Efecto de la inoculación de cepas de Azospirillum sp. sobre altura, biomasa y contenido de nitrógeno en genotipos de maíz forrajero
DOI:
https://doi.org/10.59741/agraria.v3i1-2-3.527Keywords:
Azospirillum, fertilization, forage, Zea mays L.Abstract
Forage maize is the main food in the diet of ruminants thus, it is necessary that it has both a nutritious quality, and a high yield; for this reasons it demands a chemical fertilization, as it is traditionally done. Nevertheless, for the time being there exist alternative s of organic fertilization like the biological one; for instance, bacteria of the Azotobacter and Azospirillum genera, and fungi like mycorrhizae. The objectives of this assay were: a) to isolate and to identify strains of Azospirillum sp. of three localities and b) to evaluate the effect of the inoculation of seed in two elite lines of forage maize with strains of Azospirillum sp. in height and N content in plant. Seed of 2 elite lines of forage maize was used, the CML-384 selected under low conditions of content of N and CML-321 with a normal content of N. The evaluated variables were: height of plant, fresh weight, and dry weight of foliage and root, and N content. An experimental completely randomized design was used. The statistical analysis was performed with the help of the SAS software. Forty strains of Azospirillum sp., from three localities: Torreón Coah., Celaya Gto., and Buenavista Coah. Were obtained and isolated, and it was shown that the best strains were numbers 4 and 21, since it is possible to associate them to different types of lines generating an increase in the content of N.
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