Maize population density, light attenuation coefficient and yield

Authors

  • Alejandro Morales Ruiz Ciencias Agropecuarias y Recursos Naturales- Universidad Autónoma del Estado de México
  • Edgar Jesús Morales Rosales Centro de Investigación y Estudios Avanzados en Fitomejoramiento. Universidad Autónoma del Estado de México. Campus Universitario El Cerrillo Piedras Blancas, Municipio de Toluca, Estado de México, C. P. 50200. Tel. 017222965518. Ext. 146
  • Omar Franco Mora Centro de Investigación y Estudios Avanzados en Fitomejoramiento. Universidad Autónoma del Estado de México. Campus Universitario El Cerrillo Piedras Blancas, Municipio de Toluca, Estado de México, C. P. 50200. Tel. 017222965518. Ext. 146
  • Dolores Mariezcurrena Berasaín Centro de Investigación y Estudios Avanzados en Fitomejoramiento. Universidad Autónoma del Estado de México. Campus Universitario El Cerrillo Piedras Blancas, Municipio de Toluca, Estado de México, C. P. 50200. Tel. 017222965518. Ext. 146
  • Gaspar Estrada Campuzano Centro de Investigación y Estudios Avanzados en Fitomejoramiento. Universidad Autónoma del Estado de México. Campus Universitario El Cerrillo Piedras Blancas, Municipio de Toluca, Estado de México, C. P. 50200. Tel. 017222965518. Ext. 146
  • Tomás Héctor Norman Mondragón Centro de Investigación y Estudios Avanzados en Fitomejoramiento. Universidad Autónoma del Estado de México. Campus Universitario El Cerrillo Piedras Blancas, Municipio de Toluca, Estado de México, C. P. 50200. Tel. 017222965518. Ext. 146

DOI:

https://doi.org/10.29312/remexca.v0i8.1098

Keywords:

Zea mays L., leaf area index, intercepted radiation, radiation-use efficiency

Abstract

During 2008 and 2009 six maize cultivars were evaluated under three population densities in Toluca, Mexico to determine leaf area index, light attenuation coefficient, intercepted radiation, radiation-use efficiency and grain yield. A randomized complete block design in a split- plot arrangement was used, large plots corresponded to the population densities (6.9, 7.8 y 8.9 plants m-2) and the subplots to cultivars (‘Amarillo’, ‘Cacahuacintle’, ‘Jiquipilco’, ‘Z-60’, ‘Cóndor’ and ‘H-50’). The combined analysis of variance showed significant differences between years, densities and cultivars for all variables, except for light attenuation coefficient and intercepted radiation between years. The interactions were not significant, except in year × density in leaf area index and year × cultivar for grain yield. Among years, the cultivars average yield was higher in 2008 (1 133 g m-2), in 16.9% than 2009, due to the higher number of grains m-2 (2 826) and the radiation-use efficiency (0.79 g MJ-1). The best population densities were 7.8 and 8.9 plants m-2 (average of 1 081 and 1 096 g m-2, respectively) equivalent to 13.9% and 15.1% more than with 6.9 plants m-2. The above resulted from the best averages for these population densities in all variables under study. Among cultivars, ‘Jiquipilco’, ‘Amarillo’ and ‘Cóndor’ showed the highest average with 1 156, 1 076 and 1 047 g m-2.

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Published

2018-04-13

How to Cite

Morales Ruiz, Alejandro, Morales Rosales Edgar Jesús, Omar Franco Mora, Mariezcurrena Berasaín Dolores, Gaspar Estrada Campuzano, and Norman Mondragón Tomás Héctor. 2018. “Maize Population Density, Light Attenuation Coefficient and Yield”. Revista Mexicana De Ciencias Agrícolas, no. 8 (April). México, ME:1425-31. https://doi.org/10.29312/remexca.v0i8.1098.

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