Effect of Nitrogen Forms and Zinc Levels on Yield, Quality of Onion (Allium cepa L.) and Soil Fertility | ||
| Journal of Soil Sciences and Agricultural Engineering | ||
| Article 1, Volume 16, Issue 7, July 2025, Pages 197-208 PDF (840.88 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/jssae.2025.390899.1293 | ||
| Authors | ||
| T. M. El-Zehery* 1; Asmaa F. M. Badawy2; Sara A. El-Shabasy3 | ||
| 1Soil Department, Faculty of Agriculture, Mansoura University, EL-Mansoura, 35516, Egypt | ||
| 2Soil Improvement and Conservation Research Department, Soils, Water and Environment Research Institute (SWERI), Agricultural Research Center (ARC), Giza, Egypt | ||
| 3Soil Chemistry and Physics Research Department, Soil, Water and Environment Research Institute of Agriculture Research Center, Giza,12619, Egypt. | ||
| Abstract | ||
| Nitrogen (N) is an essential nutrient, which often limits crop production. Due to their sparse and shallow root system, the N fertilizer use efficiency in onion production is often low and the risk of nitrate leaching losses is high. Micronutrients play a crucial role in enabling crops and vegetables to achieve optimum productivity, improve storage quality, and overcome physiological disorders. A field experiment was conducted to determine the effect of foliar application of micronutrients on growth and yield of onion (Allium cepa L.) cv. Giza 20 during season of 2022/ 2023. The main factor was the forms of nitrogen fertilizer N1: Urea (NH2)2CO, N2 (NH4)2SO4 and N3 Ca(NO3)2 .The sub main factor treatments consisted of two levels of foliar application of ZnSO4 (1% and 1.5%) that laid out in spilt plot design with three replications. Data on growth, yield, bulb quality and storage life parameters were recorded and analyzed using co-stat. Optimizing N and zn fertilization strategies, particularly through the combined application of urea and 1.5% ZnSO4, can significantly enhance fresh weight (14176.17 and 14200.67 kg/fed) for both season respectively and overall plant productivity. Also urea and foliar application of 1% ZnSO4gave the most effective content of zn (44.5 and 46 ppm) respectively.. The 1% Zn treatment is recommended for maximizing zinc uptake and overall plant health.. The application of zinc, particularly at a rate of 1.5% with calcium nitrate, was proved to enhance soil nitrogen availability(54.22 and 54.77 mg/kg) respectively, potentially improved crop growth and yield. | ||
| Keywords | ||
| Onion; nitrogen source; zinc; yield; quality | ||
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