Effect of bore well saline waters on three rice types

Abstract

Effect of three bore well saline waters of EC 1500, 2000 and 2500 micromhos per cm were compared with rain water (Control) on the performance of three short duration photoinsensitive rice types viz., ADT-31, Ac-1 and Ac-2 in a pot culture experiment with alluvial clay soil of the Annamalai University Experimental Farm. With water of EC 1500 micromhos per cm, Ac-1 and Ac-2 gave significantly higher grain yield than ADT-31 . With water of EC 2000 micromhos per cm, ADT-31 failed to survive while the types Ac-1 and Ac-2 survived to maturity and yielded even with water of EC 2500 micromhos per cm. Of the two types Ac-1 and Ac-2, the former was superior. By the use of saline water, hazard on plant was found to be mainly due to build-up of soil salinity but not due to that of ESP. With the introduction of a plant type Ac-1, scope on the efficient use of bore well saline water is indicated.