Effect of Phosphorus and Zinc Fertilizer Application to Increasing the Quality of Nourishment in Winter Wheat

Abstract

Balanced fertilization is one of the most important factors for increasing yield and improving the quality of wheat crop. In human nutrition PA / Zn ratio is an important factor and nutrients absorption will be reduced by high levels of PA / Zn ratio in diet. Effect of Phosphorus and Zinc fertilizer application to increasing the quality of nourishment in winter wheat a field experiment was carried out from 2008 to 2009 in researching Karaj region. In a factorial experiment with a randomized complete block design and three replicates per treatment, tree levels of P (0, 100 and 200 kg.ha -1 as DAP), two levels of Zn (0 and 40 kg.ha -1 as zinc sulfate) and 300 kg.ha -1 urea fertilizer added to the trial plots. All other management practices were done in conventional methods. The seeds were Pishtaz variety that was planted. The Anova results showed that the effect of different rates of P and Zn on chemical characteristic of wheat grain was significant (P < 0.05). P and Zn increased the P and Zn grain concentration also increased grain protein and total grain nitrogen. The interactive effect of P and Zn on above characteristic was significant (P < 0.05) the best treatment in this study was obtained in Zn1P1. The effect of P on the PA/Zn ratio of grain was significant at 5% level and increased it (87.1%) but Zn application significantly (P < 0.05). As far the results of this study reveal that consumption of these two fertilizers it’s significant on flour pH and acidity. For reduction of PA / Zn ratios balanced and have a good quality wheat flour, fertilization especially Zn application and apply P fertilizers only on the basis of soil testing are necessary.