Resumo

ROMERO-ARIAS, Aracelis et al. Influence of mycorrhizal strains on height and diameter of Glycine max (L.) Merr. Pastos y Forrajes [online]. 2024, vol.47  Epub 27-Dez-2024. ISSN 2078-8452.

Objective: To evaluate the effectiveness of the application of three strains of arbuscular mycorrhizal fungi (AMF) on the morphophysiological development of Glycine max (L.) Merr. cultivar Incasoy 27 in a typical reddish Brown Fersiallitic soil in the Amancio Rodriguez municipality, Las Tunas province, Cuba.

Materials and Methods: On a typical reddish Brown Fersiallitic soil, an experiment was carried out under field conditions. The research was developed in the period from September to December, 2020. A randomized block design with five treatments and four replicas was used to set up the experiment. The treatments were: absolute control, NPK and mycorrhizal strains INCAM 4, INCAM 11 and INCAM 2. Plant height and stem diameter were evaluated during the vegetative cycle of the crop.

Results: There were significant differences between treatments for the variable stem diameter. The G. max plants with the highest diameters corresponded to the treatments with NPK fertilization and with the mycorrhizal strain INCAM 11, with no significant differences between them, and with average diameters above 4 cm. The highest confidence intervals between the comparisons of the treatments appeared when comparing the control with regards to the treatment INCAM 11. For the variable stem diameter, the confidence intervals at 60 days after germination (DAG) for each of the treatments widened with respect to the intervals in the evaluations carried out at 30 DAG. This showed increased phenotypic variability of that trait in the plants of each of the treatments at that crop age.

Conclusions: The application of arbuscular mycorrhizogenic fungal strains positively influenced the morpho-physiological indicators evaluated in G. max, which allows to decrease the use of mineral fertilizers in this crop.

Palavras-chave : Glycine max; inoculation; mycorrhizae.

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