Publicado

2023-01-15

Benefits of liquid urea and a microbial catalyst on biomass and the nutritional value of Mombasa grass

Beneficios de la urea líquida y un catalizador microbiano en la biomasa y el valor nutricional del pasto Mombasa

DOI:

https://doi.org/10.15446/acag.v71n1.99814

Palabras clave:

Biofertilizer, bromatological variables, nitrogen fertilizer, organic carbon, tropical forage (en)
Biofertilizante, carbono orgánico, fertilizante nitrogenado, forraje tropical, variables bromatológicas (es)

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During 2019, an experiment was conducted at the Agricultural Experiment Station in Isabela (Puerto Rico) on an Oxisol with previously well-stablished stands of cv. Mombasa. This experiment assessed the effects of a microbial catalyst (MC) and liquid urea 22-0-0 (LU) at a rate of 168 kg ha-1 (in split applications), a mixture of LU+MC and a control on aboveground biomass, root biomass, nutritional value, nitrogen use efficiency and soil parameters on cv. Mombasa at 35-day (d) harvests during six harvests. The study was established in a completely randomized design with four replicates. The effects of LU and MC on belowground (root) biomass were determined by collecting samples in 1 m2 to determine the yield and chemical composition. Soil samples were collected at 15 cm depth using a soil corer at the first and 6th harvest from each plot to assess organic carbon (OC), total nitrogen (TN), pH, macronutrients, and cation exchange capacity (CEC). The results showed that aboveground biomass doubled using LU (2369 kg DM ha-1) compared to the control and MC (1100 kg DM ha-1). Crude protein (CP) was 10.1 % using LU. Neutral Detergent fiber was 70 % for the control, 74.2 % when LU was used, and around 40 % for acid detergent fiber (ADF) for any treatment. Overall, there were no significant effects of treatments on OC and organic matter percentages, P, N, Ca, Mg, and CEC. In conclusion, LU is an excellent source of N for Mombasa, but shorter harvest frequencies may be required to improve the fiber quality of Mombasa.

Durante el año 2019 se llevó a cabo un experimento en la Estación Experimental Agrícola de Isabela (Puerto Rico) en un Oxisol con un pastizal previamente establecido con el cv. Mombasa. El objetivo de este experimento fue evaluar el efecto de un catalizador microbiano (CM) y la urea líquida 22-0-0 (UL) a una tasa de 168 kg ha-1 (en aplicaciones subdivididas), una mezcla de MC+UL y un control sobre la biomasa aérea, biomasa de la raíz, el valor nutricional, la eficiencia de uso de nitrógeno y parámetros del suelo sobre el cv. Mombasa a los 35 días de cosecha durante seis periodos de cosecha. El estudio fue establecido en un diseño completamente aleatorizado con cuatro replicas. Los efectos de CM y UL sobre la biomasa aérea y la producción de raíces fueron determinadas mediante la recolección de muestras en 1 m2 para determinar el rendimiento y la composición química. Las muestras de suelo fueron recolectadas a 15 cm de profundidad usando un barreno en la 1era y 6ta cosecha en cada unidad experimental para evaluar el carbono orgánico en el suelo (CO), el nitrógeno total (NT), el pH, los macronutrientes y la capacidad de intercambio catiónico (CIC). Los resultados mostraron que el rendimiento de la biomasa aérea fue mayor cuando se usó UL (2369 kg MS ha-1) comparado con el control y el CM (1100 kg MS ha-1). La proteína cruda (PC) fue de 10.1 % usando UL. La fibra detergente neutra (FDN) fue de 70 % para el control y 74.2 % cuando se usó UL, y alrededor del 40 % para la fibra detergente ácida (FDA) durante todos los tratamientos. No se encontraron efectos significativos de los tratamientos sobre el porcentaje de CO y materia orgánica, P, N, Ca, Mg y CIC. En conclusión, la UL es una excelente fuente de N para el pasto guinea local, pero es posible que se necesiten frecuencias de cosecha más cortas para mejorar la calidad de la fibra.

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Cómo citar

APA

Alquichire Rojas, S. L. y Valencia-Chin, E. (2023). Benefits of liquid urea and a microbial catalyst on biomass and the nutritional value of Mombasa grass. Acta Agronómica, 71(1), 64–72. https://doi.org/10.15446/acag.v71n1.99814

ACM

[1]
Alquichire Rojas, S.L. y Valencia-Chin, E. 2023. Benefits of liquid urea and a microbial catalyst on biomass and the nutritional value of Mombasa grass. Acta Agronómica. 71, 1 (ene. 2023), 64–72. DOI:https://doi.org/10.15446/acag.v71n1.99814.

ACS

(1)
Alquichire Rojas, S. L.; Valencia-Chin, E. Benefits of liquid urea and a microbial catalyst on biomass and the nutritional value of Mombasa grass. Acta Agron. 2023, 71, 64-72.

ABNT

ALQUICHIRE ROJAS, S. L.; VALENCIA-CHIN, E. Benefits of liquid urea and a microbial catalyst on biomass and the nutritional value of Mombasa grass. Acta Agronómica, [S. l.], v. 71, n. 1, p. 64–72, 2023. DOI: 10.15446/acag.v71n1.99814. Disponível em: https://revistas.unal.edu.co/index.php/acta_agronomica/article/view/99814. Acesso em: 19 ene. 2025.

Chicago

Alquichire Rojas, Shirley Lorena, y Elide Valencia-Chin. 2023. «Benefits of liquid urea and a microbial catalyst on biomass and the nutritional value of Mombasa grass». Acta Agronómica 71 (1):64-72. https://doi.org/10.15446/acag.v71n1.99814.

Harvard

Alquichire Rojas, S. L. y Valencia-Chin, E. (2023) «Benefits of liquid urea and a microbial catalyst on biomass and the nutritional value of Mombasa grass», Acta Agronómica, 71(1), pp. 64–72. doi: 10.15446/acag.v71n1.99814.

IEEE

[1]
S. L. Alquichire Rojas y E. Valencia-Chin, «Benefits of liquid urea and a microbial catalyst on biomass and the nutritional value of Mombasa grass», Acta Agron., vol. 71, n.º 1, pp. 64–72, ene. 2023.

MLA

Alquichire Rojas, S. L., y E. Valencia-Chin. «Benefits of liquid urea and a microbial catalyst on biomass and the nutritional value of Mombasa grass». Acta Agronómica, vol. 71, n.º 1, enero de 2023, pp. 64-72, doi:10.15446/acag.v71n1.99814.

Turabian

Alquichire Rojas, Shirley Lorena, y Elide Valencia-Chin. «Benefits of liquid urea and a microbial catalyst on biomass and the nutritional value of Mombasa grass». Acta Agronómica 71, no. 1 (enero 15, 2023): 64–72. Accedido enero 19, 2025. https://revistas.unal.edu.co/index.php/acta_agronomica/article/view/99814.

Vancouver

1.
Alquichire Rojas SL, Valencia-Chin E. Benefits of liquid urea and a microbial catalyst on biomass and the nutritional value of Mombasa grass. Acta Agron. [Internet]. 15 de enero de 2023 [citado 19 de enero de 2025];71(1):64-72. Disponible en: https://revistas.unal.edu.co/index.php/acta_agronomica/article/view/99814

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