The nitrogen and potassium ratio affects the growth of mavuno grass than the dose of the nutrient applied

Authors

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

Abstract

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 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 of N and K 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 was higher (p<0.05) when fertilization was carried out with both nutrients, being higher in the 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.

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Published

2024-09-10

How to Cite

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., … Carvalho da Silva, T. (2024). The nitrogen and potassium ratio affects the growth of mavuno grass than the dose of the nutrient applied. Revista Científica De Produção Animal, 25(1-2), 8–12. Retrieved from https://periodicos.ufpb.br/index.php/rcpa/article/view/68294

Issue

Vol. 25 No. 1-2 (2023): Revista Científica de Produção Animal

Section

Artigos

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