skip to main content
Idioma:

Relationship between physiology and production of maize under different water replacements in the Brazilian semi-arid

Anjos, Franklin A. dos ; Ferraz, Rener L. de S. ; Azevedo, Carlos A. V. de ; Costa, Patrícia da S. ; Melo, Alberto S. de ; Ramalho, Vitória R. R. de A. R.

SciELO journals 2022

Texto completo disponível

Citações Citado por
  • Título:
    Relationship between physiology and production of maize under different water replacements in the Brazilian semi-arid
  • Autor: Anjos, Franklin A. dos ; Ferraz, Rener L. de S. ; Azevedo, Carlos A. V. de ; Costa, Patrícia da S. ; Melo, Alberto S. de ; Ramalho, Vitória R. R. de A. R.
  • Assuntos: Agricultural Engineering ; Environmental Science ; FOS: Other engineering and technologies
  • Notas: 10.1590/1807-1929/agriambi.v26n1p21-27
    RelationTypeNote: IsSupplementTo -- 10.1590/1807-1929/agriambi.v26n1p21-27
  • Descrição: ABSTRACT Water restriction causes physiological disorders and reduces maize yield in semi-arid regions. The objective of this study was to correlate instantaneous physiological variables with the grain yield of maize using different replacement percentages of water lost through evapotranspiration and to fit a multiple regression model to estimate grain yield in the dry season in the Brazilian semi-arid region. The experiment was installed in a randomized block design, with six percentages of reference evapotranspiration (ETo) repositioning (50, 75, 100, 125, 150, and 175%). The AG 7088 hybrid had a higher CO2 assimilation rate, stomatal conductance, transpiration, and instantaneous water use efficiency, and reduced leaf temperature and vapor pressure deficit under full irrigation (100% of ETo, 458 mm), with yields of 5.75 t ha-1, reaching 6.8 t ha-1 (572 mm) and 7.65 t ha-1 (801 mm) with replacements of 125 and 175% of ETo, respectively. Measurements of leaf gas exchange, vapor pressure deficit, and leaf temperature can be performed at phenological stage R1 to estimate grain yield with greater robustness when combined with water rates applied during the crop cycle.
  • Editor: SciELO journals
  • Data de criação/publicação: 2022
  • Idioma: Inglês
Links
Voltar para lista de resultados
Ir para página anteriorAnterior Resultado  4 AvançarIr para próxima página

  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

Buscando em bases de dados remotas. Favor aguardar.