
%0 Journal Article
%A Jagadeeswaran, R. 
%A Singaram, P. 
%A Murugappan, V. 
%T Industrial waste ferrogypsum &#8212; a substitute for gypsum to alleviate sodicity
%J Australian Journal of Experimental Agriculture
%D 2002/04/30
%V 42
%N 3
%P 309-313
%K reclamation, sodic soil
%R https://doi.org/10.1071/EA00114
%U https://www.publish.csiro.au/paper/EA00114 
%X Ferrogypsum is a waste from the effluent treatment plant of the titanium industry located in Tuticorin in south India. It contains gypsum (526.3 g/kg) and iron (102.4 g/kg as Fe2O3). It does not contain any heavy metal at a detectable level. To evaluate ferrogypsum as a soil amendment to alleviate sodicity, a field experiment was conducted on a sodic soil (fine mixed non-calcareous isohyperthermic very deep Vertic Ustropepts) with rice as the test crop. There were 7 treatments consisting of ferrogypsum as well as gypsum used either alone or in combination with farmyard manure or green manure, and a control. The grain and straw yields of rice were significantly increased over the control. Postharvest soil analysis revealed a significant reduction in pH (9.00 to 7.63) and ESP (37 to 14.9) due to soil reclamation with ferrogypsum or gypsum. Thus, ferrogypsum was as effective as gypsum in alleviating sodicity. 
