Water and radiation use efficiencies by Erythrina velutina and Enterolobium contortisiliquum under different water conditions.

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.

Bibliographic Details

Main Authors:	ARAÚJO, Y. P. de, SOUZA, L. S. B. de, SILVA, T. G. F. da, MOURA, M. S. B. de
Other Authors:	Yara Panta de Araújo; Luciana Sandra Bastos de Souza; Thieres George Freire da Silva; MAGNA SOELMA BESERRA DE MOURA, CPATSA.
Format:	Artigo de periódico biblioteca
Language:	Ingles English
Published:	2021-02-18
Subjects:	Uso de água, Eficiência do uso da radiação, Água, Enterolobium Contortisiliquum, Caatinga, Biomassa, Water utilization, Water resources, Water, Water balance,
Online Access:	http://www.alice.cnptia.embrapa.br/alice/handle/doc/1130058 https://doi.org/10.1590/2179-8087-FLORAM-2019-0080
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