
TY  - JOUR
A1  - Jagadeeswaran, R. 
A1  - Singaram, P. 
A1  - Murugappan, V. 
T1  - Industrial waste ferrogypsum &#8212; a substitute for gypsum to alleviate sodicity
JF  - Australian Journal of Experimental Agriculture
JO  - Aust. J. Exp. Agric.
Y1  - 2002
VL  - 42
IS  - 3
SP  - 309
EP  - 313
KW  - reclamation, sodic soil
UR  - https://doi.org/10.1071/EA00114 
N2  - 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. 
ER  -

