The Effect of Nitrogen Fertilizer Rates and Intra-row Spacing on Yield Components and Qualities of Shallot (Allium ascalonium L.) at Mulo District, Ethiopia
Year: 2025
Type: article
Abstract: The leafy vegetable shallot (Allium ascalonium L.) is grown in many tropical locations, including Ethiopia. Due to insufficient soil fertility, a lack of better planting materials, improper plant density, and a lack of agronomy research, the study area's shallot yield is low. Thus, this experiment was carried out during the 2021–2022 off-season in Mulo District, Oromia Regional State, Ethiopia. The primary goal of this study was to assess intra-row spacing and nitrogen fertilizer rates affected shallot growth, yield, and quality. Four intra-row spacings (5, 10, 15, and 20 cm) and four nitrogen fertilizer rates (0, 50, 100, and 150 kg N ha⁻¹) were set up in a 4 × 4 factorial experiment utilizing a randomized full block design with three replications. Data were collected on yield components, yield, and quality parameters of shallots. Both the main effects and their interaction exhibited a substantial (p < 0.05) impact on yield and quality parameters, according to analysis of variance. The maximum marketable and total bulb yields were obtained from the interaction of 150 kg N ha⁻¹ nitrogen fertilizer with 15 cm intra-row spacing, while the lowest yields 16.79tha-1 were recorded from the zero kg N and at the narrowest spacing. Therefore, the use of 150 kg N ha⁻¹ nitrogen fertilizer with 15 cm intra-row spacing can be recommended for improved shallot production under the conditions of the study area. However, further studies across different seasons would be to validate these findings.
Language: English
Subfield: Plant Science
Domain: Life Sciences
SDG: Zero hunger
Open Access status: green
OpenAlex ID: W7117870941
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