Objective

To evaluate the effectiveness of three Bradyrhizobium strains in the morphoagronomic development of Glicine max L, cultivar Incasoy 27, in the Puerto Padre municipality.

Materials and Methods

A study was conducted under field conditions, on a reddish Brown Fersialitic Soil of the Puerto Padre municipality, Las Tunas, Cuba. A randomized block design was applied with five treatments (absolute control, fertilization with NPK and the Bradyrhizobium strains, ICA 8001, USDA 110 and GIE 109) and four replicas. The distance between replicas was 1 m and the seed had 98 % germination. During the cultivation cycle, the number of pods per plant, number of grains per pod, weight of 100 grains, yield in t ha-1 were evaluated and an economic assessment was made.

Results

The lowest number of pods per plant was obtained in the absolute control, without differing from the treatment with NPK. In turn, both differed statistically (p > 0,05) from the treatments with Bradyrhizobium. The number of grains per pods was also higher in the inoculated treatments, which differed significantly from the control. The highest grain yield was obtained in the inoculated plants, with values between 1,06 and 1,23 t ha-1.

Conclusions

The application of Bradyrhizobium strains positively influenced the morphoagronomic indicators of the crop, which allows to decrease the use of mineral fertilizers.

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