| publication name | Bio and mineral-N fertilization of Sunflower (Helianthus annuus L.) Grown on Sandy Soil Using 15N Technique. |
|---|---|
| Authors | M.A. Hekal; A.A. Abdel-Salam; S.M. Soliman; Y.G.M. Galal; A.A. Moursy; W.R. Zahra |
| year | 2021 |
| keywords | N and Biofertilization; Fertilizer N recovery; 15N-Isotope dilution; Sunflower. |
| journal | Annals of Agricultural Sciences, Moshtohor, 59(4), 1077 – 1082 |
| volume | 59 |
| issue | 4 |
| pages | 1077-1082 |
| publisher | Faculty Of Agriculture, Benha University |
| Local/International | Local |
| Paper Link | https://journals.ekb.eg/article_215747.html |
| Full paper | download |
| Supplementary materials | Not Available |
Abstract
Biofertilization using Azotobacter chroococcum (B1), Azospirillum brasilense (B2) and Bacillus megaterium (B3), were assessed vs. Mineral-N fertilization using ammonium sulphate with 2% 15N atom excess on sunflower grown on a virgin sand during 2014 summer season. Plants grew for 45 days. The highest plant height (64.87 cm) with an increase about 93.6% over the non-fertilized was given by the Azospirillum bacteria combined with the high N rate (N3B2). Total chlorophyll ranged from 17.8% by (N2B1) to 34.9% by (N3B0). The highest dry matter yield of 44.20 kg ha-1 was by N3B0. The highest N uptake was given by plants receiving high N without biofertilization (N3B0) with an increase 141.4%. The highest fertilizer N recovery of 18.45% was by high N without biofertilization (N3B0) with an increase 99.7%.