Abstract
Synthetic chelating agents have high cost and low biodegradation in the environment; thus, the use of natural complexing agents for iron increases the sustainability in crop production. The aim of this study was to verify the efficiency of natural organic acids added to the nutrient solution on the Fe acquisition. For that purpose, two experiments were carried out using soybean and maize. Citric acid (CA), malic acid (MA), tartaric acid (TA), and oxalic acid (OA) were used as complexing agents for iron. Fe-EDTA (ethylenediaminetetraacetic acid) and FeSO4 were also tested. Soluble Fe and chemical speciation in a nutrient solution were determined. Organic acids maintained less complexed Fe in the nutrient solution than EDTA, but the complexed Fe fraction was not associated with the efficiency of the Fe organic acids in supplying Fe to plants. Maize and soybean treated with Fe-MA and Fe-CA had reduced plant development. For maize, the TA treatment at both SRs increased Fe accumulation and promoted Fe translocation similar to EDTA. For soybean, Fe-OA at both SRs promoted biomass, Fe accumulation, and Fe translocation similar to EDTA. Therefore, Fe complexes were able to assure plant growth and nutrition and showed effectiveness depending on the plant species.
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Claims 8
Claim · model-written summary
Organic acids maintained less complexed iron in nutrient solution than EDTA.
Not reportedTaxon
Verbatim
e0“Organic acids maintained less complexed Fe in the nutrient solution than EDTA”
Claim · model-written summary
The complexed iron fraction was not associated with the efficiency of organic acids in supplying iron to plants.
- Compound
- complexed Fe fractione0
- Outcome
- efficiency of the Fe organic acids in supplying Fe to plantse0
- Direction
- not associatede0
Not reportedTaxon
Verbatim
e0“the complexed Fe fraction was not associated with the efficiency of the Fe organic acids in supplying Fe to plants”
Claim · model-written summary
Fe-MA reduced maize development.
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Maize and soybean treated with Fe-MA and Fe-CA had reduced plant development.”
Claim · model-written summary
Fe-CA reduced maize development.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Maize and soybean treated with Fe-MA and Fe-CA had reduced plant development.”
Claim · model-written summary
Fe-MA reduced soybean development.
- Taxon
- soybean
Glycine maxe0 - Treatment
- Fe-MAe0
- Outcome
- plant developmente0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Maize and soybean treated with Fe-MA and Fe-CA had reduced plant development.”
Claim · model-written summary
Fe-CA reduced soybean development.
- Taxon
- soybeanGlycine maxe0
- Treatment
- Fe-CAe0
- Outcome
- plant developmente0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Maize and soybean treated with Fe-MA and Fe-CA had reduced plant development.”
Claim · model-written summary
TA increased iron accumulation and promoted iron translocation in maize at both SRs, similarly to EDTA.
- Treatment
- TA treatment at both SRse0
- Outcome
- Fe accumulation and promoted Fe translocatione0
- Direction
- increasede0
- Comparator
- EDTAe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“For maize, the TA treatment at both SRs increased Fe accumulation and promoted Fe translocation similar to EDTA.”
Claim · model-written summary
Fe-OA promoted biomass, iron accumulation and iron translocation in soybean at both SRs, similarly to EDTA.
- Taxon
- soybeanGlycine maxe0
- Treatment
- Fe-OA at both SRse0
- Outcome
- biomass, Fe accumulation, and Fe translocatione0
- Direction
- promotede0
- Comparator
- EDTAe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“For soybean, Fe-OA at both SRs promoted biomass, Fe accumulation, and Fe translocation similar to EDTA.”
The same questions in other papers
iron atom · growth · Glycine max (soybean)Results differ
28 papers in the same direction as this paper · 11 in the opposite direction
- negative
- no effect
- negative
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See all 40 papers →iron atom · growth · Zea mays (maize)Results differ
6 papers in the same direction as this paper · 57 in the opposite direction
- positive
- positive
- positive
60 papers more in this group
See all 64 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.