthetic activity increases after colonisation [20]. This fact suggests that the increase in the development of the host plant may be due to a greater capacity to absorb nutrients [32]. By introducing endomycorrhizal fungi attached to the seed, they have a greater chance of colonisation when the radicle emerges, unlike the fungi present in the substrate that may not be in the same proximity to the root system. However, it is expected that the symbiosis differs in the levels of colonisation [20] due to the interaction of environmental and management factors [2]. There are combinations of microorganisms that work best

At the end of the evaluation (140 days) the percentage of colonisation in the control was 44% and in the treatment with *R. intraradices*, the average was 57%. The degree of benefit of the symbiosis may not be related to the percentage of

The biofertilisation of tropical plants with *R. intraradices* favours the plant growth by increasing dry weight and the assignment of dry matter of the morphological and physiological components and the induction of growth is differential in time with respect to the organs evaluated, in some cases, it promotes greater aerial

There are different periods in the vegetative growth of plants. At the beginning of the 28 to 56 days, the nutritional benefits are expressed by means of the increase in growth followed by a period of diminution and to continue in the following ones

The content of nutrients such as phosphorus was always higher in the biofertil-

and radical growth and in others, it decreases the root system.

with the increase in biomass accumulation.

**120**

Juan Francisco Aguirre-Medina1 \*, Jorge Cadena-Iñigue2 and Juan Francisco Aguirre-Caden1

1 Autonomous University of Chiapas, Tapachula, Chiapas, Mexico

2 Postgraduate College, Texcoco, Mexico State, Mexico

\*Address all correspondence to: juanf56@prodigy.net.mx

© 2020 The Author(s). Licensee IntechOpen. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/ by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
