Abstract

A field study on Cablegation Irrigation System was carried out at the TamilNadu Agricultural University campus to examine the soil moisture storage and uniformity of moisture distribution. The system's performance was tested varying the pipe gradients to 1.0, 1.5, and 2.0 per cent and the outlet orientations to 60° and 90°. The system showed uniform depth of moisture storage along the lenght and depth of the Cablegation furrows whereas, the depth of storage decreased linearly from upstream to downstream end in the continuously irrigated furrow. The Uniformity Coefficient was found to be about 95 per cent, 20 per cent higher than that of the continuous. The overall performance of the system at both 60° and 90° orientations were good, only with slight variations in their moisture storage pattern at different pipe gradients.

Keywords: Cablegation Irrigation System, Field study