Sustainable Modeling and Optimization of Green-Synthesized ZnO Nanoparticles and Humic-Citric Amendments: Enhancing Growth, Nutrient Uptake, and Flowering of Solidago in Saline Soils

Khaled M.A. Ramadan; Hisham Mohamed; Muhammad Munir; Samah M. Youssef; Hossam S. El-Beltagi; Hani S. Saudy; Sallah A. Al Hashedi; Muhammad Naeem Sattar; Ahmed S. Abdelbaky; Ibrahim A. A. Mohamed; Mohamed M. El-Mogy; Wael M. Semida; Taia A. Abd El-Mageed; Omar A. A. I. Al‑Elwany