Fodder productivity in corn hybrids under different plant densities and fertilization rates

Keywords: trilinear hybrids, fodder production, humid tropics, Zea mays L.

Abstract

Fertilization and plant density are some essential technological components in modern agriculture. The aims of this research was to define the effect of plant density and fertilization rates on fodder productivity of three commercial corn hybrids. In the spring-summer 2017 season, an experiment was established in the Cotaxtla Experimental Field of the National Institute for Forestry, Agriculture and Livestock Research (INIFAP in Spanish), under a completely randomized block design arranged in subdivided plots with three replicates. Three factors were studied, fertilization rates (207-69-60 and 253-69-60), corn hybrids (H-564C, H-567 and HE-3B) and plant densities (62 500, 83 000 and 100 000 plants ha-1). During the study period, the accumulated monthly precipitation was 1003.6 mm and average temperature was 26.7 °C; the maximum temperature occurred in August (28.7 °C) and the minimum in November (25.3 °C) 2017. Duncan’s test (P ≤ 0.05) showed that the fertilization rates integrated by the formula 253‑69‑60 increased green fodder yield, 15.06% more than in the formula 207-69-60. Hybrids H-564C and HE-3B expressed the best green fodder yields with 53 105 and 51 937 kg ha-1, respectively. Increasing plant density (62 500 to 100 000 plants ha‑1) and green fodder yield when high units of N were applied (253-69-60). Likewise, the increase in plant density did not affect the agronomic characteristics of the evaluated hybrids. The commercial H-564C hybrid expressed the highest green and dry fodder yields, followed by the experimental HE-3B hybrid. This last material is a candidate to be released and commercialized for fodder purposes in the tropical area of the state of Veracruz.

Author Biographies

Flavio Antonio Rodríguez-Montalvo, Instituto Nacional de Investigaciones Agrícolas y Pecuarias (INIFAP)

Investigador del programa de maíz Campo Experimental Cotaxtla CIRGOC INIFAP

Mauro Sierra-Macías, Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias

Investigador del programa de maíz Campo Experimental Cotaxtla CIRGOC INIFAP

Alejandro Espinosa-Calderón, Campo Experimental Valle de México CIRCE INIFAP

Investigador titular de Producción y Tecnología de Semillas, campo experimental Valle de México CIRCE,INIFAP, SAGARPA, miembro del SNI , Nivel III.

Marcos Ventura Vázquez-Hernández, Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias

Investigador del programa de maíz Campo Experimental Cotaxtla CIRGOC INIFAP

Sabel Barrón-Freyre, Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias

Campo Experimental Huimanguillo CIRGOC INIFAP

Pablo Andrés-Meza, Universidad Veracruzana, Facultad de Ciencias Biológicas y Agropecuarias, región Orizaba-Córdoba

Profesor de tiempo completo de la Universidad Veracruzana y miembro SNI 1 del Sistema Nacional de Investigadores.

José Luis Del Rosario-Arellano, Universidad Veracruzana, Facultad de Ciencias Biológicas y Agropecuarias

Estudiante del Doctorado en Ciencias Agropecuarias de la Universidad Veracruzana, campus Peñuela, Facultad de Ciencias Biológicas y Agropecuarias.

Published
2021-03-12
Section
Scientific Papers