Vegetative Propagation of Schizachyrium tenerum (Poaceae) Under Different Substrates and Environments

Floresta e Ambiente

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Editor Chefe: João Vicente de Figueiredo Latorraca
Início Publicação: 31/12/1993
Periodicidade: Trimestral

Vegetative Propagation of Schizachyrium tenerum (Poaceae) Under Different Substrates and Environments

Ano: 2021 | Volume: 28 | Número: 2
Autores: Yara Panta de AraújoLuciana Sandra Bastos de SouzaThieres George Freire da SilvaMagna Soelma Beserra de Moura
Autor Correspondente: Thieres George Freire da Silva | [email protected]

Palavras-chave: Caatinga; radiation use efficiency; water use efficiency

Resumos Cadastrados

Resumo Inglês:

This study investigated the water and radiation use efficiencies by Erythrina velutina and Enterolobium contortisiliquum under four water regimes. The experiment was carried out in the municipality of Serra Talhada, PE, Brazil. The experimental design was completely randomized with a 2 x 4 factorial arrangement and three replications. The water regimes were imposed from water replenishments based on the reference evapotranspiration (25, 50, 75 and 100% ET0). Water and radiation use efficiencies were calculated to the 120 days of growth. E. velutina showed a greater accumulated dry biomass (4.89 g pl-1) than E. contortisiliquum (2.22 g pl-1). The 75% ET0 water regime can be adopted without damage to the growth of both species. E. velutina was more efficient in the conversion of water (0.42 g l-1) and radiation in dry biomass (0.028 g MJ-1), indicating high environmental resilience, which is important features to choose species more adequate for reforestation activities.