Under polyhouse environments, the study was carried out to evaluate a number growth phases of the tomato variety Heem Sohna (Solanum lycopersicum L) in relation to the NPK fertigation levels, irrigation levels, and mulching during the rabi growing season. During 2018- 2019, field trials were set up in naturally ventilated polyhouses. The tomato (Heem Sohna) produced the highest fresh fruit yield (153.37 t ha-1) (15.34 kgm-2) during Rabi 2018–19, when 100 RDF of the recommended fertilizer dose (150-60–80 kg N–P2O5–K2O ha–1) was applied at irrigation level I0.8 without any mulch. This was followed by the application of 150 RDF at irrigation level I0.8 with mulch (146.40 t ha-1, 14.64 kg m-2). Under the poly house, there was no reaction to the mulch (25 microns, dual-colored, black and silver)