Agricultural Science Digest

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Agricultural Science Digest, volume 41 special issue (april 2021) : 181-185

Varietal Screening of Short Day Onions (Allium cepa L.) under Coastal Saline Area

S. Rahaman, J. Mandal, D. Saha, S. Mohanta
1Department of Horticulture and Post Harvest Technology, Institute of Agriculture, Visva-Bharati, Sriniketan-731 236, West Bengal, India.
Cite article:- Rahaman S., Mandal J., Saha D., Mohanta S. (2020). Varietal Screening of Short Day Onions (Allium cepa L.) under Coastal Saline Area. Agricultural Science Digest. 41(2021): 181-185. doi: 10.18805/ag.D-5210.
Background: Onion is an economically important bulbous vegetable crop widely cultivated in India. Onion produced in West Bengal can only partially meet up its domestic need and thus extremely depends upon supply from other Indian States during lean period. Bringing more area under cultivation with improved varieties can boost the production and productivity of onion in West Bengal. The present situation leads to explore the scope of onion cultivation in non-traditional area. The objective of the study was to know the production and storage performance of onion varieties under Coastal Saline Zone of West Bengal, with the greater aim to explore this non-traditional onion growing area in future.
Methods: Sixteen short day onion varieties were evaluated in Rabi 2014-15 and 2015-16 in Ramkrishna Ashram KVK, Nimpith following Randomized Block Design with three replications. Eight field parameters, three laboratory parameters and four storage parameters were studied.  
Result: Enough variation was noticed for different growth, yield, quality and storage attributes among the onion cultivars. The bulb yield, bulb weight, bulb equatorial and polar diameter was ranged from 62.8 to 124.5q/ha, 38.9 to 78.5 g, 32.5 to 47.6 cm and 34.7 to 47.3 cm respectively. The average TSS and pyruvic acid content was noted 12.7 ºBrix and 11.2 µmol/g respectively. After six month of storage in ambient condition, average PLW, rotting, sprouting and total losses was found 33.6%, 24.8%, 1.3% and 59.7% respectively. Among the varieties, Sukhsagar followed by Arka Niketan registered minimum storage losses of 20% and 35.1% at the end of storage period. Onion variety, Sukhsagar, Agrifound Light Red, Bhima Shakti, NHRDF Red-2, Pusa white Flat and NHRDF Red-3 were identified as top performers.
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