Meteorological Parameters of Tomato (Solanum lycopersicum L.) Under Different Fertigation Levels and Schedules in Polyhouse

An experiment was conducted to study the effect of fertigation levels and schedules on meteorological parameters, yield and correlation studies of summer tomato under polyhouse. 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 was found significantly superior in case of meteorological parameters, yield attributes and fruit yield of tomato. 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 meteorological 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.