KHAIRPUR: The soil of Qambar Shahdadkot is one of the finest and most fertile lands of Sindh, and the main source of its salinity is the RBOD in the region due to its seepage, according to a research paper. “The base of RBOD-3 should be cemented as designed in PC-I,” said Noor Hassan Chandio who presented his research on impacts of irrigation water on soil fertility in Qambar Shahdadkot district in a seminar held in the Faculty of Physical Sciences of the Shah Abdul Latif University (SALU) here. The session was presided over by Prof Dr Mumtaz Hussain Mahar, dean of the Faculty of Physical Sciences. Noor Chandio is doing his research under the supervision of Prof Dr Qasid Hussain Mallah and co-supervision of Prof Dr Mushahid Anwar in the Department of Geography. The researcher said that the main objectives of his research were to examine the problems according to the geographical evaluation of irrigation water and its impact on fertile soil in the Qambar Shahdadkot district and impact of right bank outfall drains water on soil. During another seminar – On (a,d)-Vertex-Anti-magic Total Labeling of Disconnected Cycles mC – Nazim Hussain Hajano also delivered his paper at the Department of Mathematics. The event was arranged under the supervision of Prof Dr Ali Dino Jumani, chairman of the Department of Mathematics. Abdul Naeem Kalhoro delivered his MS seminar in the Department of Mathematics on “A Two Connected Graph with Gallai’s Property” under the supervision of Prof Dr Ali Dino Jumani.