Effect of a systemic fungicide on the establishment of Arbuscular Mycorrhizogenic Fungi in maize (Zea mays L.)
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Abstract
Fungicides not only affect the pathogens fungi, but also to others, including those that are beneficial for plant growth, such as arbuscular mycorrhizal fungi. The aim of the present work was to evaluate the effect of a commercial systemic fungicide on the colonization of arbuscular mycorrhizal fungi, inoculated in corn crop, under semi-controlled conditions. Corn plants were inoculated with strains Rhizophagus irregularis INCAM 11, Glomus cubense INCAM 4 and with a conglomerate of different species of arbuscular mycorrhizal fungi, with and without of a systemic fungicide. Colonization frequency and visual density of mycorrhizal fungi were determined at 54 days after inoculation. In addition, the root length, total fresh weight and total dry weight of corn plants were determined. The conglomerate of different species of arbuscular mycorrhizal fungi with fungicide had the highest visual density. The presence of the fungicide increased the root length, total fresh weight and total dry weight of the control plants and those inoculated with Glomus cubense INCAM 4. The effect of strain Rhizophagus irregularis INCAM 11 on the corn growth was not affected for systemic fungicide.
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