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Open Access Article
1 - Evaluation Morphological Characteristics and Mineral Nutrients Content of Bread Wheat (Triticum aestivum L.) Affected Soil Application of Nitrogen and Iron Fertilizers
Ezatollah Esfandiari Majid Abdoli Rana TaheriThis research was conducted to evaluate the effect of soil application of nitrogen (N) and iron (Fe) fertilizers on morphological traits and shoot mineral contents of bread wheat via factorial arrangement based on randomized complete block design with four replications. MoreThis research was conducted to evaluate the effect of soil application of nitrogen (N) and iron (Fe) fertilizers on morphological traits and shoot mineral contents of bread wheat via factorial arrangement based on randomized complete block design with four replications. The factors included three level of nitrogen (100, 200 and 400 mg N kg-1 dry soil applied) as Ca(NO3)2 and three rate of Iron (No iron, Fe EDTA and FeSO4, ap-plied at the rate of 10 mg Fe kg-1 soil). The results of the present study show that shoot fresh matter production and plant height was significantly enhanced by increasing N supply at each Fe treatment. So that, application of 400 mg N kg-1 soil has the greatest effect on shoot fresh matter production and plant height. Compared with the control treatment, which did not receive extra N fertilizer, N fertilization at 200 and 400 mg kg-1 were decreased shoot Fe, copper (Cu) and manganese (Mn) concentration as well as shoot zinc (Zn) and Cu content in wheat. The mean shoot Fe concentrations were 246.9, 247.3 and 314.9 mg kg-1 in control, Fe EDTA and FeSO4 treatments, respectively. Also, the effect of FeSO4 on shoot zinc (Zn), Fe and Mn concentrations and also shoot Zn and Cu contents were higher than that of Fe EDTA. In generally, the higher shoot concentration and content of mineral nutrients were observed on the FeSO4 treatment in 100 mg N kg-1 soil and the lower these traits were observed on the treatment of no Fe at all of soil N supply. Application of Fe fertilizer, in combination with optimum N fertilization or other agronomic practices that can increase mineral nutrients in shoot and seed of wheat (especially Zn and Fe), is required to produce improved seed quality for human health. Manuscript profile -
Open Access Article
2 - Assessment Iron Application to Improve Agro-Morphological Traits and Bio-Fortification of Grain Wheat Grown in Different Nitrogen Conditions
Majid Abdoli Ezatollah Esfandiari Rana TaheriBio-fortification of food crops is a cost-effective and sustainable agricultural strategy to decrease malnutrition arising from micronutrients deficiencies. Accordingly, the pot experiments have been conducted to investigate the effectiveness of various foliar-applied i MoreBio-fortification of food crops is a cost-effective and sustainable agricultural strategy to decrease malnutrition arising from micronutrients deficiencies. Accordingly, the pot experiments have been conducted to investigate the effectiveness of various foliar-applied iron (Fe) fertilizers in increasing agro-morphological traits and grain micronutrients concentrations of bread wheat plants under different nitrogen (N) nutrition regimes via factorial experiment based on randomized complete block design with four replications at Maragheh University during 2014-15 growing seasons. The Fe fertilizers treatment included: non application Fe, FeSO4, and Fe EDTA. The applied Fe foliar sprayed with the rate of 0.25% (w/v) at the stem elongation and early milk stages. The rates of soil-applied N consisted: low (100 mg N kg-1 soil), medium (200 mg N kg-1 soil) and high (400 mg N kg-1 soil) until full maturity under greenhouse conditions. Analysis of variance revealed that agro-morphological traits and grain micronutrient concentrations significantly differed among Fe treatments, and significant interactions existed between Fe and N treatment on harvest index and grain Zn, Fe, Cu and Mn concentrations. Application of various foliar Fe fertilizers had either a high positive effect on agro-morphological traits or remained effective on grain Fe concentration. Also, the effect of FeSO4 on all characteristics studied was higher than that of FeEDTA. The results showed that the increasing soil application of N significantly enhanced grain Zn concentrations and decreased grain Cu concentrations of wheat. Generally, application of N and Fe fertilizers represents an important agronomic practice in increasing agronomic traits and grain micronutrients such as Fe and Zn. Therefore, the plant N status deserves special attention in bio-fortification of food crops with Fe. Manuscript profile
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