A three-year-field trial on Vertic Ustochrepts showed that application of gypsum reduced the soil pH and increased the electrolyte conductivity. Flyash and pressmud did not have any effect on soil pH and EC. The organic carbon content significantly increased due to pressmud application. Application of all the three materials enhanced the infiltration rate. The water stable aggregates were also significantly higher in the amended soils and pressmud was found to be the best. All these materials resulted in significantly higher grain and straw yields of sorghum crop. The cost-benefit ratio analysis indicated tket pressmud was slightly better than flyash, though, all the three when applied alone were superior to control.
Pressmud, flyash, gypsum, amendments, soil properties
