Abstract
A field experiment was showed to decide the influence of transplanting date and phosphorus level on growth, yield and yield component of onion at Adami Tulu Jedo Kombolcha Woreda during 2017/18 season. The treatments comprised of three transplanting date (42, 49 and 56 days of transplanting date) and phosphorus levels (0, 23, 46, and 69 kg P 2 O 5 ha -1 ). The experiment was laid out in RCBD with four replications. In this study, transplanting at 56 days of transplanting date fertilized with 69 kg P 2 O 5 ha -1 recorded the highest total bulb yield and marketable bulb yield, but no significant difference was showed with that obtained at 46 kg P 2 O 5 ha -1 with the same transplanting date. The economic analysis revealed that the highest net benefit with low cost of production was obtained in response to the application of 46 kg ha -1 and the transplanting age of 56 days. Keywords: bulb yield, Onion, economic analysis, phosphorus, transplanting date. DOI: 10.7176/JBAH/11-1-03 Publication date: January 31 st 2021
Highlights
Onion (Allium cepa L.) belongs to the genus Allium of the family Alliaceae (Hanelt, 1990)
The analysis of variance revealed that plant height, leaf length, maturity date, bulb length and average bulb weight were significantly influenced by the main effect of phosphorus levels and transplanting date
Significantly taller plant height, leaf number per plant, leaf length and early bulb maturity was obtained at the 46 kg ha-1phosphorus rate and transplanting date of 56 days
Summary
Onion (Allium cepa L.) belongs to the genus Allium of the family Alliaceae (Hanelt, 1990). Onion is one of the most important crops and used both as a vegetable and spice (Barzegar et al, 2008). It can be eaten raw in salad, fried, boiled or roasted and used in flavoring soups and canned food products (Gambo et al, 2008). It is highly demanded for its characteristics flavor and pungent taste as condiment, and for its medicinal value (Tyagi and Yadav, 2007)
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