Bibliographic Details
| Title: |
Effectiveness of exogenously applied chelated micronutrients for biofortification of wheat. |
| Authors: |
Tipu, Muhammad Imran, Akhtar, Muhammad, Sarwar, Nadeem, Hussain, Saddam |
| Source: |
Arabian Journal of Geosciences; Mar2022, Vol. 15 Issue 5, p1-12, 12p |
| Abstract: |
Malnutrition of zinc (Zn) and iron (Fe) occurs worldwide, particularly in areas having alkaline calcareous soils with low micronutrients availability due to high soil pH and rapid fixation. The current investigation was conducted to identify the effective Zn source, mode of application, and Fe-synergism for improving yield parameters and grain accumulation in wheat. Two independent studies were carried out in laboratory and field conditions. In first study, Zn was analyzed for sorption reaction at different soil pH using modified Langmuir–Freundlich model. While in the second study, soil vs foliar application of non-chelated and chelated Zn (0.5% w/v) was compared alone and in combination with Fe (0.25% w/v) for improving nutritional quality and productivity of wheat. The results of lab study showed that increase in soil-pH significantly increased model parameter, i.e., affinity constant (Ka). The Zn mineral produced higher Ka value while Zn-EDTA exhibited lower Ka values at all pH levels. In field study, foliar spray of Zn improved grain yield, and grain-Zn over control while grain-Zn was further improved with chelated Zn alone (39.7%) and by chelated Fe synergism (50.9%) compared to control. However, Fe-EDTA application enhanced grain-Fe while FeSO4 was found ineffective to improve grain Fe and Zn. In the current study, foliar application of chelated Zn and Fe significantly improved Zn and Fe contents; hence, application of chelated Zn and Fe may be a viable option for Zn and Fe biofortification of wheat in alkaline soils. [ABSTRACT FROM AUTHOR] |
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| Database: |
Complementary Index |
