Paper · 2010 · Applied Biological Research

Effect of Applied Nitrogen on Photosynthesis and Yield Parameters of Various Rice Cultivars

Nazir Lone; Manzoor Ur Rahman Mir; Abdul Viqar Khan; et al.

9
claims
18
verbatim quotes
0
citations
2
research areas
—
Not open access

Abstract

A field study was conducted at the Experimental Farm of AMU, Aligarh (UP), India on five rice cultivars namely IR-8, Ratna, Pallavi, Swarnaprabhprabha and Pusa-33 to assess the effect of nitrogen on photosynthesis and yield parameters of rice. Leaf area index, stomatal conductance, chlorophyll content, photosynthesis, canopy photosynthesis, total dry matter were determined at 30 and 50 days after planting (DAP) and at flowering stages. The panicle number, grain panicle-1 and grain yield were determined at harvest. At 100 kg N ha−1 the leaf area index, photosynthesis, stomatal conductance, chlorophyll content, canopy photosynthesis, total dry matter, number of panicles, grain panicle-1 and grain yield showed significant increase over control by 46.2, 20.5, 31.1, 36.8, 86.0, 36.8, 29.0, 96.5 and 12.7%, respectively.

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Claims 9

Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

At 100 kg N ha−1, leaf area index increased significantly over control by 46.2.

Treatment
100 kg N ha−1e0
Outcome
leaf area indexe0
Direction
increasee0
Value
46.2e0
Comparator
controle0

Not reportedSetting

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

t0

“Effect of Applied Nitrogen on Photosynthesis and Yield Parameters of Various Rice Cultivars”

✓ located verbatim in the source · title, characters 0–91 · show in text ↑
e0

“At 100 kg N ha−1 the leaf area index, photosynthesis, stomatal conductance, chlorophyll content, canopy photosynthesis, total dry matter, number of panicles, grain panicle-1 and grain yield showed significant increase over control by 46.2, 20.5, 31.1, 36.8, 86.0, 36.8, 29.0, 96.5 and 12.7%, respectively.”

✓ located verbatim in the source · abstract, characters 520–825 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

At 100 kg N ha−1, photosynthesis increased significantly over control by 20.5.

Treatment
100 kg N ha−1e0
Outcome
photosynthesise0
Direction
increasee0
Value
20.5e0
Comparator
controle0

Not reportedSetting

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

t0

“Effect of Applied Nitrogen on Photosynthesis and Yield Parameters of Various Rice Cultivars”

✓ located verbatim in the source · title, characters 0–91 · show in text ↑
e0

“At 100 kg N ha−1 the leaf area index, photosynthesis, stomatal conductance, chlorophyll content, canopy photosynthesis, total dry matter, number of panicles, grain panicle-1 and grain yield showed significant increase over control by 46.2, 20.5, 31.1, 36.8, 86.0, 36.8, 29.0, 96.5 and 12.7%, respectively.”

✓ located verbatim in the source · abstract, characters 520–825 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

At 100 kg N ha−1, stomatal conductance increased significantly over control by 31.1.

Treatment
100 kg N ha−1e0
Outcome
stomatal conductancee0
Direction
increasee0
Value
31.1e0
Comparator
controle0

Not reportedSetting

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

t0

“Effect of Applied Nitrogen on Photosynthesis and Yield Parameters of Various Rice Cultivars”

✓ located verbatim in the source · title, characters 0–91 · show in text ↑
e0

“At 100 kg N ha−1 the leaf area index, photosynthesis, stomatal conductance, chlorophyll content, canopy photosynthesis, total dry matter, number of panicles, grain panicle-1 and grain yield showed significant increase over control by 46.2, 20.5, 31.1, 36.8, 86.0, 36.8, 29.0, 96.5 and 12.7%, respectively.”

✓ located verbatim in the source · abstract, characters 520–825 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

At 100 kg N ha−1, chlorophyll content increased significantly over control by 36.8.

Treatment
100 kg N ha−1e0
Outcome
chlorophyll contente0
Direction
increasee0
Value
36.8e0
Comparator
controle0

Not reportedSetting

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

t0

“Effect of Applied Nitrogen on Photosynthesis and Yield Parameters of Various Rice Cultivars”

✓ located verbatim in the source · title, characters 0–91 · show in text ↑
e0

“At 100 kg N ha−1 the leaf area index, photosynthesis, stomatal conductance, chlorophyll content, canopy photosynthesis, total dry matter, number of panicles, grain panicle-1 and grain yield showed significant increase over control by 46.2, 20.5, 31.1, 36.8, 86.0, 36.8, 29.0, 96.5 and 12.7%, respectively.”

✓ located verbatim in the source · abstract, characters 520–825 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

At 100 kg N ha−1, canopy photosynthesis increased significantly over control by 86.0.

Treatment
100 kg N ha−1e0
Outcome
canopy photosynthesise0
Direction
increasee0
Value
86.0e0
Comparator
controle0

Not reportedSetting

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

t0

“Effect of Applied Nitrogen on Photosynthesis and Yield Parameters of Various Rice Cultivars”

✓ located verbatim in the source · title, characters 0–91 · show in text ↑
e0

“At 100 kg N ha−1 the leaf area index, photosynthesis, stomatal conductance, chlorophyll content, canopy photosynthesis, total dry matter, number of panicles, grain panicle-1 and grain yield showed significant increase over control by 46.2, 20.5, 31.1, 36.8, 86.0, 36.8, 29.0, 96.5 and 12.7%, respectively.”

✓ located verbatim in the source · abstract, characters 520–825 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

At 100 kg N ha−1, total dry matter increased significantly over control by 36.8.

Treatment
100 kg N ha−1e0
Outcome
total dry mattere0
Direction
increasee0
Value
36.8e0
Comparator
controle0

Not reportedSetting

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

t0

“Effect of Applied Nitrogen on Photosynthesis and Yield Parameters of Various Rice Cultivars”

✓ located verbatim in the source · title, characters 0–91 · show in text ↑
e0

“At 100 kg N ha−1 the leaf area index, photosynthesis, stomatal conductance, chlorophyll content, canopy photosynthesis, total dry matter, number of panicles, grain panicle-1 and grain yield showed significant increase over control by 46.2, 20.5, 31.1, 36.8, 86.0, 36.8, 29.0, 96.5 and 12.7%, respectively.”

✓ located verbatim in the source · abstract, characters 520–825 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

At 100 kg N ha−1, number of panicles increased significantly over control by 29.0.

Treatment
100 kg N ha−1e0
Outcome
number of paniclese0
Direction
increasee0
Value
29.0e0
Comparator
controle0

Not reportedSetting

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

t0

“Effect of Applied Nitrogen on Photosynthesis and Yield Parameters of Various Rice Cultivars”

✓ located verbatim in the source · title, characters 0–91 · show in text ↑
e0

“At 100 kg N ha−1 the leaf area index, photosynthesis, stomatal conductance, chlorophyll content, canopy photosynthesis, total dry matter, number of panicles, grain panicle-1 and grain yield showed significant increase over control by 46.2, 20.5, 31.1, 36.8, 86.0, 36.8, 29.0, 96.5 and 12.7%, respectively.”

✓ located verbatim in the source · abstract, characters 520–825 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

At 100 kg N ha−1, grain panicle-1 increased significantly over control by 96.5.

Treatment
100 kg N ha−1e0
Outcome
grain panicle-1e0
Direction
increasee0
Value
96.5e0
Comparator
controle0

Not reportedSetting

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

t0

“Effect of Applied Nitrogen on Photosynthesis and Yield Parameters of Various Rice Cultivars”

✓ located verbatim in the source · title, characters 0–91 · show in text ↑
e0

“At 100 kg N ha−1 the leaf area index, photosynthesis, stomatal conductance, chlorophyll content, canopy photosynthesis, total dry matter, number of panicles, grain panicle-1 and grain yield showed significant increase over control by 46.2, 20.5, 31.1, 36.8, 86.0, 36.8, 29.0, 96.5 and 12.7%, respectively.”

✓ located verbatim in the source · abstract, characters 520–825 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

At 100 kg N ha−1, grain yield increased significantly over control by 12.7%.

Treatment
100 kg N ha−1e0
Outcome
grain yielde0
Direction
increasee0
Value
12.7%e0
Comparator
controle0

Not reportedSetting

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

t0

“Effect of Applied Nitrogen on Photosynthesis and Yield Parameters of Various Rice Cultivars”

✓ located verbatim in the source · title, characters 0–91 · show in text ↑
e0

“At 100 kg N ha−1 the leaf area index, photosynthesis, stomatal conductance, chlorophyll content, canopy photosynthesis, total dry matter, number of panicles, grain panicle-1 and grain yield showed significant increase over control by 46.2, 20.5, 31.1, 36.8, 86.0, 36.8, 29.0, 96.5 and 12.7%, respectively.”

✓ located verbatim in the source · abstract, characters 520–825 · show in text ↑

nitrogen · physiology: pigments · Oryza sativa (rice)Results differ

85 papers: 73 positive, 12 negative or no effect

72 papers in the same direction as this paper · 12 in the opposite direction

  1. no effect
  2. negative
  3. no effect

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nitrogen · physiology: gas exchange · Oryza sativa (rice)Positive and negative results

8 papers: 7 positive, 1 negative or no effect

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

  1. no effect
  2. positive
  3. positive

4 papers more in this group

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nitrogen · physiology: photosynthesis · Oryza sativa (rice)Positive and negative results

97 papers: 81 positive, 16 negative or no effect

80 papers in the same direction as this paper · 13 in the opposite direction · 3 reporting no difference from an alternative

  1. negative
  2. negative
  3. negative

93 papers more in this group

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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

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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. negative
  2. negative
  3. negative

2,041 papers more in this group

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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.