Objective

: To evaluate the effectiveness of the application of three strains of arbuscular mycorrhizal fungi on the yield of Glycine max L., cultivar Incasoy 27, on a reddish brown fersialitic soil, typical of Las Tunas province.

Materials and Methods

: The research was conducted under field conditions, from September to December, 2018. For setting up the experiment a randomized block design was used, with five treatments and four replicas. The distance between replicas was 1 m. The seed used was from INCA, with 98 % germination. Five treatments were established: an absolute control, fertilization with NPK and inoculation with mycorrhizal strains INCAM4, INCAM11 and INCAM2. During the crop cycle the variables number of pods per plant, number of grains per plant, weight of 100 grains, yield in t ha-1, were evaluated.

Results

: It was observed that the lower number of pods per plant corresponded to the control treatment, which differed from the others (p < 0,05). The highest values were recorded in the inoculated treatments, which did not differ among them (51,4; 60,0 and 62,2 for INCAM 4, INCAM 11 and INCAM 2, respectively). Regarding yield, the best results were obtained in the treatment fertilized with NPK and the inoculation with mycorrhizae, with values of 2,0; 2,5; 2,7 and 2,6 for NPK, INCAM 4, INCAM 11 and INCAM 2, respectively. All the treatments were economically profitable. The inoculated ones stood out.

Conclusions

: The application of arbuscular mycorrhizal fungi strains influenced positively the morphoagronomic indicators evaluated in G. max, which allows to decrease the use of mineral fertilizers in this crop.

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