Paper · 2018 · Journal of Pharmacognosy and Phytochemistry

Performance of various rice cultivars under variable nitrogen levels

Kamal Kant; P. K. Bora; S. G. Telkar; et al.

10
claims
20
verbatim quotes
2
citations
1
research areas
✓
Open access

Abstract

A field experiment was conducted the Research Farm of College of Post-Graduate Studies, Umiam, Meghalaya during kharif season of 2016 following Factorial Randomized Block Design with three replications. The soil of the experimental site was sandy clay loam soil in texture having pH 4.82, organic carbon 3.28%, Available N, P and K was 359.9, 17.6 and 196.4 kg ha-1, respectively. Three rice cultivars (CAU-R1, Shahsarang1 and Lumpnah1) were grown with four nitrogen levels (60, 80, 100 and 120 kg N ha-1) for the study. Shahsarang1 recorded significantly higher plant height over the CAU-R1 and at par with Lumpnah1. Shahsarang1 was significantly more tillers per hill over Lumpnah1 and at par with CAU-R1 at 90 DAT and at harvest. The dry weight of Shahsarang1 showed significant superiority at 90 DAT and at harvest over others. Leaf area and leaf area index of Shahsarang1 was significantly superiority over CAU-R1 at all the stages and at par with Lumpnah1 at 90 DAT. Shahsarang1 recorded maximum panicle length over Lumpnah1 and at par with CAU-R1. Test weight was maximum in CAU-R1 which was significantly higher over Shahsarang1 and at par with Lumpnah1. Highest grain yield and biological yield were obtained from Shahsarang1 which was significantly superior over Lumpnah1 and CAU-R1, Grain yield of CAU-R1 was at par with Shahsarang1. At 30 DAT and 60 DAT, 120 kg N ha-1 showed significantly higher leaf area over the 60 and 80 kg N ha-1 and at par with 100 kg N ha-1. However, most of the growth parameters had not shown statistically significant difference but increased with each level of nitrogen resulting increase in plant height, tillers hill-1, leaf area, leaf area index and dry matter production, higher values were recorded at 120 kg N ha-1 compared to 60 kg N ha-1. Number of filled grain panicle-1 was highest at 120 kg N ha-1 which was significantly superior over 60 kg N ha-1. However, Nitrogen level 120 kg ha-1 at par with 100 and 80 kg N ha-1.

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Claims 10

Observationobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Shahsarang1 had greater height than CAU-R1 and was comparable to Lumpnah1.

Material
Shahsarang1e0
Outcome
plant heighte0
Direction
highere0
Comparator
CAU-R1e0

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

“Shahsarang1 recorded significantly higher plant height over the CAU-R1 and at par with Lumpnah1.”

✓ located verbatim in the source · abstract, characters 521–617 · show in text ↑
t0

“rice”

✓ located verbatim in the source · title, characters 23–27 · show in text ↑
Observationobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Shahsarang1 had more tillers per hill than Lumpnah1 at 90 DAT and harvest.

Material
Shahsarang1e0
Outcome
tillers per hille0
Direction
moree0
Qualifier
90 DAT and at harveste0
Comparator
Lumpnah1e0

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

“Shahsarang1 was significantly more tillers per hill over Lumpnah1 and at par with CAU-R1 at 90 DAT and at harvest.”

✓ located verbatim in the source · abstract, characters 618–732 · show in text ↑
t0

“rice”

✓ located verbatim in the source · title, characters 23–27 · show in text ↑
Observationobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Shahsarang1 dry weight exceeded the other cultivars at 90 DAT and harvest.

Material
Shahsarang1e0
Outcome
dry weighte0
Direction
superioritye0
Qualifier
90 DAT and at harveste0
Comparator
otherse0

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

“The dry weight of Shahsarang1 showed significant superiority at 90 DAT and at harvest over others.”

✓ located verbatim in the source · abstract, characters 733–831 · show in text ↑
t0

“rice”

✓ located verbatim in the source · title, characters 23–27 · show in text ↑
Observationobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Shahsarang1 leaf area and leaf area index exceeded CAU-R1 at all stages.

Material
Shahsarang1e0
Outcome
Leaf area and leaf area indexe0
Direction
superioritye0
Qualifier
all the stagese0
Comparator
CAU-R1e0

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

“Leaf area and leaf area index of Shahsarang1 was significantly superiority over CAU-R1 at all the stages and at par with Lumpnah1 at 90 DAT.”

✓ located verbatim in the source · abstract, characters 832–972 · show in text ↑
t0

“rice”

✓ located verbatim in the source · title, characters 23–27 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Shahsarang1 had maximum panicle length relative to Lumpnah1.

Material
Shahsarang1e0
Outcome
panicle lengthe0
Direction
maximume0
Comparator
Lumpnah1e0

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

“Shahsarang1 recorded maximum panicle length over Lumpnah1 and at par with CAU-R1.”

✓ located verbatim in the source · abstract, characters 973–1054 · show in text ↑
t0

“rice”

✓ located verbatim in the source · title, characters 23–27 · show in text ↑
Observationobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

CAU-R1 had the maximum test weight and exceeded Shahsarang1 significantly.

Material
CAU-R1e0
Outcome
Test weighte0
Direction
highere0
Comparator
Shahsarang1e0

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

“Test weight was maximum in CAU-R1 which was significantly higher over Shahsarang1 and at par with Lumpnah1.”

✓ located verbatim in the source · abstract, characters 1055–1162 · show in text ↑
t0

“rice”

✓ located verbatim in the source · title, characters 23–27 · show in text ↑
Observationobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Shahsarang1 gave the highest grain and biological yields relative to the other cultivars.

Material
Shahsarang1e0
Outcome
grain yield and biological yielde0
Direction
Higheste0
Comparator
Lumpnah1 and CAU-R1e0

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

“Highest grain yield and biological yield were obtained from Shahsarang1 which was significantly superior over Lumpnah1 and CAU-R1, Grain yield of CAU-R1 was at par with Shahsarang1.”

✓ located verbatim in the source · abstract, characters 1163–1344 · show in text ↑
t0

“rice”

✓ located verbatim in the source · title, characters 23–27 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

At 30 and 60 DAT, 120 kg N ha-1 increased leaf area relative to 60 and 80 kg N ha-1.

Treatment
120 kg N ha-1e0
Outcome
leaf areae0
Direction
highere0
Qualifier
30 DAT and 60 DATe0
Comparator
60 and 80 kg N ha-1e0

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

“At 30 DAT and 60 DAT, 120 kg N ha-1 showed significantly higher leaf area over the 60 and 80 kg N ha-1 and at par with 100 kg N ha-1.”

✓ located verbatim in the source · abstract, characters 1345–1478 · show in text ↑
t0

“rice”

✓ located verbatim in the source · title, characters 23–27 · show in text ↑
Intervention effectobservedoriginal resultpositivenot significant (as stated)measured

Claim · model-written summary

Most growth parameters increased with nitrogen rate, with higher values at 120 than 60 kg N ha-1 but no significant difference.

Treatment
120 kg N ha-1e0
Outcome
plant height, tillers hill-1, leaf area, leaf area index and dry matter productione0
Direction
highere0
Comparator
60 kg N ha-1e0

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

“most of the growth parameters had not shown statistically significant difference but increased with each level of nitrogen resulting increase in plant height, tillers hill-1, leaf area, leaf area index and dry matter production, higher values were recorded at 120 kg N ha-1 compared to 60 kg N ha-1.”

✓ located verbatim in the source · abstract, characters 1488–1787 · show in text ↑
t0

“rice”

✓ located verbatim in the source · title, characters 23–27 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Filled grains per panicle were highest at 120 kg N ha-1, significantly above 60 kg N ha-1.

Treatment
120 kg N ha-1e0
Outcome
Number of filled grain panicle-1e0
Direction
higheste0
Comparator
60 kg N ha-1e0

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

“Number of filled grain panicle-1 was highest at 120 kg N ha-1 which was significantly superior over 60 kg N ha-1.”

✓ located verbatim in the source · abstract, characters 1788–1901 · show in text ↑
t0

“rice”

✓ located verbatim in the source · title, characters 23–27 · show in text ↑

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.