Iron Availability and Management Considerations: A 4R Approach

Jones, John D. S.

doi:10.1002/crso.20019

Cited by 17 publications

(12 citation statements)

References 25 publications

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“…Biofortification of vegetables can be carried out in soilless systems by adding higher concentrations of target fertilizers in the nutrient solution [20]. Moreover, in the specific case of Fe, which presents a low solubility in the soil [21], a soilless cultivation system can be a good option to increase micronutrient availability, since it facilitates the pH management in the nutrient solution [22].…”

Section: Introductionmentioning

confidence: 99%

Iron Biofortification of Greenhouse Soilless Lettuce: An Effective Agronomic Tool to Improve the Dietary Mineral Intake

et al. 2022

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The present experiment addressed the effects of different iron (Fe) concentrations in the nutrient solution supplied as Fe-HBED, i.e., 0.02 (Fe0, control), 1.02 (Fe1), and 2.02 mmol L−1 (Fe2) on lettuce (‘Nauplus’ and ‘Romana’) yield and compositional traits. This experiment was carried out in a greenhouse using an open soilless cultivation system, at the experimental farm of the University of Catania (Sicily, Italy: 37°24′31.5″ N, 15°03′32.8″ E, 6 m a.s.l.). The addition of Fe-HBED reduced the plants’ aboveground biomass (−18%, averaged over Fe1 and Fe2), but promoted their dry matter content (+16% in Fe2). The concentration of chlorophylls, carotenoids, anthocyanins, and antioxidants peaked at Fe2, along with the antioxidant capacity and concentration of stress indicators in leaves. The Fe content in leaves was promoted in the Fe-treated plants (+187% averaged over Fe1 and Fe2). ‘Romana’ showed the highest Fe accumulation (reaching 29.8 mg kg−1 FW in Fe1), but ‘Nauplus’ proved a higher tolerance to the Fe-derived oxidative stress. The Fe2 treatment maximized leaf N, P, K, S, and Zn contents, while those of Ca, Mg, Mn, and B peaked at Fe1. Overall, our study revealed the effectiveness of Fe-HBED in increasing the Fe content and improving the nutritional quality of lettuce grown in soilless cultivation systems.

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Section: Introductionmentioning

confidence: 99%

Iron Biofortification of Greenhouse Soilless Lettuce: An Effective Agronomic Tool to Improve the Dietary Mineral Intake

et al. 2022

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“…The general decreased change relative to the initial in M3-Fe along with the generally decreased change in M3-P over time makes it likely that both elements were co-precipitated, forming less-soluble compounds that led to the decrease in M3-P over time. Additionally, the presence of holes in the soil cup's lids allowed for aeration, which may have caused some of the Fe in the soil to exist as insoluble Fe 3+ compounds or become fixed to clays or organic matter [59]. Negative changes from the initial M3-Fe levels in soil-fertilizer-time combinations may also be attributed to Fe-phosphate co-precipitation [31] [33].…”

Section: M3-fementioning

confidence: 99%

Soil Chemical Property Changes over Time from Struvite Compared to Other Fertilizer-Phosphorus Sources in Multiple Soils

Simms,

Brye,

Roberts

et al. 2023

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Studies have shown that phosphorus (P) recovered from wastewater as the mineral struvite [MgNH 4 PO 4 •6(H 2 O)] may be a viable alternative fertilizer-P source. This study aimed to compare the effectiveness of electrochemically precipitated struvite (ECST), reclaimed from synthetic wastewater, to other commercial fertilizer-P sources in cultivated soils from Arkansas [AR; silt loam (SiL) and loam (L)], Missouri (MO; SiL), and Nebraska [NE; SiL and sandy loam (SL)]. A plant-less, moist-soil incubation experiment, including ECST, chemically precipitated struvite (CPST), monoammonium phosphate (MAP), triple superphosphate (TSP), and an unamended control (UC), was conducted to quantify soil pH, nitrate (NO 3 -N), ammonium (NH 4 -N), and Mehlich-3 (M3)-P, -Ca, -Mg, and -Fe concentrations at 0.5, 1, 2, 4, and 6 months. All measured soil properties differed (P < 0.05) among fertilizer-P sources within soils over time. Soil-fertilizer combinations generally had an acidifying effect over time, with pH change from the initial lower at 6 than at 0.5 months and lower than the initial soil pH. Soil NO 3 -N generally increased among fertilizer-P sources, ranging from an increase of 10.1 to 221 mg•kg −1 for AR-L-TSP after 1 month and NE-SiL-MAP after 6 months, respectively. Soil M3-P ranged from −29.6 mg•kg −1 in the AR-L-UC after 1 month to 429 mg•kg −1 AR-SiL-TSP after 0.5 months. Results showed that, over time, ECST had comparable pH and soil NO 3 -N, NH 4 -N, and M3-P, -Ca, -Mg, and -Fe behavior compared to CPST, MAP, and TSP across various soil textures.

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“…for Fe and Mn were above WHO/FEPA permissible limits (300 and 50 mg kgG 1 , respectively), Co and Ni were below the permissible range, but in Abuloma 2 sample, Cu was above the permissible range. Iron (Fe) is an essential element in plants for the enzyme system which brings about oxidation-reduction reactions and elect on transport in the plant, synthesizes chlorophyll and maintains the structure of chloroplast and enzyme activity, it regulates respiration and photosynthesis when found in excess, it can be detrimental and might affect plant growth 15,16 . The concentration of iron (Fe) in the Vernonia amygdalina shown in Fig.…”

Section: G¹mentioning

confidence: 99%

Assessment of Soil and Vernonia amygdalina Cultivated in Port Harcourt, Nigeria

Otobo,

Nwaokezi,

Austin-Asomeji

et al. 2023

Singapore J. Sci. Res

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Background and Objective: Vernonia amygdalina is a vegetable used by habitats of Port Harcourt for both food and medicinal purposes. It is cultivated in most homes, its bioaccumulation of toxicants has been speculated. This study evaluated the heavy metals concentration and risk assessment of soil and Vernonia amygdalina (bitter leaf) cultivated in Abuloma-Trans Amadi, Port Harcourt. Materials and Methods:The soil and bitter leaf (BL) samples were taken randomly from 3 locations, U-(Control), Abuloma-1 and Abuloma-2. They were analyzed for heavy metals using atomic absorption spectroscopy. Transfer factor (TF), contamination factor (CF) and pollution load index (PLI) were evaluated using standard models. One-way Analysis of Variance (ANOVA) was used to determine the mean and standard deviation, the Turkey's post hoc Test was also carried out at a 95% confidence level (p#0.05).Results: Soil samples had Fe and Mn concentrations above WHO permissible limit. Soil Abuloma-1&2 TF was in the order Co>Fe>Ni>Mn>Cu, BL Abuloma 1, Mn>Cu>Ni>Fe>Co while BL Abuloma-2, Cu>Mn>Ni>Fe>Co. Soil samples CF for Abuloma 2 had moderate contamination while Moderate and considerable CF were observed in the BL samples. The PLI for soil samples was highest in Abuloma-1 (0.003868 mg kgG 1 ), for BL samples, Abuloma-2 had the highest pollution index (1.907 mg kgG 1 ). Conclusion:The findings of this study revealed heavy metal contamination of both soil and bitter leaf cultivated in the study, therefore, suggesting a thorough monitoring/regulation of the industrial activities in the Abuloma/Trans Amadi Industrial area of Port Harcourt.

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Iron Availability and Management Considerations: A 4R Approach

Cited by 17 publications

References 25 publications

Iron Biofortification of Greenhouse Soilless Lettuce: An Effective Agronomic Tool to Improve the Dietary Mineral Intake

Iron Biofortification of Greenhouse Soilless Lettuce: An Effective Agronomic Tool to Improve the Dietary Mineral Intake

Soil Chemical Property Changes over Time from Struvite Compared to Other Fertilizer-Phosphorus Sources in Multiple Soils

Assessment of Soil and Vernonia amygdalina Cultivated in Port Harcourt, Nigeria

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