Sulphur adsorption by soil after differential fertilization for twenty-two years with NPK under a continuous maize-wheat cropping system

Department of Soils, Punjab Agricultural University, Ludhiana, Punjab, 141004

*Corresponding author: (E-mail: sharma_kn@rediffmail.com)

¹Present Address: Punjab Remote Sensing Centre, Punjab Agricultural University Campus, Ludhiana, 141 004