Effect of Wheat (Triticum aestivum L.) and Bean (Phaseolus vulgaris L.) Residues and Zinc Sulfate Application on Yield and some Chemical Characteristics of Wheat Grain

In order to evaluate the effects of wheat (Triticum aestivum L.) and bean (Phaseolus vulgaris L.) residues with the application of zinc sulfate farms on zinc, protein, phytic acid concentration in wheat grain and grain yield of wheat, an experiment was conducted in the growing season of 2012-2013 in Dehaghan city farms in Isfahan through a complete randomized block design in three replications with six treatments (control, zinc sulfate, wheat residue, bean residue, wheat residue + zinc sulfate and bean residue + zinc sulfate). Results of ANOVA showed there were significant difference in the effect of experimental treatments on yield, zinc and phytic acid concentration, phytic acid to zinc molar ratio and protein content of wheat grain. The results showed that the highest yield (3.8 ton ha-1), protein (10.3%) and grain zinc concentration (36mg.kg-1) was related to bean residues + zinc sulfate treatment and the lowest yield was belonged to control treatment (2.8ton.ha-1), (7.54%) and (26mg.kg-1), respectively. The plant residues application, particularly bean residues + zinc sulfate reduced the molar ratio of phytic acid to zinc compared to the control (36%). Amongst the plant residues, bean residues had the lowest value of carbon to nitrogen ratio (15.4). Finally, in the current research conditions, bean residues + zinc sulfate treatment was higher compared to the other treatments having considerable in this experiment with the highest zinc, protein, phytic acid in wheat grain, phytic acid to zinc molar ratio and yield.