Journal of Applied Sciences1812-56541812-5662Asian Network for Scientific Information10.3923/jas.2009.1170.1174AinecheeG.Boroomand-NasabS.BehzadM.6200996Information on moisture distribution patterns under
point source trickle emitters is a pre-requisite for the design and operation
of trickle irrigation systems. This will ensure precise placement of water
and fertilizer in the active root zone. The distribution pattern is influenced
by the soil properties and the behavior of applied water. In this study,
water movement in three soil types from a surface point source was investigated.
Experimentation included determination of maximum depths and widths of
wetted zone after one hour time interval of water application. The surface
wetted radius increased with an increase in application rate. A good relationship
was found between the surface wetted radius and the volume of water applied.
This suggested that for a certain volume of water applied, a corresponding
wetted surface radius can be predicted. The numerical values of wetted
surface radius for each flow rate group were compared with those predicted
by the suggested equations. Predictability of model was estimated as 96.8
and 95.3%, respectively, for prediction of wetted width and depth. The
results showed good agreement for all application rates.]]>Battam, M.A., B.G. Sutton and D.G. Boughton, 2003Ekhmaj, A.I., M.S.M. Amin, S. Salim and A.A. Zakaria, 2005Lubana, P.P.S., N.K. Narda and L.C. Brown, 2002Schaap, M.G., F.J. Leij and M.T. van Genuchten, 2001Schwartzman, M. and B. Zur, 1986Peter, J.T., F.J. Cook and K.L. Bristow,2003Warrick, A.W. and D.R. Nielson, 1980