Paper · 2012 · Communications in Soil Science and Plant Analysis

Application of Excess Nitrogen, Phosphorus, and Potassium Fertilizers Leads to Lowering of Grain Iron Content in High-Yielding Tropical Rice

Binay Bhusan Panda; Srigopal Sharma; Pravat Kumar Mohapatra; et al.

8
claims
16
verbatim quotes
30
citations
2
research areas
—
Not open access

Abstract

Influences of nitrogen (N), phosphorus (P), and potassium (K) fertilizer doses were assessed on iron (Fe) accumulation in leaves and grains of three high-yielding rice cultivars differing in grain Fe concentration. Effects of these treatments were also measured on grain yield, leaf area, and plant biomass of the cultivars. Nitrogen, P, and K applications improved plant biomass and grain yield of all cultivars. Among the nutrients, N was most effective in increasing leaf Fe concentration, followed by P and K in all three rice cultivars. Sharbati accumulated the greatest concentration of leaf Fe followed by IR-64 and Lalat. However, greater doses of these nutrients adversely affected grain yield and Fe content of leaf and grain. Application of excess N, P, and K fertilizers may, thus, sometimes results in lowering of grain Fe content in rice. Judicious application of the elements is recommended for prevention of Fe-induced malnutrition.

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The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.

Claims 8

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

N, P and K increased plant biomass.

Treatment
Nitrogen, P, and K applicationse0
Outcome
plant biomasse0
Direction
improvede0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“Nitrogen, P, and K applications improved plant biomass and grain yield of all cultivars.”

✓ located verbatim in the source · abstract, characters 325–413 · show in text ↑
t0

“Rice”

✓ located verbatim in the source · title, characters 136–140 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

N, P and K increased grain yield.

Treatment
Nitrogen, P, and K applicationse0
Outcome
grain yielde0
Direction
improvede0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“Nitrogen, P, and K applications improved plant biomass and grain yield of all cultivars.”

✓ located verbatim in the source · abstract, characters 325–413 · show in text ↑
t0

“Rice”

✓ located verbatim in the source · title, characters 136–140 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

N increased leaf iron most, followed by P and K.

Treatment
Ne0
Outcome
leaf Fe concentratione0
Direction
increasinge0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“Among the nutrients, N was most effective in increasing leaf Fe concentration, followed by P and K in all three rice cultivars.”

✓ located verbatim in the source · abstract, characters 414–541 · show in text ↑
t0

“Rice”

✓ located verbatim in the source · title, characters 136–140 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Sharbati had the greatest leaf iron concentration, followed by IR-64 and Lalat.

Material
Sharbatie0
Outcome
concentration of leaf Fee0
Direction
greateste0
Comparator
IR-64 and Lalate0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“Sharbati accumulated the greatest concentration of leaf Fe followed by IR-64 and Lalat.”

✓ located verbatim in the source · abstract, characters 542–629 · show in text ↑
t0

“Rice”

✓ located verbatim in the source · title, characters 136–140 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Greater nutrient doses reduced grain yield.

Treatment
greater doses of these nutrientse0
Outcome
grain yielde0
Direction
adversely affectede0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“However, greater doses of these nutrients adversely affected grain yield and Fe content of leaf and grain.”

✓ located verbatim in the source · abstract, characters 630–736 · show in text ↑
t0

“Rice”

✓ located verbatim in the source · title, characters 136–140 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Greater nutrient doses reduced leaf iron content.

Treatment
greater doses of these nutrientse0
Outcome
Fe content of leafe0
Direction
adversely affectede0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“However, greater doses of these nutrients adversely affected grain yield and Fe content of leaf and grain.”

✓ located verbatim in the source · abstract, characters 630–736 · show in text ↑
t0

“Rice”

✓ located verbatim in the source · title, characters 136–140 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Greater nutrient doses reduced grain iron content.

Treatment
greater doses of these nutrientse0
Outcome
Fe content of leaf and graine0
Direction
adversely affectede0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“However, greater doses of these nutrients adversely affected grain yield and Fe content of leaf and grain.”

✓ located verbatim in the source · abstract, characters 630–736 · show in text ↑
t0

“Rice”

✓ located verbatim in the source · title, characters 136–140 · show in text ↑
Recommendationauthor interpretationoriginal resultbasis n/a

Claim · model-written summary

The authors recommend judicious application of the elements to prevent iron-induced malnutrition.

Outcome
Judicious application of the elementse0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“Judicious application of the elements is recommended for prevention of Fe-induced malnutrition.”

✓ located verbatim in the source · abstract, characters 853–948 · show in text ↑
t0

“Rice”

✓ located verbatim in the source · title, characters 136–140 · show in text ↑

phosphorus · growth · Oryza sativa (rice)Positive and negative results

166 papers: 133 positive, 33 negative or no effect

132 papers in the same direction as this paper · 32 in the opposite direction · 1 reporting no difference from an alternative

  1. negative
  2. negative
  3. negative

162 papers more in this group

See all 166 papers →

phosphorus · yield · Oryza sativa (rice)Positive and negative results

475 papers: 419 positive, 56 negative or no effect

418 papers in the same direction as this paper · 46 in the opposite direction · 10 reporting no difference from an alternative

  1. negative
  2. no effect
  3. no effect

471 papers more in this group

See all 475 papers →

nitrogen · growth · Oryza sativa (rice)Positive and negative results

511 papers: 402 positive, 109 negative or no effect

401 papers in the same direction as this paper · 101 in the opposite direction · 8 reporting no difference from an alternative

  1. negative
  2. negative
  3. negative

507 papers more in this group

See all 511 papers →

nitrogen · yield · Oryza sativa (rice)Positive and negative results

2,045 papers: 1,803 positive, 242 negative or no effect

1,802 papers in the same direction as this paper · 193 in the opposite direction · 49 reporting no difference from an alternative

  1. positive
  2. negative
  3. negative

2,041 papers more in this group

See all 2,045 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.