Early growth of corn seedlings after seed priming with magnetite nanoparticles synthetised in easy way.

Nanoparticle (NP) use is becoming important alternative in different branches of science such as in agriculture, used as new source of fertiliser. In this study, it was tested iron (Fe) NP, applied as corn seed priming. In order to evaluate the early growth and development of the corn seedling a factorial experiment (5 × 3) was performed in a complete random way design with 4 replications. One of the factors were concentrations of (0, 20, 40, 80, 160 mg L⁻¹) related to iron inside and the factor with three levels were sources (Fe₃O₄ NP, Fe₃O₄ bulk and FeCl₃). 50 sterile seeds were the plot composition, which were soaked in the different Fe concentration solution containing a total volume of 200 mL for 8 h. Germination and biometric development were evaluated. Fe NPs promoted beneficial responses for seedling growth compared to other Fe sources tested here. It was realised that Fe₃O₄ NP concentration beneficial effects was lower compared to the other tested sources. Particle size had an important assignment in the bioavailability. The plant response reached in this research indicated iron NPs can consist efficiency for corn seed priming when applied between 50 and 70 mg L⁻¹ concentration based on interpolation. [ABSTRACT FROM AUTHOR]