Sustaining zinc bioavailability in wheat grown on phosphorus amended calcisol

Yousaf, Sundas; Akhtar, Muhammad Saleem; Sarwar, Nadeem; Ikram, Wasiq; Hussain, Saddam

doi:10.1016/j.jcs.2019.102846

Cited by 10 publications

(8 citation statements)

References 30 publications

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“…Soil Zn fertilizers have also been reported to increase available Zn, for example, in a field study in Punjab Province, Pakistan, Ahsin et al (2019) reported greater soil concentrations of DTPA-extractable Zn (1.1 ± 0.1 mg kg −1 ; mean ± standard deviation, SD) in soils treated with Zn, than when no Zn fertilizers were applied (0.8 ± 0.1 mg kg −1 ). Soil applications of Zn fertilizers have specifically been shown to be effective at increasing the grain Zn concentration of Zincol-2016 in pot experiments (Yousaf et al, 2019;Yaseen and Hussain, 2020). However, further research is needed to understand the potential value of longer-term soil fertility building with soil Zn fertilizers with new Zn-biofortified wheat varieties under field conditions, including the potential for multi-year effects, and the use of other nutrients to augment Zn uptake and translocation to grain.…”

Section: Discussionmentioning

confidence: 99%

“…added to soils, the differences in grain Zn between Zincol-2016 (∼36 mg kg −1 ) and Faisalabad-2008 (∼25 mg kg −1 ) increased markedly. In a pot study by Yousaf et al (2019), Zincol-2016 (33.9 mg kg −1 ) had a much larger grain Zn concentration than Faisalabad-2008 (23.8 mg kg −1 ) in unfertilized soils. However, genotypic differences were not evident when foliar or soil Zn fertilizers were added and which increased the grain Zn concentration in both varieties.…”

Section: Introductionmentioning

confidence: 92%

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Site-Specific Factors Influence the Field Performance of a Zn-Biofortified Wheat Variety

Zia

Ahmed

Bailey

et al. 2020

Front. Sustain. Food Syst.

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Background: Biofortification of wheat with zinc (Zn) through breeding and agronomy can reduce Zn deficiencies and improve human health. "High-Zn" wheat varieties have been released in India and Pakistan, where wheat is consumed widely as a dietary staple. The aim of this study was to quantify the potential contribution of a "high-Zn" wheat variety (Triticum aestivum L. var. Zincol-2016) and Zn fertilizers to improving dietary Zn supply under field conditions in Pakistan. Methods: Grain Zn concentration of Zincol-2016 and local reference varieties were determined at three sites of contrasting soil Zn status: Faisalabad (Punjab Province; diethylenetriamine pentaacetate-(DTPA-)extractable Zn, 1.31 mg kg −1 soil; gross plot size 13.3 m 2 ; n = 4; reference var. Faisalabad-2008), Islamabad (Capital Territory; 0.48 mg kg −1 ; 4.6 m 2 ; n = 5; reference var. NARC-2011), and Pir Sabak (Khyber Pakhtunkhwa, KPK, Province; 0.12 mg kg −1 soil; 9.1 m 2 ; n = 4; reference vars. Pirsabak-2015, Wadhan-2017). Eight Zn fertilizer treatment levels were tested using a randomized complete block design: control; soil (5 or 10 kg ha −1 ZnSO 4 .H 2 O; 33% Zn applied at sowing); foliar (0.79 or 1.58 kg of ZnSO 4 .H 2 O ha −1 applied as a 250 L ha −1 drench at crop booting stage); three soil × foliar combinations. Results: At the Faisalabad site, the grain Zn concentration of Zincol-2016 was greater than Faisalabad-2008, with no yield penalty. Zincol-2016 did not have larger grain Zn concentrations than reference varieties used at Islamabad or Pir Sabak sites, which both had a lower soil Zn status than the Faisalabad site. Foliar Zn fertilization increased grain Zn concentration of all varieties at all sites. There were no significant effects of soil Zn fertilizers, or variety•fertilizer interactions, on grain Zn concentration or yield. Conclusions: Environment and management affect the performance of "high-Zn" wheat varieties, and these factors needs to be evaluated at scale to assess the potential Zia et al. Field Performance of Zn-Biofortified Wheat nutritional impact of Zn biofortified crops. Designing studies to detect realistic effect sizes for new varieties and crop management strategies is therefore an important consideration. The current study indicated that nine replicate plots would be needed to achieve 80% power to detect a 25% increase in grain Zn concentration.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 92%

Site-Specific Factors Influence the Field Performance of a Zn-Biofortified Wheat Variety

Zia

Ahmed

Bailey

et al. 2020

Front. Sustain. Food Syst.

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“…Such an observation has been reported by Yousaf et al on the application of PA or DAP in soil along with 0.5% ZnSO 4 solution as a foliar application to wheat plants. In that research, grain Zn content was reduced from 40.3 to 34.3 µg/g by PA, and 30.7 µg/g by DAP applications (Yousaf et al, 2019).…”

Section: Strategies For Addressing Zn Deficiencymentioning

confidence: 91%

“…A combined treatment of 50% recommended dose of phosphorous (RDP) through phospho‐enriched compost + 50% RDP through fertilizer and soil application of 12.5 kg ZnSO 4 ·7H 2 O per ha + one spray of 0.5% Zn was found to be instrumental in binding the antagonistic effect of phosphorous on Zn, and it increased Zn concentration in wheat grain (Paramesh et al, 2020). However, application of 80 mg P 2 O 5 /kg of soil as di‐ammonium phosphate (DAP) or phosphoric acid (PA) reportedly has reduced grain Zn concentration in wheat by 30.5% and 26.5% (Yousaf et al, 2019).…”

Section: Strategies For Addressing Zn Deficiencymentioning

confidence: 99%

Zinc nutrition and human health: Overview and implications

Sangeetha

Dutta

Moses

et al. 2022

eFood

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Zinc deficiency, being the fifth leading risk factor for diseases is associated with several disorders and infections, especially diarrhea. The common strategies for sustaining zinc's bioavailability include food fortification, biofortification, supplementation, and dietary diversification. To obtain the best technique, we need to appraise ourselves of the causes of deficiency, zinc bioavailability modalities, potential enhancers as well as inhibitors. This review highlights the role of zinc in human health, its bioavailability, causes and consequences of deficiency, and the strategies to alleviate the deficiency. The strategy of supplementation is pertinent, mostly for the population for whom the usual diet is insufficient for replenishment, and in a short period, the zinc status has to be enhanced. For high-risk groups, fortification could be targeted to prevent potent inhibitors from hindering zinc absorption. By biofortification, enhancement of zinc concentration can be obtained in the edible portion of plants. Germination, fermentation, addition of enhancers, and other processing techniques also help to increase zinc absorption. Dietary modification is found to be an economically feasible, equitable, and sustainable strategy, and can be used to mitigate zinc deficiencies without any antagonistic effect. These strategies should be integrated with health and nutrition programs to create awareness and education, to enhance their sustainability and effectiveness.

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“…In several field studies, Zn delivery through seed treatments (seed priming and seed coating) have reported better grain yield and high economic returns compare to soil and foliar Zn application under diverse soil and climatic conditions (Arif et al, 2007;Farooq et al, 2018;Rehman et al, 2018a,b;Ullah et al, 2020d). However, seed treatments are less effective in improving grain Zn concentration (Farooq et al, 2018;Yousaf et al, 2019). For instance, Farooq et al (2018) demonstrated in a field study at different locations in RWCS of Punjab that Zn application through either method (soil application, seed treatment, and foliar spray) increased the paddy yield and economic return in both puddled and transplanted rice.…”

Section: Benefits Of Zinc Biofortificationmentioning

confidence: 99%

Agronomic Biofortification of Zinc in Pakistan: Status, Benefits, and Constraints

Rehman

Farooq

Ullah

et al. 2020

Front. Sustain. Food Syst.

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Micronutrient malnutrition (e.g., zinc) is one of the major causes of human disease burden in the developing world. Zinc (Zn) deficiency is highly prevalent in the Pakistani population (22.1%), particularly in women and children (under 5 years) due to low dietary Zn intake. In Pakistan, wheat is the primary staple food and is poor in bioavailable Zn. However, the number of malnourished populations has decreased over the last decade due to multiplied public awareness, accelerated use of Zn fertilizers (particularly in wheat and rice), initiation of several national/international research initiatives focusing on Zn biofortification in staple crops and availability of supplements and Zn fortified meals merchandise, nonetheless a large number of people are facing Zn or other micronutrient deficiencies in the country. There are few reports highlighting the significant increase in daily dietary Zn uptake in population consuming biofortified wheat (Zincol-2016) flour; indicating the positive prospect of biofortification interventions up scaling in lowering the risk of dietary Zn deficiency in rural and marginalized communities. Zinc fertilizer strategy has not only helped in enhancing the grain Zn concentration, but it also helped in improving crop yield with high economic return. In addition, Zn biofortified seeds have exhibited strong inherent ability to withstand abiotic stresses and produce higher grain yield under diverse climatic conditions. However, there are many constraints (soil, environment, genetic diversity, antinutrients concentration, socioeconomic factors etc.) that hinder the success of biofortification interventions. This review highlights the status of Zn deficiency in Pakistan, the success of agronomic and genetic biofortification interventions. It also discusses the economics of agronomic biofortification and cost effectiveness of Zn fertilization in field conditions in Pakistan and the potential of Zn biofortified seeds against abiotic stresses. Furthermore, it also highlights the constraints which limit the sustainability of biofortification interventions.

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Sustaining zinc bioavailability in wheat grown on phosphorus amended calcisol

Cited by 10 publications

References 30 publications

Site-Specific Factors Influence the Field Performance of a Zn-Biofortified Wheat Variety

Site-Specific Factors Influence the Field Performance of a Zn-Biofortified Wheat Variety

Zinc nutrition and human health: Overview and implications

Agronomic Biofortification of Zinc in Pakistan: Status, Benefits, and Constraints

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