Seeding density of Amaranthus cruentus microgreens under different electrical conductivities of nutrient solutions

Authors

DOI:

https://doi.org/10.35642/rm.v9i1.1573

Keywords:

Amaranth, Biomass, Hydroponic cultivation, Yield

Abstract

The demand for healthier foods and sustainable production has led the agricultural sector to adopt modern techniques and explore new plant species. Microgreens, harvested at the seedling stage, have been gaining popularity, however there is still a lack of information on their cultivation practices. Thus, this study aimed to evaluate the cultivation of amaranth microgreens (Amaranthus cruentus L.) under different seeding densities and electrical conductivity levels (EC). The experimental design consisted of randomized blocks in a split-plot scheme, with four replications. Three EC levels (supply water – ECw of 0.3 dS m-1 and nutrient solutions – ECsol of 1.0 and 2.0 dS m-1) in the plots and four seeding densities (25, 50, 75, and 100 g m-2) in the subplots were used. The amaranth microgreens were exposed to such conditions for eight days in a greenhouse, when the following were evaluated: seedling height (SH), seedling fresh matter (SFM), seedling dry matter (SDM), seedling moisture content (SMC), and seed mass to produce 1 kg of SFM. The lowest yields of amaranth were recorded under irrigation with only water; making it necessary to use nutrient solutions for its cultivation. The SFM was maximized at seeding densities of 70 and 67 g m-2 under ECsol of 1.0 and 2.0 dS m-1, respectively. It is concluded that amaranth can be grown at the seeding density of 70 g m-2 and irrigated with nutrient solution at the EC of 1.0 dS m-1.

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Author Biographies

  • Edna de Souza Souza, Universidade Federal do Recôncavo da Bahia

    Graduanda em Agronomia pela Universidade Federal do Recôncavo da Bahia (UFRB), Rua Rui Barbosa, 710, Campus Universitário, CEP: 44380-000, Cruz das Almas, Bahia, Brasil.

  • Mairton Gomes da Silva, Universidade Federal do Recôncavo da Bahia (UFRB)

    Doutorado em Engenharia Agrícola pela Universidade Federal do Recôncavo da Bahia (UFRB). Professor Visitante na UFRB, Rua Rui Barbosa, 710, Campus Universitário, CEP: 44380-000, Cruz das Almas, Bahia, Brasil.

  • Izaiana dos Santos Barros, Universidade Federal do Recôncavo da Bahia

    Graduada em Agronomia pela Universidade Federal do Recôncavo da Bahia (UFRB). Rua Rui Barbosa, 710, Campus Universitário, CEP: 44380-000, Cruz das Almas, Bahia, Brasil.

  • Andressa dos Santos Rodrigues, Universidade Federal do Recôncavo da Bahia

    Graduanda em Agronomia pela Universidade Federal do Recôncavo da Bahia (UFRB), Rua Rui Barbosa, 710, Campus Universitário, CEP: 44380-000, Cruz das Almas, Bahia, Brasil.

  • Hans Raj Gheyi, Universidade Federal do Recôncavo da Bahia

    Doutorado em Ciências Agronômicas pela Université Catholique de Louvain (UCLouvain). Professor aposentado da Universidade Federal de Campina Grande (UFCG), Rua Aprígio Veloso, 882, Bairro: Universitário, CEP: 58.429-900, Campina Grande, Paraíba, Brasil.

  • Toshik Iarley da Silva, Universidade Federal do Recôncavo da Bahia

    Doutorado em Fitotecnia pela Universidade Federal de Viçosa (UFV). Professor Adjunto na Universidade Federal do Recôncavo da Bahia (UFRB), Rua Rui Barbosa, 710, Campus Universitário, CEP: 44380-000, Cruz das Almas, Bahia, Brasil.

  • Allysson Jonhnny Torres Mendonça, Universidade Federal do Recôncavo da Bahia

    Mestrado e doutorando em Engenharia Agrícola pela Universidade Federal de Campina Grande (UFCG), Rua Aprígio Veloso, 882, Bairro: Universitário, CEP: 58.429-900, Campina Grande, Paraíba, Brasil.

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2025-07-26

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Seeding density of Amaranthus cruentus microgreens under different electrical conductivities of nutrient solutions. Revista Macambira, [S. l.], v. 9, n. 1, p. 1–19, 2025. DOI: 10.35642/rm.v9i1.1573. Disponível em: https://revista.lapprudes.net/RM/article/view/1573. Acesso em: 29 aug. 2025.