Mulch decomposition and nitrogen, phosphorus and potassium release in vetiver grass at different plant densities

Authors

  • Jaídson Gonçalves da Rocha UENF/Doutorando https://orcid.org/0000-0002-9933-526X
  • Fábio Cunha Coelho Universidade Estadual do Norte Fluminense Darcy Ribeiro, Campos Dos Goytacazes, RJ https://orcid.org/0000-0002-7037-8864
  • Rosana Teixeira Lelis Universidade Estadual do Norte Fluminense Darcy Ribeiro, Campos Dos Goytacazes, RJ
  • Gabriela Carvalho de Souza Santos Universidade Estadual do Norte Fluminense Darcy Ribeiro, Campos Dos Goytacazes, RJ
  • Mario Euclides Pechara da Costa Jaeggi Universidade Estadual do Norte Fluminense Darcy Ribeiro, Campos Dos Goytacazes, RJ https://orcid.org/0000-0002-2984-2995

Abstract

In order to meet the need for nutrients or soil cover, when plants are used as green manure, it is necessary to determine the ideal plant population, as well as the amount and duration of released nutrients. This study aimed to assess the decomposition and nitrogen (N), phosphorus (P) and potassium (K) release rates of vetiver grass mulch. A split-plot arrangement was used, with the plots consisting of mulch decomposition times after cutting (0, 15, 25, 70 and 125 days) and the subplots of vetiver plant densities (1, 2, 3 and 4 plants m-2). A randomized block design was used, with four replications. The highest release rates for N, P and K were recorded during the first five days. The plant density of 3 plants m-2 exhibited the highest mulch dry weight at 125 days and contained more N, P and K, when compared to the populations of 1, 2 and 4 plants m-2.

KEYWORDS: Chrysopogon zizanoides (L.) Robert, nutrient cycling, green manure.

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Published

2020-11-30

How to Cite

DA ROCHA, J. G.; CUNHA COELHO, . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F. .; TEIXEIRA LELIS, R. .; CARVALHO DE SOUZA SANTOS , G.; EUCLIDES PECHARA DA COSTA JAEGGI, M. . Mulch decomposition and nitrogen, phosphorus and potassium release in vetiver grass at different plant densities. Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics], Goiânia, v. 50, p. e64603, 2020. Disponível em: https://revistas.ufg.br/pat/article/view/64603. Acesso em: 15 jan. 2025.

Issue

Vol. 50 (2020)

Section

Research Article

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