Abstract
Abstract The Fe inefficient PI54619–5–1 soybean (Glycine max L.) was grown in calcareous Hacienda loam soil with different applied N levels, i.e., 0, 100, 200 and 400 μg/g soil applied as NH4NO3. One set was grown without Fe addition and another with 0.25μg Fe/g soil as the FeEDDHA chelate. When no Fe was applied, the zero N resulted in no Fe chlorosis symptoms and symptoms became more pronounced with increasing N. Leaf analysis indicated a syndrome of true Fe deficiency resulting from the high N which was accompanied with increased P, Cu and Al. When Fe was applied, all the N treatments resulted in green plants with highest vegetative yield at 100 μg N/g soil. Zero N, 200 and 400 μg N/g soil resulted in close to similar yields. Nitrogen promoted increased Fe uptake in this experiment when Fe was added as a chelate. Leaf mineral analyses were unlike those not supplied with Fe.
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Claims 9
Claim · model-written summary
Without added iron, zero nitrogen produced no chlorosis symptoms.
- Taxon
- soybean
Glycine maxe0 - Material
- PI54619–5–1e0
- Treatment
- zero Ne1
- Outcome
- Fe chlorosis symptomse1
- Direction
- noe1
- Qualifier
- no Fe was appliede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The Fe inefficient PI54619–5–1 soybean (Glycine max L.)”
e1“When no Fe was applied, the zero N resulted in no Fe chlorosis symptoms”
Claim · model-written summary
Without added iron, chlorosis symptoms became more pronounced as nitrogen increased.
- Taxon
- soybeanGlycine maxe0
- Material
- PI54619–5–1e0
- Treatment
- increasing Ne1
- Outcome
- symptomse1
- Direction
- more pronouncede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The Fe inefficient PI54619–5–1 soybean (Glycine max L.)”
e1“symptoms became more pronounced with increasing N”
Claim · model-written summary
High nitrogen induced true iron deficiency in soybean leaves.
- Taxon
- soybeanGlycine maxe0
- Treatment
- high Ne1
- Outcome
- true Fe deficiencye1
- Direction
- deficiencye1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“PI54619–5–1 soybean (Glycine max L.)”
e1“Leaf analysis indicated a syndrome of true Fe deficiency resulting from the high N”
Claim · model-written summary
High nitrogen increased leaf phosphorus, copper, and aluminium alongside iron deficiency.
- Taxon
- soybeanGlycine maxe0
- Organ / stage
- Leafe2
- Treatment
- high Ne1
- Outcome
- P, Cu and Ale1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“PI54619–5–1 soybean (Glycine max L.)”
e1“the high N which was accompanied with increased P, Cu and Al”
e2“Leaf analysis indicated a syndrome of true Fe deficiency resulting from the high N”
Claim · model-written summary
With iron applied, soybean plants were green under every nitrogen treatment.
- Taxon
- soybeanGlycine maxe0
- Treatment
- all the N treatmentse1
- Outcome
- green plantse1
- Qualifier
- Fe was appliede1
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“PI54619–5–1 soybean (Glycine max L.)”
e1“When Fe was applied, all the N treatments resulted in green plants”
Claim · model-written summary
With iron applied, vegetative yield was highest at 100 μg N/g soil.
- Taxon
- soybeanGlycine maxe0
- Treatment
- 100 μg N/g soile1
- Outcome
- vegetative yielde1
- Direction
- higheste1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“PI54619–5–1 soybean (Glycine max L.)”
e1“highest vegetative yield at 100 μg N/g soil”
Claim · model-written summary
Zero, 200, and 400 μg N/g soil gave closely similar soybean yields when iron was applied.
- Taxon
- soybeanGlycine maxe0
- Outcome
- yieldse1
- Direction
- close to similare1
- Qualifier
- Zero N, 200 and 400 μg N/g soile1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“PI54619–5–1 soybean (Glycine max L.)”
e1“Zero N, 200 and 400 μg N/g soil resulted in close to similar yields”
Claim · model-written summary
Nitrogen increased soybean iron uptake when iron was supplied as a chelate.
- Taxon
- soybeanGlycine maxe0
- Treatment
- Nitrogene1
- Outcome
- Fe uptakee1
- Direction
- increasede1
- Qualifier
- Fe was added as a chelatee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“PI54619–5–1 soybean (Glycine max L.)”
e1“Nitrogen promoted increased Fe uptake in this experiment when Fe was added as a chelate”
Claim · model-written summary
Leaf mineral analyses differed between soybean plants supplied and not supplied with iron.
- Taxon
- soybeanGlycine maxe0
- Treatment
- Fee1
- Outcome
- Leaf mineral analysese1
- Comparator
- those not supplied with Fee1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“PI54619–5–1 soybean (Glycine max L.)”
e1“Leaf mineral analyses were unlike those not supplied with Fe”
The same questions in other papers
nitrogen · nutrient: content · Glycine max (soybean)Results differ
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- no effect
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See all 416 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.