Comparison between climatological and field water balances for a coffee crop

Scientia Agricola

Isabeli Pereira Bruno¹  Adriana Lúcia Da Silva²  Klaus Reichardt²  Durval Dourado-neto²  Osny Oliveira Santos Bacchi²  Clóvis Alberto Volpe² 

[1] ,USP ESALQ Programa de Pós-Graduação em FitotecniaPiracicaba SP ,Brasil

关键词: evapotranspiration;    soil water storage;    available water;    water deficit;    water excess;    evapotranspiração;    armazenamento de água no solo;    água disponível;    défice hídrico;    excesso hídrico;   

DOI  :  10.1590/S0103-90162007000300001

来源: SciELO

【 摘 要 】

The use of climatological water balances in substitution to complete water balances directly measured in the field allows a more practical crop management, since the climatological water balances are based on data monitored as a routine. This study makes a comparison between these methods in terms of estimatives of evapotranspiration, soil water storage, soil available water, runoff losses, and drainage below root zone, during a two year period, taking as an example a coffee crop of the variety Catuaí, three to five years old. Climatological water balances based on the estimation of the evapotranspiration through the methods of Thornthwaite and Penman-Monteith, can reasonably substitute field measured balances, however underestimating the above mentioned variables.

【 授权许可】

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