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Table 1 The observed positive effects of ZnO NPs on plants

From: Nanoparticles based on essential metals and their phytotoxicity

Plant Particle size (nm) Particle concentration Comment Observed effect References
Vigna radiata 22.4 ± 1.8 10 mg L−1 NPs were synthesized by soil fungi Increase in stem height and root length. Increase in phosphorus mobilizing enzymes and phosphorus uptake by 10.8% [65]
Zea mays, Glycine max, Cajanas cajan, Abelmoschus esculentus <100 25 or 50 mg Zn g−1 seed Seeds were coated with ZnO NPs Improved germination [47]
Coated seeds 93–100%
Uncoated seeds 80%
Triticum aestivum 30 100 mM Zn Wheat plants were inoculated with Fusarium graminearum Reduction in number of CFU of F. graminearum [66]