STUDIES ON THE EFFECT OF ZINC NANOPARTICLES SEED TREATMENT ON QUALITY BULB PRODUCTION IN ONION
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Date
2023-10-23
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UHF Nauni
Abstract
The present investigation titled, “Studies on the Effect of Zinc Nanoparticles Seed Treatment on Quality Bulb Production in Onion” was carried out at laboratory and experimental farm of Department of Seed Science and Technology, Dr YS Parmar University of Horticulture and Forestry, Nauni, Solan (HP)-173 230 during 2022-2023. Laboratory studies were conducted in Completely Randomized Design (CRD) with four replications and field experiment was laid out in Randomized Complete Block Design (RCBD) with 14 treatments replicated thrice. Out of the 14 treatments, 9 treatments comprised of seed priming with zinc nanoparticles @ 50ppm, 100 ppm and 150 ppm for 12, 24 and 36 hours, 3 treatments comprised of seed coating with zinc nanoparticles @ 50ppm, 100 ppm and 150 ppm, 1 treatment comprised of hydropriming for 12 hours in addition to control. Although, maximum values for germination percentage (87.73 %), seedling length (14.13 cm), seedling dry weight (1.85 mg), seedling vigour index-I (1274.24), seedling vigour index-II (162.30), speed of germination (24.25), plant height at 30 and 60 days after transplanting (14.53, 34.53 respectively), number of leaves at 60 days after transplanting (6.67), polar diameter (53.67 mm), equatorial diameter (57.90 mm), bulb size index (3108.29 mm2), number of bulbs per plot (69), bulb weight (74.50 g), bulb yield per plot (5.29 kg), bulb yield per hectare (423.03), benefit: cost ratio (2.12 :1) and minimum value for EC (109.50 μS/cm), days from transplanting to harvest (130.00), neck thickness (8.70 mm), early bolters (0.00 %), disease incidence (1 %) were recorded in T9 (seed priming with ZnO nanoparticles @ 150 ppm for 36 hours) which was closely followed by T8 (seed priming with ZnO nanoparticles @ 150 ppm for 24 hours). Therefore, T9 (seed priming with ZnO nanoparticles @ 150 ppm for 36 hours) can be suggested for commercial bulb production of onion after multi location testing.
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STUDIES ON THE EFFECT OF ZINC NANOPARTICLES SEED TREATMENT ON QUALITY BULB PRODUCTION IN ONION