Importance of AMF (Shrub Mycorrhizal Fungi) in agroforestry systems in the province of Los Ríos Arbuscular mycorrhizal fungi (AMF) are soil organisms that are symbiotic with most plants. They offer several advantages that give them an advantage over non-mycorrhizal plants, such as allowing plants to more easily take up nutrients that are not readily available or poorly mobile in the soil, avoiding the effects of pathogenic microorganisms on the roots, and increasing the absorption capacity of the plant, which is not mycorrhizal, in the soil, increasing tolerance to biotic stress conditions, as well as other advantages. The establishment of a symbiotic relationship between fungi and plants leads to a series of recognition activities that lead to morphological and physiological changes in the two interacting organisms. The use of these microorganisms is very important, so it is necessary to know the effect of the physical-chemical conditions of the soil on them to obtain better agricultural benefits. It can be said that the host specificity of AMF is related to the response of AMF to soil conditions and other characteristics, such as plant metabolism, root structure, and fungal ecological tactics. The use of AMF in agriculture can help improve nutrient levels in plants, but monoculture conditions in agroecosystems can lead to a decrease in AMF diversity.Importance of AMF (Shrub Mycorrhizal Fungi) in agroforestry systems in the province of Los Ríos Arbuscular mycorrhizal fungi (AMF) are soil organisms that are symbiotic with most plants. They offer several advantages that give them an advantage over non-mycorrhizal plants, such as allowing plants to more easily take up nutrients that are not readily available or poorly mobile in the soil, avoiding the effects of pathogenic microorganisms on the roots, and increasing the absorption capacity of the plant, which is not mycorrhizal, in the soil, increasing tolerance to biotic stress conditions, as well as other advantages. The establishment of a symbiotic relationship between fungi and plants leads to a series of recognition activities that lead to morphological and physiological changes in the two interacting organisms. The use of these microorganisms is very important, so it is necessary to know the effect of the physical-chemical conditions of the soil on them to obtain better agricultural benefits. It can be said that the host specificity of AMF is related to the response of AMF to soil conditions and other characteristics, such as plant metabolism, root structure, and fungal ecological tactics. The use of AMF in agriculture can help improve nutrient levels in plants, but monoculture conditions in agroecosystems can lead to a decrease in AMF diversity.Importancia de los HMA (Hongos Micorrícicos Arbusticos) en sistemas agroforestales de la provincia de Los Ríos Los hongos micorrícicos arbusculares (HMA) son organismos del suelo que son simbióticos con la mayoría de las plantas. Ofrecen varias ventajas que les otorgan una ventaja sobre las plantas no micorrizas, como permitir que las plantas absorban más fácilmente los nutrientes que no están fácilmente disponibles o tienen poca movilidad en el suelo, evitando los efectos de los microorganismos patógenos en las raíces y aumentando la capacidad de absorción de la planta, que no es micorriza, en el suelo aumentando la tolerancia a condiciones de estrés biótico, así como otras ventajas. El establecimiento de una relación simbiótica entre hongos y plantas conduce a una serie de actividades de reconocimiento que conducen a cambios morfológicos y fisiológicos en los dos organismos que interactúan. El uso de estos microorganismos es muy importante, por lo que es necesario conocer el efecto de las condiciones físico-químicas del suelo sobre los mismos para obtener mejores beneficios agrícolas. Se puede decir que la especificidad del huésped de HMA está relacionada con la respuesta de HMA a las condiciones del suelo y otras características, como el metabolismo de las plantas, la estructura de la raíz y las tácticas ecológicas fúngicas. El uso de HMA en la agricultura puede ayudar a mejorar los niveles de nutrientes en las plantas, pero las condiciones de monocultivo en los agroecosistemas pueden conducir a una disminución de la diversidad de HMA.