The nitrogen to potassium ratio affects the growth of Mavuno grass

Autores

  • Nauara Moura Lage Filho Universidade Federal Rural da Amazônia https://orcid.org/0000-0003-2914-4182
  • Airton Conceição dos Santos Universidade Federal Rural da Amazônia
  • Andreza dos Santos Amoras Universidade Federal Rural da Amazônia
  • João Victor Costa de Oliveira Universidade Federal Rural da Amazônia
  • Rômulo Engelhard da Silva Filho Universidade Federal Rural da Amazônia
  • Aníbal Coutinho do Rêgo Universidade Federal do Ceará https://orcid.org/0000-0002-5452-0832
  • Ebson Pereira Cândido Universidade Federal Rural da Amazônia
  • Thiago Carvalho da Silva Universidade Federal Rural da Amazônia

Resumo

Nitrogen (N) and potassium (K) are nutrients that act together for plant development, acting mainly in photosynthesis and plant cell division processes. This work aimed to evaluate the effect of different N: K ratios on the morphogenic, structural, and productive characteristics of Mavuno grass (Urochloa sp.) grown in a greenhouse. A completely randomized design with four replications was used. The treatments used were a control (without application of N and K) and five N: K ratios (75:0, 0:75, 75:75, 150:75, and 300:150 kg ha-1). Urea was used as nitrogen fertilizer and potassium chloride as potassium fertilizer. Two production cycles were carried out, lasting 28 days each. The leaf appearance rate when fertilization was carried out with both nutrients was higher (P<0,05) than the other treatments being the highest for 75:75 ratio. The same effect was observed for the leaf elongation rate. The population density of tillers was greater (p<0.05), as the N: K ratio was increased, with the ratio 300:75 differing approximately 128%, 97%, and 80% from the ratios 0:0, 75:0 and 0:75. Dry matter production showed a difference (p<0.05) between treatments, where the relationships that included both nutrients showed higher productivity. The proportion of leaf blade differed between the N: K ratios (p<0.05), with a greater proportion of this component being observed in the absence of one of the nutrients. Therefore, fertilization with N and K favors the development and productivity of Mavuno grass, where observed that the 75:75 ratio presented better production and growth rates in Mavuno grass, being an efficient solution for the grass.

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Publicado

2024-09-10

Como Citar

Moura Lage Filho, N., Conceição dos Santos, A., dos Santos Amoras, A., Costa de Oliveira, J. V., Engelhard da Silva Filho, R., Coutinho do Rêgo, A., Pereira Cândido, E., & Carvalho da Silva, T. (2024). The nitrogen to potassium ratio affects the growth of Mavuno grass. Revista Científica De Produção Animal, 25(1-2), 8–12. Recuperado de https://periodicos.ufpb.br/index.php/rcpa/article/view/68294

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