Salama Dina M, Khater Mahmoud Ahmed, Abd El-Aziz Mahmoud E
Vegetable Research Department, National Research Centre, 33 El Bohouth St., Dokki, Giza, P.O. 12622, Egypt.
Botany Department, National Research Centre, 33 El Bohouth St., Dokki, Giza, P.O. 12622, Egypt.
Heliyon. 2024 May 22;10(11):e31635. doi: 10.1016/j.heliyon.2024.e31635. eCollection 2024 Jun 15.
Potassium is an important macro-fertilizer for plant growth but can be lost from the soil after application via irrigation. Slow-release nano-fertilizers can achieve sustainable crop cultivation and production, so this study evaluated the influence of potassium nanoparticles (K-NPs) with various concentrations (0, 50, 100, and 200 mg/l) on onion development, production, pigments, chemical content, and DNA fingerprint during two sequential agriculture seasons in 2021 and 2022 at a private farm in Zagazig, Sharkia Governorate, Egypt. Spraying onion plants with K-NPs (200 mg/l) significantly improved the vegetative characteristics of onion plant growth and production, as well as increasing the plant pigments and the content of carbohydrate, oil, total indole, and phosphorus in onion bulbs. Similarly, 50 mg/l of K-NPs considerably increased the content of nitrogen, potassium, protein, antioxidant activity, and phenols in the onion bulbs. The content of total flavonoids and anthocyanin was increased with 100 mg/l of K-NPs. In conclusion, the foliar application of K-NPs improves the onion plant yield and quality and can achieve agricultural sustainability.
钾是植物生长所需的重要大量元素肥料，但施用后可能会通过灌溉从土壤中流失。缓释纳米肥料能够实现作物的可持续种植与生产，因此本研究于2021年和2022年在埃及谢克希亚省扎加齐格的一个私人农场，连续两个农业季节评估了不同浓度（0、50、100和200毫克/升）的钾纳米颗粒（K-NPs）对洋葱生长发育、产量、色素、化学成分及DNA指纹图谱的影响。用200毫克/升的K-NPs喷施洋葱植株，显著改善了洋葱植株生长和产量的营养特性，同时还增加了植株色素以及洋葱鳞茎中碳水化合物、油脂、总吲哚和磷的含量。同样，50毫克/升的K-NPs显著增加了洋葱鳞茎中氮、钾、蛋白质、抗氧化活性和酚类的含量。100毫克/升的K-NPs使总黄酮和花青素含量增加。总之，叶面喷施K-NPs可提高洋葱产量和品质，实现农业可持续发展。
