Experiment was conducted to find out the effect of growing condition, spacing and calcium sprays on seed quality parameters of tomato in National Seed Unit, UAS, Dharwad. Experiment consist of two growing conditions viz., open field and naturally ventilated polyhouse condition with three levels of spacing viz., 60 x 45, 60 x 60 and 60 x 75 cm and four stages of calcium sprays viz. control, weekly, fortnightly and monthly spray. Between two growing condition, polyhouse grown condition recorded significantly higher values for seed quality parameters such as 1000 seed weight (2.57 g), seed germination (87.91%), root length (3.74 cm), shoot length (9.35 cm), dry weight of seedlings (15.22 mg) and seedling vigour index (1149) compared to open field condition. 60 x 60 cm spacing recorded significantly higher values for 1000 seed weight (2.53 g), seed germination (88.04%), root length (3.81 cm), shoot length (9.60 cm), dry weight of seedlings (15.95 mg) and seedling vigour index (1160) compared to S1 and S3. The fortnightly calcium spray recorded consistently higher values for 1000 seed weight (2.53 g), seed germination (87.14%), root length (3.82 cm), shoot length (9.50 cm), dry weight of seedlings (15.98 mg) and seedling vigour index (1142).
