The Effectiveness of Foliar Applications of Synthesized Zinc-Amino Acid Chelates and ZnSO4 on the Nutritional Status of Wheat Plant Cultivated in a Soil Contaminated with Cd and Diesel Oil

Document Type : Original Article


1 Department of Soil Science, Arak Branch, Islamic Azad University, Arak, Iran,

2 Department of Agronomy and Plant Breeding, Faculty of Agriculture, Isfahan University of Technology, Isfahan, Iran



This study was done to evaluate the effectiveness of foliar applications of synthesized zinc-amino acid chelates and ZnSO4 on the nutritional status of wheat plant in a soil contaminated with Cd and diesel oil.
Materials and Methods: 
Treatments were consist of foliar application of Zn amino acid chelate (Zn(Arg)2 and (Zn(His)2) and ZnSO4 at the rate of 0, 0.1, and 0.2% (W/V) in the soil co-contaminated with Cd (0, 10, and 20 mg Cd/kg soil) and diesel oil (0 and 8% [W/W]).
Application of Zn amino acid chelates had a significant effect on increasing plant nutrient status, however, soil pollution with Cd and diesel oil had an adverse effect. Based on the results of this study, application of 0.2% (W/V) (Zn(Arg)2 and (Zn(His)2) significantly increased the grain Zn concentration of the plants grown in the soil polluted with Cd (10 mg Cd/kg soil) and diesel oil (8% [W/W]) by 11.3% and 10.1%, respectively. For co-contaminated soil with Cd and diesel oil, it was increased by 9.8%. Soil microbial respiration has affected by Zn amino acid chelate and soil pollution. According to our results, application of 0.2% (W/V) Zn(Arg)2 chelate significantly increased the soil microbial respiration in the soil polluted with Cd (10 mg Cd/kg soil) and diesel oil (8% [W/W]) by 12.5% and 13.1%, respectively.
Zn amino acid chelate had a significant effect in increasing plant nutrient status such as Zn and Fe that is a positive point environmental study.


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