SHEKHARGOUDA, M.SAJJAN, ASHOK S.2019-09-262019-09-262001-08-03Th-6864http://krishikosh.egranth.ac.in/handle/1/5810129345Okra is an essentially tropical vegetable and cultivated throughout India mainly as a kharif crop, The non-availability of quality seeds of improved varieties is one of the major production constraints in India.To tackle the various production constraints, four field experiments were carried out at Agricultural Research Station, Bagalkot and one laboratory study was initiated in the Dept.of Seed Science and Technology, College of Agriculture, Bijapur during Kharif 1998 and rabi 1998-99. The data revealed that, sowing in month of July 1 coupled with spacing of 60 X 30 cm and 150 kg N per ha gave higher processed seed yield (1139.7kg/ha) during Kharif while in rabi, the November IS'^' sowing the same treatment combination recorded higher seed yield (745.3 kg/ha) with better seed quality parameters. The July 15^^^ sowing coupled with 60 x 30 cm spacing and 125 kg N per ha, followed by same sowing date spacing and at 125 kg N per ha produced higher seedling vigour in Okra. Apical pinching at 20 DAS and picking of two early formed green fruits for vegetable purpose recorded higher processed seed yield (1078.0 and 884.5 kg/ha) during Kharif and rabi respectively. The harvesting of fruits at 40 DAA gave significantly higher seed diameter, seed weight per fruit and 100 seed weight. The seeds extracted from the fruits harvested at 15 DAA failed to germinate in both the seasons. Extraction of seeds from the dried fruits found to be better in seed quality parameters compared to the seed extracted from the fruits immediately after harvest. Among the bio regulators and KII2PO.1, the higher proeessed seed yield was obtained with spraying ofCCC 200 ppm (37.8 and 26.7 %) followed by KH2PO4 and TIBA over control (without spray) during Kharif and rabi season. The KH2PO4 5000 ppm had significantly increased seed germination, root length, shoot length, seedling vigour, field emergence and reduced electrical conductivity values. The seed storage studies indicated that captan (2 g/kg of seed) treated seeds recorded higher germination (85.3 %) followed by sweet flag (84.8 ®o), pongamia (83.2 %) and neem oil (83.2 %). Storing of seeds either in cloth bag or polythene bags (700 gauge) did not show significant difference in germination up to 12 months under ambient condition and maintained germination above the minimum seed cetification standards ( -80 %) for 12 months at Bijapur.ennullThesis