Effect of the applications of a biological formulation (Azotobacter salinestris, Bacillus amyloliquefaciens, Rhizophagus intraradices) on the yield of Allium cepa ‘Century’

E. Mamani; M. Acosta; M. Gonzales

doi:10.21704/pja.v3i3.1339

Authors

E. Mamani Ing. Agrónomo. Facultad de Agronomía–Universidad Nacional San Agustín de Arequipa (UNSA)
M. Acosta Gerente General de la Empresa NOVAGRI SAC
M. Gonzales Docente Departamento Académico de Fitopatología, Facultad de Agronomía–Universidad Nacional Agraria La Molina (UNALM)

DOI:

https://doi.org/10.21704/pja.v3i3.1339

Keywords:

Biological formulation, Azotobacter salinestris, Bacillus amyloliquefaciens, and Rhizophagus intraradices.

Abstract

de Siguas, Arequipa Province, Peru. The concentrations used were 2, 4, and 6 kg ha−1 with 4 applications by means of impregnation to the transplant and via drench every 15 days. The statistical design was through a DBCA with factorial arrangement randomly distributed in four blocks. The tests used were the orthogonal contrast test and Duncan’s multiple comparison test (α = 0.05). The findings showed that the treatment concentrations of 4 kg ha−1 and 6 kg ha−1 resulted in a lower incidence of Fusarium oxysporum, at 6.71% and 9.36%, an ABCPE of 637.78 and 950.14 units, and an exportable yield of 66.34 t ha−1 and 65.42 t ha−1, respectively, displaying significant differences from the control. The first application was statistically significant to the treatments with the highest number of applications, showing a greater exportable yield of 67.54 t ha−1. The best interactions between concentrations and applications were 6 kg ha−1 with 1 application, 4 kg ha−1 with 2 applications, and 4 kg ha−1 with 1 application, with exportable yields of 70.66, 69.61, and 69.11 t ha−1, respectively.

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