Research Article
Effect of NPS and Zinc Fertilizer Rates on Growth and Yield of Onion (Allium cepa L.) at Shewa Robit, North Shewa, Ethiopia
Table 1
Physicochemical characteristics of soil in the experimental site before planting.
| Soil properties | Value | Rating | Source |
| pH (1 : 2.5) | 7.6 | Slightly alkaline | [23] | Electrical conductivity (d·S·m−1) | 0.44 | Nonsaline | [24] | Organic matter (%) | 0.15 | Very low | [25] | Total nitrogen (%) | 0.03 | Low | [24] | Exchangeable K (c mol(+)/kg) | 1.5 | Sufficient | [26] | Available P (ppm) | 15 | Marginal | [27] | Available S (ppm) | 23 | Medium | [28] | Zn (ppm) | 0.48 | Low | [29] | Particle size distribution | | | | Sand (%) | 40.2 | | | Silt (%) | 33.07 | | | Clay (%) | 26.67 | | | Textural class | Sandy loam | | [24] |
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