Effect of variety and seed rate on yield and quality of onion (Allium cepa L.) Sets

Abstract

A field study was carried out at Spices Research Sub-Centre, Bangladesh Agricultural Research Institute, Faridpur in 2021-2022. The experiment was conducted to find out suitable variety and optimum seed rate for producing onion sets. The treatment consisted of four varieties viz. BARI Piaz-1, BARI Piaz-4, BARI Piaz-6 and LalTeer king and six seeding rate like 2g ², 4g , 6g , 8g², 10g seeds/m² and transplanting of seedlings densely (average 240 seedlings/m²). The trial was laid out in a randomized complete block design with three replications. The result revealed that significant differences were found in all studied characters due to variety but exception, seed rate and their combined effect. The variety BARI Piaz-1 had the highest optimum sets (60.64%). The maximum bolting were counted from BARI Piaz-1 (2.96%) followed by BARI Piaz-6 (2.33%). LalTeer King produced the highest set yield (13.57t/ha). Onion sets were delay matured (154 days) in transplanting method. Seeding 10g/m² took the lowest time to mature of onion sets (130 days). The highest optimum set was obtained from seeding 6g/m² (65.74%). The set yield was increased with the increase in seeding rate up to 8g/m² and thereafter decreased. Finally, onion var. BARI Piaz-4 and BARI Piaz-6 are suitable for producing optimum onion sets with good yield of onion at 4-6g/m² seed rate.

Bangladesh J. Agril. Res. 48(4): 501-512, December 2023