Study on Salinity Reduction and Changes in Chemical Properties in Saline Soil

Abstract

Background: The aim of the work was to evaluate the effects of different treatments viz manure as organic amendments, gypsum as amendments and nitrogen resources on salinity of saline soil. Methods: The research was conducted using a 2×4×3 factorial design. The first factor was manure (non-manure and manure), the second factor was the addition of gypsum, @ 0, 0.75, 1.5 and 3.0 ton ha-1) and third factor was source of nitrogen i.e. without N, nitrate and ammonium fertilizer. These three factors were repeated 3 times. Data were analyzed using one-way analysis of variance followed by the Duncan multiple range test for comparisons among means with a significance level of 5%. Result: This research markedly reduced pH, EC, Na and markedly increased sulfate, K content. But CEC, SAR, ESP, total N, nitrate, ammonium were not significant. The highest Ca content was in the 1.5 tons ha-1 gypsum treatment and non manure. Meanwhile, in the interaction between gypsum and N resources, the highest Mg content was 3 tons ha-1 of gypsum and nitrate.