Publicado

2024-03-19

Doses and timing of nitrogen application on spinach productivity

Dosis y momentos de aplicación de nitrógeno en la productividad de las espinacas

DOI:

https://doi.org/10.15446/acag.v72n2.100895

Palabras clave:

Nitrogen fertilization, plant nutrition, Tetragonia tetragonoides Pall., vegetables (en)
hortalizas, fertilización nitrogenada, nutrición vegetal, Tetragonia tetragonioides Pall. (es)

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Spinach has several relevant properties, great nutritional importance, and an affordable price, being a significant subject in various studies. However, the current literature is scarce regarding the production and nutritional requirements of this crop, with nitrogen being the element mostly required. The objective of this study was to evaluate the effect of nitrogen doses and application timings on the nutrition and productivity of spinach. The experimental design was a randomized block in a 6 x 4 factorial scheme, consisting of the combination of six N doses (0, 30, 60, 90, 120, and 150 kg ha-1) and four application timings (planting (PT), 15, 30, and 45 days after planting (DAP)) of urea nitrogen fertilizer, with four replications. The analyzed variables were chlorophyll content (CF), plant height (AP), fresh mass (MF), dry mass (MS), nitrogen content (TN), and nitrogen accumulation (AN). The data obtained were subjected to analysis of variance (F test), and the means obtained based on the N application timing were compared by Tukey's test at a 5 % probability level. For nitrogen doses, regression analysis was performed. At 15 DAP, the application of 90 kg ha-1 of nitrogen stood out, increasing productivity and obtaining 50.38 kg ha-1 of spinach. However, the productivity achieved in absence of nitrogen topdressing fertilization was satisfactory. Therefore, under conditions like those of the conducted study, it is possible to achieve good productivity and nutrition values without resorting to topdressing nitrogen fertilization, thereby emphasizing the advantage of reduced production costs.

La espinaca tiene varias propiedades relevantes, gran importancia nutricional y precio accesible. Su importancia ha sido objeto de varios estudios, pero la literatura actual es escasa con relación a la producción y necesidades nutricionales de este cultivo, siendo el nitrógeno el elemento que requiere en mayor cantidad. El objetivo de este estudio fue evaluar el efecto de las dosis y tiempos de aplicación de nitrógeno en la nutrición y productividad de la espinaca. El diseño experimental fue de bloques al azar, en esquema factorial 6 x 4, que consistió en la combinación de seis dosis de N (0, 30, 60, 90, 120 y 150 kg ha-1) y cuatro tiempos de aplicación (trasplante (PT), 15, 30 y 45 días después del trasplante (DDT)) de fertilizante nitrogenado de urea, con cuatro repeticiones. Las variables analizadas fueron contenido de clorofila (CF), altura de la planta (AP), masa fresca (MF), masa seca (MS), contenido de nitrógeno (TN) y acumulación de nitrógeno (AN). Los datos obtenidos se sometieron a análisis de varianza (prueba F) y los promedios obtenidos en función del tiempo de aplicación de N fueron comparados por la prueba de Tukey al 5 % de probabilidad; para dosis de nitrógeno se realizó un análisis de regresión. A los 15 DDT se destacó la aplicación de 90 kg ha-1 de nitrógeno, aumentando la productividad y obteniendo 50.38 kg ha-1 de espinaca. Sin embargo, la productividad en ausencia de fertilización nitrogenada en cobertura fue satisfactoria. Así, se sugiere que, bajo condiciones similares a las del estudio, se puede prescindir del fertilizante nitrogenado en el cultivo de espinacas, obteniendo buena productividad y valores nutricionales, y resaltando la ventaja de reducir los costos de producción.

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Cómo citar

APA

Faria, L., de Mello, M. C. y Pelá, A. (2024). Doses and timing of nitrogen application on spinach productivity. Acta Agronómica, 72(2), 139–145. https://doi.org/10.15446/acag.v72n2.100895

ACM

[1]
Faria, L., de Mello, M.C. y Pelá, A. 2024. Doses and timing of nitrogen application on spinach productivity. Acta Agronómica. 72, 2 (mar. 2024), 139–145. DOI:https://doi.org/10.15446/acag.v72n2.100895.

ACS

(1)
Faria, L.; de Mello, M. C.; Pelá, A. Doses and timing of nitrogen application on spinach productivity. Acta Agron. 2024, 72, 139-145.

ABNT

FARIA, L.; DE MELLO, M. C.; PELÁ, A. Doses and timing of nitrogen application on spinach productivity. Acta Agronómica, [S. l.], v. 72, n. 2, p. 139–145, 2024. DOI: 10.15446/acag.v72n2.100895. Disponível em: https://revistas.unal.edu.co/index.php/acta_agronomica/article/view/100895. Acesso em: 10 jul. 2024.

Chicago

Faria, Layanara, Matheus Correa de Mello, y Adilson Pelá. 2024. «Doses and timing of nitrogen application on spinach productivity». Acta Agronómica 72 (2):139-45. https://doi.org/10.15446/acag.v72n2.100895.

Harvard

Faria, L., de Mello, M. C. y Pelá, A. (2024) «Doses and timing of nitrogen application on spinach productivity», Acta Agronómica, 72(2), pp. 139–145. doi: 10.15446/acag.v72n2.100895.

IEEE

[1]
L. Faria, M. C. de Mello, y A. Pelá, «Doses and timing of nitrogen application on spinach productivity», Acta Agron., vol. 72, n.º 2, pp. 139–145, mar. 2024.

MLA

Faria, L., M. C. de Mello, y A. Pelá. «Doses and timing of nitrogen application on spinach productivity». Acta Agronómica, vol. 72, n.º 2, marzo de 2024, pp. 139-45, doi:10.15446/acag.v72n2.100895.

Turabian

Faria, Layanara, Matheus Correa de Mello, y Adilson Pelá. «Doses and timing of nitrogen application on spinach productivity». Acta Agronómica 72, no. 2 (marzo 19, 2024): 139–145. Accedido julio 10, 2024. https://revistas.unal.edu.co/index.php/acta_agronomica/article/view/100895.

Vancouver

1.
Faria L, de Mello MC, Pelá A. Doses and timing of nitrogen application on spinach productivity. Acta Agron. [Internet]. 19 de marzo de 2024 [citado 10 de julio de 2024];72(2):139-45. Disponible en: https://revistas.unal.edu.co/index.php/acta_agronomica/article/view/100895

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