Effects of nano Fe/SiO2 fertilizers on germination and growth of barley and maize |
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| Authors: | Marjan Najafi Disfani Mohammad Zaman Kassaee Amirhossein Maghari |
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| Institution: | 1. Faculty of Biosciences &2. Medical Engineering, University of Teknologi Malaysia(UTM), Johore Bahru, Malaysia;3. Department of Chemistry, Tarbiat Modares University, Tehran, Iran;4. New Hearing Technologies Research Center, Baqiyatallah University of Medical Science, Tehran, Iran |
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| Abstract: | Iron (Fe) nanoparticles (NPs), with 30–40 nm diameter, were stabilized on sand. The resulting synthesized Fe/SiO2 NPs, with different Fe contents (0–25 mg kg?1) were employed as fertilizers in probing the mean germination time (MGT), growth and dry matter of barley and maize and their comparison with common Fe/SiO2 in a completely randomized design (CRD) experiment. The results showed that our fertilizers had significant effects on MGT, with the lowest of 0.58 day for barley and 0.79 day for maize; at 15 and 5 mg kg?1 nano Fe/SiO2, respectively. Application of 15 mg kg?1 of nano Fe/SiO2 increased the shoot length: 8.25% and 20.8% for barley and maize, respectively. However, the concentration of 25 mg kg?1 had a negative impact on shoot length in barley. Increasing the concentrations of both nano and common Fe/SiO2 particles, increased the root lengths in both plants, however this increase was higher with the application of nano Fe/SiO2. Likewise, seedling length enlarged with the concentration increase of both Fe/SiO2 particles and was more pronounced with nano Fe/SiO2. The application of nano Fe/SiO2 was more effective compared with the common Fe/SiO2 in encouraging barley and maize growth. The positive impact was higher in maize than barley. |
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| Keywords: | Barley maize zerovalent iron nanoparticles stabilized on sand (Fe/SiO2) common Fe/SiO2 MGT growth |
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