Relación entre conteo de nódulos, rendimiento del frejol y aplicación fosfatada
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Rev. Inv. Cs. Agro. y Vet.
Abstract
Con el objetivo de evaluar el efecto de la fertilización fosfatada sobre conteo de nódulos y rendimiento del grano en frejol (Vigna unguiculata) variedad San Francisco-I, Método: se realizó un experimento en Medina, Ñeembucú, Paraguay. El suelo experimental fue Entisol (Typic Psammaquent), con baja fertilidad y bajo contenido de fósforo. Se utilizó un diseño de bloques completamente al azar con cuatro repeticiones y cinco niveles de fertilización fosfatada (0, 25, 50, 100 y 200 kg P₂O₅/ha). A los 60 días se evaluó el conteo de nódulos por planta y al momento de cosecha se midió el rendimiento de grano. Los resultados mostraron diferencias significativas (p<0,05) en conteo de nódulos y diferencias altamente significativas (p<0,01) en rendimiento de grano según niveles de fosfato aplicados, observándose relación positiva entre nodulación y productividad. Conclusiones: El tratamiento con 50 kg P₂O₅/ha presentó el mayor beneficio económico, considerándose la dosis óptima para condiciones de baja fertilidad.
With the objective of evaluating the effect of phosphated fertilization on nodule count and grain yield in cowpea (Vigna unguiculata) variety San Francisco-I, a method was implemented in Medina, Ñeembucú, Paraguay. The experimental soil was Entisol (Typic Psammaquent), with low fertility and low phosphorus content. A completely randomized block design with four replications and five levels of phosphated fertilization (0, 25, 50, 100, and 200 kg P₂O₅/ha) was used. At 60 days, nodule count per plant was evaluated, and at harvest time, grain yield was measured. The results showed significant differences (p<0.05) in nodule count and highly significant differences (p<0.01) in grain yield according to the applied phosphate levels, with a positive relationship observed between nodulation and productivity. The conclusions indicated that the treatment with 50 kg P₂O₅/ha presented the greatest economic benefit, being considered the optimal dose for low fertility conditions.
With the objective of evaluating the effect of phosphated fertilization on nodule count and grain yield in cowpea (Vigna unguiculata) variety San Francisco-I, a method was implemented in Medina, Ñeembucú, Paraguay. The experimental soil was Entisol (Typic Psammaquent), with low fertility and low phosphorus content. A completely randomized block design with four replications and five levels of phosphated fertilization (0, 25, 50, 100, and 200 kg P₂O₅/ha) was used. At 60 days, nodule count per plant was evaluated, and at harvest time, grain yield was measured. The results showed significant differences (p<0.05) in nodule count and highly significant differences (p<0.01) in grain yield according to the applied phosphate levels, with a positive relationship observed between nodulation and productivity. The conclusions indicated that the treatment with 50 kg P₂O₅/ha presented the greatest economic benefit, being considered the optimal dose for low fertility conditions.
Description
Vol. 9, No. 27