Fertilización nitro-fosfórica y distancia entre hileras en frijol adzuki (Vigna angularis Willd Ohwi y Hoashi) en Río Frío
Archivos
Fecha
1986
Tipo
artículo original
Autores
Hernández P., Hugo
Araya Villalobos, Rodolfo
Título de la revista
ISSN de la revista
Título del volumen
Editor
Universidad de Costa Rica
Resumen
En la Finca Experimental de la Facultad de Agronomía de la Universidad de Costa Rica en Rio Frio, durante el periodo comprendido entre setiembre y diciembre de 1984, se estudió el efecto de tres dosis de nitrógeno (0,30 y 60 kg N/ha, fuente Nitrato de Amonio), tres dosis de fósforo (0;50 y 100 kg P2O5; fuente Triple Superfosfato) y tres distancias entre hileras (0,2; 0,4 y 0,6 m, a una población de 416.666 plantas/ha) en el comportamiento agrónomico del frijol adzuki (Vigna angularis). El rendimiento en grano sólo fue afectado por las distancias entre hileras, las cuales también influyeron en el número de vainas por planta obtenido en la segunda cosecha y número de vainas por planta promedio ponderado de 1a. y 2da. Cosecha. Las dosis de fósforo no afectaron ninguna de las variables evaluadas (6,0 ug/ml de suelo de P en el suelo). La dosis de 60 kg N/ha fue la que mostró el mayor número de vainas por planta en la 2da. cosecha y en el promedio ponderado de la 1a. y la 2da. cosecha. Las interacciones que dieron efectos significativos fueron dosis de N x dosis de P2O5 x distancia entre hileras, para la altura de planta. La producción promedio de grano fue de 1699 kg/ha. No hubo incidencia de efermedades, sin embargo la lluvia durante el ciclo del cultivo fue de 1786,9 mm. Tampoco hubo acame de las plantas las cuales tuvieron una altura promedio de 0,36 m.
The effect of three doses of nitrogen (0,30 and 50 kg/ha as amonium nitrate), three doses of phosphorus (0,50 and 100 kg/ha as triple superphosphate P2O5) and three planting distances between rows (0.2, 0.4 and 0.6 m with a population of 416,666 plants/ha) were evaluated on the yield of Adzuki (Vigna angularis Willd, Ohwi and Hoashi) in the period between September and December, 1984, at the Rio Frio Experimental Farm of the University of Costa Rica. The grain yiel was only affected by the distances between rows, which also influenced the number of pods/plant in the second picking and the weighted arithmetic mean number of pods in the first and second picking. The phosphorus did not affect any of the variables (6.0 ug P/ml of soil). The nitrogen at the rate of 60 kg/ha produced the largest number of pods/plants in the second picking. The interactions that showed a significant effect were the N doses x P doses for the number of grains/pod, and N doses x P doses x distances between rows for plant height. The average grain yield was 1699 kg/ha. Although the rainfall was 1,786.9 mm during the vegetative cycle, there was no disease incidence. There was no lodging and the plants’ height average was 0.36 m.
The effect of three doses of nitrogen (0,30 and 50 kg/ha as amonium nitrate), three doses of phosphorus (0,50 and 100 kg/ha as triple superphosphate P2O5) and three planting distances between rows (0.2, 0.4 and 0.6 m with a population of 416,666 plants/ha) were evaluated on the yield of Adzuki (Vigna angularis Willd, Ohwi and Hoashi) in the period between September and December, 1984, at the Rio Frio Experimental Farm of the University of Costa Rica. The grain yiel was only affected by the distances between rows, which also influenced the number of pods/plant in the second picking and the weighted arithmetic mean number of pods in the first and second picking. The phosphorus did not affect any of the variables (6.0 ug P/ml of soil). The nitrogen at the rate of 60 kg/ha produced the largest number of pods/plants in the second picking. The interactions that showed a significant effect were the N doses x P doses for the number of grains/pod, and N doses x P doses x distances between rows for plant height. The average grain yield was 1699 kg/ha. Although the rainfall was 1,786.9 mm during the vegetative cycle, there was no disease incidence. There was no lodging and the plants’ height average was 0.36 m.