Investigating the effects of various magnetic field exposure intensities and periods in pigweed (Amaranthus retroflexus) seeds

DOI: 10.18805/IJARe.A-348    | Article Id: A-348 | Page : 233-236
Citation :- Investigating the effects of various magnetic field exposure intensities and periods in pigweed (Amaranthus retroflexus) seeds.Indian Journal Of Agricultural Research.2019.(53):233-236
Naser Abdiazar, Hossein Zahedi and Younes Sharghi
Address : Department of Agriculture, Islamshahr Branch, Islamic Azad University, Islamshahr, Iran.
Submitted Date : 10-03-2018
Accepted Date : 5-12-2018


The present study was conducted to investigate the effects of electromagnetic field on germination characteristics of pigweed (Amaranthus retroflexus). It was conducted in factorial randomized complete design with three replications in Tarbiat modares University, during 2013-14. Pigweed seeds were subjected to three magnetic field levels created by magnets with 4000G, 5000G and 6000G for exposure times of 5, 35 and 65 minutes followed by which the seeds were placed in petri dishes and transferred on germinator. The germination characteristics, germination percentage, time to 50% germination, germination evenness and the rate of germination  were recorded .The sprouts were bisected in four-leaf stage and they were evaluated in their morphologic characteristics and the amount of protein and â-amylase enzymatic activity. Results indicated that the mutual effect of the magnetic field exposure duration and intensity was found significant on all the examined traits in pigweed. The highest and lowest germination in pigweed seeds were recorded with 5000G-5minutes and 6000G-65minutes treatments, respectively. The treatments in which the weed seeds were exposed to 5000G intensity for 65minutes, 6000G for 35minutes produced the highest and the lowest amounts of protein, respectively. Based on the experiment results the magnetic field exposure intensity and duration influence the germination characteristics, protein content and â-amylase enzymatic activity rate, this can be a promised method in controlling the weeds in farms.


â-amylase activity Germination percentage Magnetic field Protein Rate of germination.


  1. Aksenov, S.I., Bulychev, A.A., Grunina, T.Y., Turovetskii, V.B. (1996). Mechanisms of the action of a low-frequency magnetic field on the initial stages of germination of wheat seeds. Biophysics, 41(4): 931-937.
  2. Aktar, W., Sengupta, D., Chowdhury, A. (2009). Impact of pesticides use in agriculture: their benefits and hazards. Interdisciplinary Toxicology, 2(1): 1-12.
  3. Bhatnagar, D., and Deb, A.R. (1977). Some aspects of re germination exposure of wheat seeds to magnetic field: germination and early growth. Seed Research, 5: 129-137.
  4. Bradford, M.M. (1976). A rapid and sensitive methodfor qantitation ofmicrogram quantities of protein utilizing the principle of protein-    dye binding. Analytical Biochemistry, 72: 248-254. 
  5. Das P.K., and Bhattacharyya, S. (2006). A comprehensive analysis of conduction-controlled rewetting by the Heat Balance Integral Method. International Journal of Heat and Mass Transfer, 49: 4978-4986.
  6. Dukiæ, V., Miladinov, Z., Dozet, G., Cvijanoviæ, M., Tatiæ, M., Miladinoviæ, J., and Baleševiæ-Tubiæ, S. (2017). Pulsed electromagnetic field – a cultivation practice used to increase soybean seed germination and yield. Zemdirbyste-Agriculture, 104(4): 345–352.
  7. Erayman, H.M. (2003). Effect of shocking with high voltage electrical current on important agronomical and technological properties of five cotton (G. hirsutum L.) cultivars under Kahramanmaras conditions. M.Sc thesis, University of KahramanmarasSutcu Imam, Institute of Natural and Applied Sciences, Department of Field crops, Turkey. 
  8. Jia Ming, Y. (1988). Effects of high-voltage electrostatic field on growth in plants, Proceedings of the International Conference on Modern Electrostatics, Beijing, China 140-143.
  9. Matheson, P.R., and Seabourn, B.W. (1983). A new procedure for specific determination of â amylase in cereals. Journal of Agricultural and Food Chemistry, 31:1322-1326.
  10. Negishi, Y., Hashimoto, A., Tsushima, M., Dobrota, C., Yamashita, M., Nakamura, T.(1999). Growth of pea epicotyl in low magnetic field implication for space research. Advances in Space Research, 23: 2029-2032.
  11. Pietruszewski, S. (1993). Effects of magnetic seed treatment on yield of wheat. Seed Science Technology, 21: 621-626.
  12. Reina, F.G., Pascual, L.A., Fundora, L.A. (2001). Influence of a stationary magnetic field on water relations in lettuce seeds. Part II. Experimental results. Bioelectromagnetics, 22: 596-602.
  13. Rochalska, M. (2002).Magnetic field method of seeds vigor estimation. (In Polish). Acta Agrophysica, 62:103-111.
  14. Ruzmi, R., Ahmad-Hamdani, M. S., and Bakar, B. B. (2017). Prevalence of herbicide-resistant weed species in Malaysian rice fields: A review. Weed Biology and Management, 17(1): 3-16.
  15. Sahebjamei, H., Abdolmaleki, P., and Ghanati, F. (2007). Effects of static magnetic field on the antioxidant enzymes activities of suspension-cultured tobacco cells. Bioelectromagnetics, 28: 42-47.
  16. Soltani, F., Kashi, A., and Arghavani, M. (2006). Effect of magnetic field on Ocimum basilicum seed germination and seedling growth. Acta Horticulturae, 723: 279-282. 
  17. Vasighe Shamsabad, A. (2011). The effect of magnetic field on the germination and antioxidant enzymes safflower and its weed. Master’s thesis. Tarbiat Modares University. pp. 110.
  18. Vasilevski, G. (2003). Perspectives of the application of biophysical methods in sustainable agriculture. Bulgarian Journal of Plant Physiology, Special Issue, 179-186.
  19. Wang, H.Y., Zeng, X.B., Guo, S.Y., Li, Z.T. (2008). Effects of magnetic field on the antioxidant defense system of recirculation-    cultured Chlorella vulgaris. Bioelectromagnetics, 29:39-46.

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