Paper · 2007 · Pakistan Journal of Biological Sciences

Effects of Nitrogen and Potassium Fertilizers on Rice (Oryza sativa L.) Genotypes Processing Characteristics

M.A. Bahmaniar; G.A. Ranjbar

9
claims
20
verbatim quotes
8
citations
1
research areas
✓
Open access

Abstract

In order to consider effects of various levels of nitrogen and potassium application on kernel processing characteristics of rice cultivars, an experiment was developed in 2004 and 2005 using Tarrom (a local Iranian landrace) and Neda (an Iranian improved cultivar). In this experiment four levels of nitrogen fertilizer (0, 50, 100 and 150 kg N ha(-1) from urea source) and four levels of potassium fertilizer (0, 75, 150 and 225 kg K2O ha(-1) from potassium sulfate source) have been applied using a split factorial design with 3 replications. Nitrogen fertilizer have been applied in three stages (1/3 in transplanting stage, 1/3 in tillering stage and finally 1/3 in flowering initiation stage) and potassium fertilizer have been applied in two stages (1/2 in transplanting stage and 1/2 in shooting stage). Results showed that application of nitrogen cause an increase in amount of bran production and have shown significant effects on percentages of bran, head and brewers rice, husking efficiency and transformation degree. However, potassium application has increased percent of bran and husking efficiency and has decrease percentages of brewers rice and has not demonstrated significant effects on percentages of husk, head rice and transformation degree. Furthermore, simultaneous application of nitrogen and potassium in Tarrom genotype has not shown significantly effects on percentages of husk, head and brewers rice and transformation degree. In Neda, cultivar has not also shown significant effects on percentages of bran production, head and brewers rice and husking efficiency, respectively. In Tarrom genotype amount of husk, bran, brewers rice and transformation degree were higher than in Neda cultivar, however, amount of head rice and husking efficiency in Neda cultivar were higher than in Tarrom genotype.

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Claims 9

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Nitrogen increased bran production.

Treatment
nitrogene0
Outcome
amount of bran productione0
Direction
increasee0

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

“application of nitrogen cause an increase in amount of bran production”

✓ located verbatim in the source · abstract, characters 832–902 · show in text ↑
t0

“Rice (Oryza sativa L.)”

✓ located verbatim in the source · title, characters 49–71 · show in text ↑
Intervention effectobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Nitrogen significantly affected bran, head and brewers rice percentages, husking efficiency and transformation degree.

Treatment
nitrogene1
Outcome
percentages of bran, head and brewers rice, husking efficiency and transformation degreee0

Not reportedComparatorDirection

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

“have shown significant effects on percentages of bran, head and brewers rice, husking efficiency and transformation degree”

✓ located verbatim in the source · abstract, characters 907–1029 · show in text ↑
e1

“application of nitrogen cause an increase”

✓ located verbatim in the source · abstract, characters 832–873 · show in text ↑
t0

“Rice (Oryza sativa L.)”

✓ located verbatim in the source · title, characters 49–71 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Potassium increased bran percentage and husking efficiency.

Treatment
potassium applicatione0
Outcome
percent of bran and husking efficiencye0
Direction
increasede0

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

“potassium application has increased percent of bran and husking efficiency”

✓ located verbatim in the source · abstract, characters 1040–1114 · show in text ↑
t0

“Rice (Oryza sativa L.)”

✓ located verbatim in the source · title, characters 49–71 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Potassium decreased brewers rice percentage.

Treatment
potassium applicatione0
Outcome
percentages of brewers ricee0
Direction
decreasee0

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

“potassium application has increased percent of bran and husking efficiency and has decrease percentages of brewers rice”

✓ located verbatim in the source · abstract, characters 1040–1159 · show in text ↑
t0

“Rice (Oryza sativa L.)”

✓ located verbatim in the source · title, characters 49–71 · show in text ↑
Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Potassium had no significant effect on husk, head rice and transformation degree percentages.

Treatment
potassium applicatione0
Outcome
percentages of husk, head rice and transformation degreee0
Direction
has not demonstrated significant effectse0

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

“potassium application has increased percent of bran and husking efficiency and has decrease percentages of brewers rice and has not demonstrated significant effects on percentages of husk, head rice and transformation degree”

✓ located verbatim in the source · abstract, characters 1040–1264 · show in text ↑
t0

“Rice (Oryza sativa L.)”

✓ located verbatim in the source · title, characters 49–71 · show in text ↑
Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Combined nitrogen and potassium had no significant effect on four processing traits in Tarrom.

Material
Tarrome0
Treatment
simultaneous application of nitrogen and potassiume0
Outcome
percentages of husk, head and brewers rice and transformation degreee0
Direction
has not shown significantly effectse0

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

“simultaneous application of nitrogen and potassium in Tarrom genotype has not shown significantly effects on percentages of husk, head and brewers rice and transformation degree”

✓ located verbatim in the source · abstract, characters 1279–1456 · show in text ↑
t0

“Rice (Oryza sativa L.)”

✓ located verbatim in the source · title, characters 49–71 · show in text ↑
Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Combined fertilizer application had no significant effect on four processing traits in Neda.

Material
Nedae0
Treatment
simultaneous application of nitrogen and potassiume1
Outcome
percentages of bran production, head and brewers rice and husking efficiencye0
Direction
has not also shown significant effectse0

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

“In Neda, cultivar has not also shown significant effects on percentages of bran production, head and brewers rice and husking efficiency”

✓ located verbatim in the source · abstract, characters 1458–1594 · show in text ↑
e1

“simultaneous application of nitrogen and potassium”

✓ located verbatim in the source · abstract, characters 1279–1329 · show in text ↑
t0

“Rice (Oryza sativa L.)”

✓ located verbatim in the source · title, characters 49–71 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Tarrom exceeded Neda in husk, bran, brewers rice and transformation degree.

Material
Tarrome0
Outcome
amount of husk, bran, brewers rice and transformation degreee0
Direction
highere0
Comparator
Nedae0

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

“In Tarrom genotype amount of husk, bran, brewers rice and transformation degree were higher than in Neda cultivar”

✓ located verbatim in the source · abstract, characters 1610–1723 · show in text ↑
t0

“Rice (Oryza sativa L.)”

✓ located verbatim in the source · title, characters 49–71 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Neda exceeded Tarrom in head rice and husking efficiency.

Material
Nedae0
Outcome
amount of head rice and husking efficiencye0
Direction
highere0
Comparator
Tarrome0

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

“amount of head rice and husking efficiency in Neda cultivar were higher than in Tarrom genotype”

✓ located verbatim in the source · abstract, characters 1734–1829 · show in text ↑
t0

“Rice (Oryza sativa L.)”

✓ located verbatim in the source · title, characters 49–71 · show in text ↑

potassium · organism · Oryza sativa (rice)Positive and negative results

8 papers: 6 positive, 2 negative or no effect

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

  1. positive
  2. positive
  3. positive

4 papers more in this group

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potassium · quality: grain · Oryza sativa (rice)Positive and negative results

13 papers: 12 positive, 1 negative or no effect

12 in the opposite direction

  1. positive
  2. positive
  3. positive

9 papers more in this group

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

61 papers: 45 positive, 16 negative or no effect

15 papers in the same direction as this paper · 45 in the opposite direction

  1. positive
  2. positive
  3. positive

57 papers more in this group

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

383 papers: 344 positive, 39 negative or no effect

38 papers in the same direction as this paper · 344 in the opposite direction

  1. positive
  2. positive
  3. positive

379 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. 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.