Mango was planted in a waterlogged plot after installing subsurface rainage system at the Gujarat Agril. University Farm, Navsari during 1994–95. The main problem of the area washigh see pageinflow from the canal, overflow of irrigation water from surrounding fields and leakage from the undergroud irrigation pipeline. The subsurface drains were installed at 20, 30, and 40 metres apart at a depth of 1.0 metre Three year's of experimental results showed a very good response of growth attributes of mango plants owing to subsurface drainage system installation. Plant height increased by about 108.2 43.1 and 37.9%respectively for 20, 30, and 40 metre drain spacings over the control. Imrovement in the plant spread was 119.75, 108.64, and 61.72% respectively, over the control. The average number of shoots was higher in the drained plots compared to the control plot. Among all the treatments, 20 metre drain spacing was the best followed by 30 m. and 40m.
