  This paper details on the discovery of 21 pulsars using the Giant Metrewave
Radio Telescope (GMRT) from targeted (Fermi directed search) and blind surveys
(GMRT High Resolution Southern Sky - GHRSS) and results from the follow up
studies. We discovered seven millisecond pulsars (MSPs) in the Fermi directed
searches, which are the first Galactic MSPs discovered with the GMRT. We have
discovered 13 pulsars (including a MSP and two mildly recycled pulsars) with
the GHRSS survey, which is an off-Galactic-plane survey at 322 MHz with
complementary target sky (declination range -40 deg to -54 deg) to other
ongoing low-frequency surveys by GBT and LOFAR. The simultaneous time-domain
and imaging study for localising pulsars and transients and efficient candidate
investigation with machine learning are some of the features of the GHRSS
survey, which are also finding application in the SKA design methodology.
