Artículos de revistas
Combinação de métodos de inoculação de Azospirillum brasiliense com adubação nitrogenada de cobertura aumenta produtividade de milho
Fecha
2016-02-01Registro en:
Ciencia Rural, v. 46, n. 2, p. 210-215, 2016.
1678-4596
0103-8478
10.1590/0103-8478cr20131283
S0103-84782016000200210
2-s2.0-84949806849
S0103-84782016000200210.pdf
Autor
Universidade Federal de Sergipe (UFS)
Universidade Estadual do Centro-oeste (UNICENTRO)
Universidade Estadual Paulista (Unesp)
Ohio Agricultural Research and Development Center
Universidade Federal do Paraná (UFPR)
Institución
Resumen
Nitrogen (N) is the most limiting nutrient for corn production. Thereby, the goal of the paper was to evaluate inoculation methods of Azospirillum brasilense in order to partially supply N required by the crop. The experiment was carried out in Guarapuava, PR, Brasil, in 2011/2012 growing season. Randomized blocks with factorial 3 inoculation methods (seed treatment, planting furrow and non-inoculated control) x 5 doses of nitrogen (0, 75, 150, 225 and 300kg ha-1) x 8 replications was used as the experimental design. Leaf are index, foliar nitrogen content, total chlorophyll, grains per ear and yield were evaluated. There was significant interaction between inoculation methods and nitrogen fertilization to leaf area index, but not for yield. Inoculation with the diazotrophic bacteria provided yield increase of 702kg ha-1 for inoculation in seeding furrow and 432kg ha-1 for inoculation in seed treatment compared to the control, but both treatments did not differ between each other. Furthermore, total chlorophyll, grains per ear and yield were positively affected, with quadratic response, by the nitrogen fertilization in broadcasting.