01857nam a2200181 a 450000100080000000500110000800800410001910000230006024501290008326002160021250000170042852011330044565000260157865000230160465300080162770000180163570000220165316549982022-09-09       2008    bl uuuu     u00u1 u    #d1 aSILVA, A. J. P. da  aSoil water balance at diferent distances from a banana Pseudostem under drip irrigation by using TDR.h[electronic resource]  aIn: INTERNATIONAL CONFERENCE OF AGRICULTURAL ENGINEERING; BRAZILIAN CONGRESS OF AGRICULTURAL ENGINEERING, 38.; INTERNATIONAL LIVESTOCK ENVIRONMENT SYMPOSIUM, 8., 2008, Iguassu Falls. [Foz do Iguaçu]: CIGRc2008  aPAP0120.pdf.  aCrop evapotranspiration (ETc) is the basis for calculation plant water needs. Various methods might be used for determining ETc such as the soil water balance that has the following components: water storage variation (h), precipitation (P), irrigation (I), deep percolation (DP), evapotranspiration (ETc) and run off (R). The way these components are measured affects the accuracy of the method. The objective of work was to determine banana evapotranspiration by using soil water balance method with data collected by a TDR equipment at different distances from the banana pseudostem. Soil water content was monitored at various horizontal distances (R) from a banana pseudostem and soil depths(Z) in a 0.20 m x 0.20 m grid of a vertical plane between two pseudostems along plant row. Results showed that evapotranspiration and deep percolation are not uniform around a banana pseudostem and varied according to water and root distribution in the soil profile. The larger values of deep percolation and smaller values of evapotranspiration occured at zones of the soil of smaller percentage of total root length and vice versa  airrigation management  asoil water balance  aTDR1 aCOELHO, E. F.1 aMIRANDA, J. H. de