An effective strategy to synthesize water-soluble iron heterocomplexes containing Dubb humic acid chelating agent as efficient micronutrients for iron-deficient soils of high pH levels

Nikoosefat, Omid; Shariatinia‬, Zahra; Mair, Francis S.; Paghaleh, Ali Sharif

doi:10.1016/j.molliq.2023.121441

Cited by 5 publications

(3 citation statements)

References 55 publications

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“…Studies have shown that the combined use of GA3 and humic acid can reduce electrolyte leakage in rice plants, indicating that the plant cells are less damaged and more resistant to stress (Hizal et al, 2023, Ritonga et al, 2023. The chelating properties of humic acid may play a role in this effect, as they can help to bind minerals and other nutrients in the soil, making them more available to the plant (Nikoosefat et al, 2023). Humic acid can increase soil organic matter content by acting as a soil conditioner (Chen et al, 2023).…”

Section: Discussionmentioning

confidence: 99%

Response of integrated use of humic acid and chemical fertilizer on growth and yield of rice crop (Oryza sativa L.) in calcareous soil

Minhas,

Saeed,

Ehsan

et al. 2024

PAK. J. BOT.

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Poor soil organic carbon and low fertility are interrelated problems that can significantly negatively impact agricultural productivity and ecosystem health. Organic carbon is crucial to soil fertility as it supports soil structure, water retention, and nutrient availability. That's why scientists suggest using organic fertilizers to overcome this issue. Humic acid (HA) is one of such organic amendment that plays a critical role in soil health and fertility. Although a lot of work has been done so far on HA, the novelty of current study was the utilization of K and GA3-enriched humic acid. For experimental purposes, 3 levels of fertilizers (i.e., control, 50% and 100% recommended NPK) were applied with and without HA in rice. There were 3 replicates following the randomized complete block design (RCBD). Results showed that the 50% RDF application rate resulted in a 140.7% increase in plant height, while a 100% RDF application rate led to a 184.2% increase. Specifically, a 50% RDF application rate resulted in a 8.8% increase in spike length, while a 100% RDF application rate led to a 23.4% increase. The use of 50% RDF with humic acid resulted in a significant increase of 41.4%, while the application of 100% RDF with humic acid led to a 40.1% increase compared to the control treatment in 1000 grains weight. In conclusion, the combined use of humic acid and 50% RDF could prove a better strategy to obtain optimum yield in rice crop in calcareous soil than 100% RDF. However, 100% RDF can maximize plant height and spike length. More investigations are recommended at the field level to introduce GA3 and K-enriched HA as effective amendments to improve rice growth under limited fertilizer supply in poor, fertilized calcareous soils.

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Section: Discussionmentioning

confidence: 99%

Response of integrated use of humic acid and chemical fertilizer on growth and yield of rice crop (Oryza sativa L.) in calcareous soil

Minhas,

Saeed,

Ehsan

et al. 2024

PAK. J. BOT.

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“…The finding suggested that a high level of EC e (figure S2) possibly resulted in a low concentration of Fe (table 1), as shown by the negative correlation between the EC e and the Fe concentration at the depths of 0-20 cm (P < 0.05), 30-50 cm (P < 0.01), 60-80 cm (P < 0.01), and 80-120 cm (P < 0.05), respectively (figure 5). The factor responsible for the decrease in Fe solubility in salt-affected soils (high EC e value) can be both sodium and bicarbonate ions (Rabhi et al 2007), which might cause the precipitation of Fe in the forms of hydroxides and oxides (Nikoosefat et al 2023). High salinity levels also brought about the low concentration of Zn.…”

Section: Reciprocal Effects Of Salinity and Sodicity Levels On Depth-...mentioning

confidence: 99%

Interactive influences of salinity and sodicity levels on depth-wise soil organic matter and micronutrient elements in Thailand

Phankamolsil,

Tengprasert,

Kheoruenromne

et al. 2024

Environ. Res. Commun.

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Soil salinity and sodicity are the major environmental issues that lead to the deterioration of soil properties, nutrient cycling, and soil ecosystems around the globe. Nevertheless, the reciprocal effects of salinity and sodicity levels on depth-wise soil organic matter (SOM) and micronutrients remain elusive, particularly in Thailand. For a better understanding of such an issue, soil samples were collected from 38 sites at depths of 0–20, 30–50, 60–80, and 80–120 cm where they were affected by salts with variable levels of salinity and sodicity, having electrical conductivity (ECe), and exchangeable sodium percentage (ESP) from 0.20–74.70 dS m–1, and 2.74%–113.23%, respectively. Soil physicochemical properties, including distribution of sand, silt, and clay, pH, soil organic carbon (SOC), and micronutrients (Fe, Zn, Mn, Cu, and B) were determined. The results exhibited that SOC content, ranging from 3.36–14.74 g kg–1, was higher in topsoil (0–20 cm) compared to the other three soil depths and it correlated negatively with ECe (0–20 and 80–120 cm) and ESP (80–120 cm), suggesting the declines in SOC amount due to high salinity and sodicity levels. Topsoil Mn concentration (0.06–182.06 mg kg–1) also tended to be greater than the other soil depths while Fe concentration in that soil depth (0.02–33.99 mg kg–1) tended to be smaller. The ECe correlated negatively with the concentrations of Fe, Cu (all soil depths), and Zn (30–50 and 60–80 cm), and positively with Mn concentration (60–80 and 80–120 cm), suggesting that the availability of Fe Cu and Zn is vulnerable to high salinity and sodicity levels. Overall, our findings highlight that high salinity and sodicity levels brought about a reduction in SOC content and low concentrations of micronutrients in soils, irrespective of Mn concentration.

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“…Our hypothesis is that the consecutive use of two different ligands may favor the formation of more Fe-ligand bonds and prevent the formation of molecular aggregates through metal bridges, thus increasing their stability and solubility. − In this framework, we obtained heteromolecular complexes based on Fe-citrate and HS (Cit-Fe-HS) and Fe-citrate and Ls (Ls-Cit), which showed a capacity to maintain Fe in solution at basic pH and in the presence of Ca 2+ at higher concentrations than the corresponding Fe-citrate, Fe-HS or Ls, and Fe-EDTA as well . Other studies confirmed these results …”

Section: Introductionmentioning

confidence: 99%

Supramolecular Arrangement of Lignosulfonate-Based Iron Heteromolecular Complexes and Consequences of Their Interaction with Ca²⁺ at Alkaline pH and Fe Plant Root Uptake Mechanisms

Fuentes

Bosch

Hita

et al. 2023

J. Agric. Food Chem.

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Previous studies have shown that natural heteromolecular complexes might be an alternative to synthetic chelates to correct iron (Fe) deficiency. To investigate the mechanism of action of these complexes, we have studied their interaction with Ca2+ at alkaline pH, Fe-binding stability, Fe-root uptake in cucumber, and chemical structure using molecular modeling. The results show that a heteromolecular Fe complex including citric acid and lignosulfonate as binding ligands (Ls-Cit) forms a supramolecular system in solution with iron citrate interacting with the hydrophobic inner core of the lignosulfonate system. These structural features are associated with high stability against Ca2+ at basic pH. Likewise, unlike Fe-EDDHA, root Fe uptake from Ls-Cit implies the activation of the main root responses under Fe deficiency at the transcriptional level but not at the post-transcriptional level. These results are consistent with the involvement of some plant responses to Fe deficiency in the plant assimilation of complexed Fe in Ls-Cit under field conditions.

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An effective strategy to synthesize water-soluble iron heterocomplexes containing Dubb humic acid chelating agent as efficient micronutrients for iron-deficient soils of high pH levels

Cited by 5 publications

References 55 publications

Response of integrated use of humic acid and chemical fertilizer on growth and yield of rice crop (Oryza sativa L.) in calcareous soil

Response of integrated use of humic acid and chemical fertilizer on growth and yield of rice crop (Oryza sativa L.) in calcareous soil

Interactive influences of salinity and sodicity levels on depth-wise soil organic matter and micronutrient elements in Thailand

Supramolecular Arrangement of Lignosulfonate-Based Iron Heteromolecular Complexes and Consequences of Their Interaction with Ca²⁺ at Alkaline pH and Fe Plant Root Uptake Mechanisms

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An effective strategy to synthesize water-soluble iron heterocomplexes containing Dubb humic acid chelating agent as efficient micronutrients for iron-deficient soils of high pH levels

Cited by 5 publications

References 55 publications

Response of integrated use of humic acid and chemical fertilizer on growth and yield of rice crop (Oryza sativa L.) in calcareous soil

Response of integrated use of humic acid and chemical fertilizer on growth and yield of rice crop (Oryza sativa L.) in calcareous soil

Interactive influences of salinity and sodicity levels on depth-wise soil organic matter and micronutrient elements in Thailand

Supramolecular Arrangement of Lignosulfonate-Based Iron Heteromolecular Complexes and Consequences of Their Interaction with Ca2+ at Alkaline pH and Fe Plant Root Uptake Mechanisms

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Supramolecular Arrangement of Lignosulfonate-Based Iron Heteromolecular Complexes and Consequences of Their Interaction with Ca²⁺ at Alkaline pH and Fe Plant Root Uptake Mechanisms