Comparison between climatological and field water balances for a coffee crop

• Autor(a) principal: Bruno,Isabeli Pereira
• Data de Publicação: 2007
• Outros Autores: Silva,Adriana Lúcia da, Reichardt,Klaus, Dourado-Neto,Durval, Bacchi,Osny Oliveira Santos, Volpe,Clóvis Alberto
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Scientia Agrícola (Online)
• Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162007000300001
• topic: evapotranspiration; soil water storage; available water; water deficit; water excess

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.