Determination of the optimal dose of N, P, and K in the cultivation of Avenger hybrid broccoli (Brassica oleracea italica) in Ecuador
Broccoli is a non-traditional export crop for Ecuador. This study used the response surface methodology to optimize the fertilization of hybrid broccoli, Avenger. The research was conducted at Hacienda Las Mercedes, Cotopaxi province, Ecuador, at 2,913 meters above sea level. We evaluated the respon...
| Autores: | , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2024 |
| País: | Ecuador |
| Institución: | Universidad Central del Ecuador |
| Repositorio: | Revista Siembra |
| Idioma: | español inglés |
| OAI Identifier: | oai:revistadigital.uce.edu.ec:article/6658 |
| Acceso en línea: | https://revistadigital.uce.edu.ec/index.php/SIEMBRA/article/view/6658 |
| Access Level: | acceso abierto |
| Palabra clave: | Superficie de respuesta rendimiento nitrógeno fósforo potasio Response surface yield nitrogen phosphorus potassium |
| Sumario: | Broccoli is a non-traditional export crop for Ecuador. This study used the response surface methodology to optimize the fertilization of hybrid broccoli, Avenger. The research was conducted at Hacienda Las Mercedes, Cotopaxi province, Ecuador, at 2,913 meters above sea level. We evaluated the response of broccoli to different doses of N-P-K (Nitrogen, Phosphorus, and Potassium), with five levels ranging from 0 to 300 kg ha-1 of N, 0 to 70 kg ha-1 of P, and 0 to 180 kg ha-1 of K, along with one treatment without fertilization. The experimental design was a Central Composite Rotable Design (CCRD) 3K+1 with four replicates. The variables evaluated included plant height, compactness, equatorial diameter, and head yield. The results showed that: i) the greatest plant height (59.90 cm) was obtained with T13 (150 kg ha-1 N, 70 kg ha-1 P, 90 kg ha-1 K); ii) the highest head compactness (1.12 kg cm-2) was found with T11 (300 kg ha-1 N, 35 kg ha-1 P, 90 kg ha-1 K); iii) the best equatorial diameter (197.80 mm) and yield (25.25 t ha-1) were achieved with T8 (239 kg ha-1 N, 56 kg ha-1 P, 144 kg ha-1 K); and iv) the response surface model suggested an optimal dose of 178 kg ha-1 N, 70 kg ha-1 P, and 25 kg ha-1 K for a yield of 26.5 t ha-1. We can conclude that the model adequately fits the crop yield. |
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