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- Title
CONSUMO HÍDRICO E EXIGÊNCIA TÉRMICA DA PALMA FORRAGEIRA EM AMBIENTE SEMIÁRIDO.
- Authors
SUASSUNA DE LIMA, ANTÔNIO; FERREIRA DA SILVA, PATRÍCIA; MOREIRA DE MATOS, RIGOBERTO; DANTAS NETO, JOSÉ; FALLÉ SABOYA, LUCIANO MARCELO; ALVES DE ALMEIDA, HERMES
- Abstract
This study aimed to evaluate the water consumption and establish the thermal requirement of three varieties of forage palm in different stages of development in a semiarid environment. The experiment was conducted under field conditions in the municipality of Santa Luzia, PB, Poço Redondo Farm. To determine the culture evapotranspiration (ETc), three drainage lysimeters located in the center of the experimental area was used. Each lysimeter contained four plants with similar characteristics and under the same management system as the external plants. The fourth lysimeter was used with grass to determine the reference evapotranspiration ET0. Each lysimeter represents an effective evaporation area of 1.17 m². By the order of emission of the cladodes with the sum of degree days, the four phenophases of the forage palm were determined. The reference evapotranspiration was 7.2 mm dia-1. The evapotranspiration values of ETc culture and cultivation coefficient (Kc), were respectively: 4.8; 4.8 and 4.6 mm dia-1 and 0.72; 0.70 and 0.70, for Orelha the Elefante, Baiana and Miúda varieties. The basal temperature was 18 °C and the thermal sum accumulated in the period was over 4000 °C.
- Publication
Revista IRRIGA - Brazilian Journal of Irrigation & Drainage, 2021, p110
- ISSN
1413-7895
- Publication type
Article
- DOI
10.15809/irriga.2021v1n1p110-128