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Effect of calcium nitrate treatments on seed germination and seedling vigour of papaya (Carica papaya L) Maneesha SR*, Devi S Priya ICAR-Central Coastal Agricultural Research Institute, Ela, 403402, Goa, India *Email for correspondence: maneesha.sr@icar.gov.in
Online published on 21 August, 2018. Abstract Seed treatment is an effective method to enhance seed germination and seedlings vigour in papaya. An experiment was conducted in which local open pollinated papaya seeds were soaked for 24 hours in CaNO3 and KNO3 at different levels (1, 1.5 and 2%) along with control (water). The minimum days taken to germination (4.33) and maximum fresh(1.36g)and dry(0.174g)biomass were recorded under 1 per cent CaNO3 treatment. At 15 days after sowing (DAS) highest germination (87.80%) was also recorded in the same treatment which was at par with CaNO3 (2%) (66.03%). Three varieties of papaya (Arka Surya, Arka Prabhat and Madhu Bindhu) were treated with CaNO3 at different levels (0.5, 1 and 1.5%) along with control. Minimum days taken to germination were recorded in Arka Prabhat (4.75) and germination was maximum in case of Madhu Bindu (78.99%). The experiment proved the significant effect of calcium ions at low concentration on the papaya seed germination and seedling vigour. Top Keywords Papaya, seeds, germination, seedling vigour, calcium nitrate. Top | |
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