A two years of experiment was conducted to study the effect of fertigation levels and schedules on growth, yield, physiological parameters and net monetary returns of summer tomato under polyhouse condition. The treatments include 3 fertigation levels (F1- 60% of RDF, F2- 80% of RDF, and F3- 100% of RDF) and 3 fertigation schedules (S1- 6 equal splits of RD of NPK at every 18 days interval, S2- 9 equal splits of RD of NPK at every 12 days interval, S3- 12 equal splits of RD of NPK at every 9 days interval). The results indicated that fertigation of 100% RD of NPK in 12 equal splits at every 9 days interval up to 120 DAT recorded significantly maximum growth, yield attributes and fruit yield, physiological parameters and net monetary returns unit-1 of polyhouse (784 m2). However it was at par with 80 % RD of NPK in 12 equal splits at every 9 days interval up to 120 DAT. Positive and highly significant correlation was observed between growth and yield attributes viz., leaf area, number of fruits plant-1, average fruit weight and fruit weight plant-1 and physiological parameters viz., photosynthetic rate, CO2 concentration, stomatal conductance, transpiration rate, leaf water potential and total chlorophyll content. Whereas negative correlation was observed between yield attributes viz., number of fruits plant-1, average fruit weight and fruit weight plant-1 and stomatal resistance and leaf temperature at 150 DAT during both the years.