Paper · 1996 · Journal of Agronomy and Crop Science

Effect of Zinc and Iron Supply on Production Potential of Rice (Oryza sativa L.)

P. K. Tandon

4
claims
10
verbatim quotes
7
citations
2
research areas
—
Not open access

Abstract

Abstract A field experiment was performed to study the effect of zinc and iron supply on grain yield in four promising varieties of rice ( Oryza sativa L.) viz. IR‐20, Jaya, Pusa 2–21, and IET‐1444. Three doses of ZnSO 4 or FeSO 4 (0, 20 or 40 kg ha −1 ) along with all possible combinations were investigated. The varietal differences were significant in grain yield ha −1 . The grain yield increased with the dose of zinc and Jaya but not significantly in IR‐20. The increase in grain yield was more significant and dose dependent in IET‐1444 than in Jaya in response to iron application.

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Claims 4

Observationobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Grain yield differed significantly among the four rice varieties.

Outcome
grain yield ha −1e1
Qualifier
varietal differencese1

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

“A field experiment was performed to study the effect of zinc and iron supply on grain yield in four promising varieties of rice ( Oryza sativa L.) viz. IR‐20, Jaya, Pusa 2–21, and IET‐1444”

✓ located verbatim in the source · abstract, characters 9–197 · show in text ↑
e1

“The varietal differences were significant in grain yield ha −1”

✓ located verbatim in the source · abstract, characters 311–373 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Grain yield of Jaya increased with the dose of zinc sulfate.

Material
Jayae2
Treatment
ZnSO 4e4
Outcome
grain yielde2
Direction
increasede2

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

“A field experiment was performed to study the effect of zinc and iron supply on grain yield in four promising varieties of rice ( Oryza sativa L.) viz. IR‐20, Jaya, Pusa 2–21, and IET‐1444”

✓ located verbatim in the source · abstract, characters 9–197 · show in text ↑
e2

“The grain yield increased with the dose of zinc and Jaya but not significantly in IR‐20”

✓ located verbatim in the source · abstract, characters 376–463 · show in text ↑
e4

“Three doses of ZnSO 4 or FeSO 4 (0, 20 or 40 kg ha −1 )”

✓ located verbatim in the source · abstract, characters 199–254 · show in text ↑
Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Grain yield of IR-20 increased with zinc sulfate, but not significantly.

Material
IR‐20e2
Treatment
ZnSO 4e4
Outcome
grain yielde2
Direction
increasede2

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

“A field experiment was performed to study the effect of zinc and iron supply on grain yield in four promising varieties of rice ( Oryza sativa L.) viz. IR‐20, Jaya, Pusa 2–21, and IET‐1444”

✓ located verbatim in the source · abstract, characters 9–197 · show in text ↑
e2

“The grain yield increased with the dose of zinc and Jaya but not significantly in IR‐20”

✓ located verbatim in the source · abstract, characters 376–463 · show in text ↑
e4

“Three doses of ZnSO 4 or FeSO 4 (0, 20 or 40 kg ha −1 )”

✓ located verbatim in the source · abstract, characters 199–254 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

The grain yield increase in response to iron application was more significant and dose dependent in IET-1444 than in Jaya.

Material
IET‐1444e3
Treatment
iron applicatione3
Outcome
grain yielde3
Direction
increasee3
Qualifier
dose dependente3
Comparator
Jayae3

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

“A field experiment was performed to study the effect of zinc and iron supply on grain yield in four promising varieties of rice ( Oryza sativa L.) viz. IR‐20, Jaya, Pusa 2–21, and IET‐1444”

✓ located verbatim in the source · abstract, characters 9–197 · show in text ↑
e3

“The increase in grain yield was more significant and dose dependent in IET‐1444 than in Jaya in response to iron application”

✓ located verbatim in the source · abstract, characters 465–589 · show in text ↑

iron atom · yield · Oryza sativa (rice)Results differ

71 papers: 57 positive, 14 negative or no effect

56 papers in the same direction as this paper · 13 in the opposite direction · 1 reporting no difference from an alternative

  1. positive
  2. positive
  3. negative
    Iron toxicity reduced rice yields by 16–78 %, averaging 43 %.

    Rice Yield Gap due to Iron Toxicity in West Africa · 2008 · compared with referential yield obtained in a non‐iron‐toxic site

    Opposite direction

67 papers more in this group

See all 71 papers →

zinc sulfate · yield · Oryza sativa (rice)Results differ

145 papers: 144 positive, 1 negative or no effect

143 papers in the same direction as this paper · 1 in the opposite direction

  1. negative
  2. positive
  3. positive

141 papers more in this group

See all 145 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.