Paper · 1997 · Journal of the Indian Society of Soil Science

Effect of Fertilizer Nitrogen and Phosphorus on the Grain Yield, Nutrient Uptake and Oil Quality of Sunflower

Ankur Bahl; N. S. Pasricha; K. L. Ahuja

6
claims
12
verbatim quotes
17
citations
2
research areas
✓
Open access

Abstract

In field experiments conducted for three years significant yield response to N and P was observed up to 60 kg N and 30 kg P2O5 ha−1. Total N and P uptake also increased significantly with the applied nutrients. N application, in the absence of P, decreased oil percentage in sunflower seed. P application up to 30 kg P2O5 ha−1 resulted in significant increase in oil content. Oleic acid: linoleic acid ratio increased due to N application indicating improvement in stability and cooking quality of oil. Nitrogen seems to playa vital role in increasing the proportion of unsaturated fatty acids which is a major factor determining the quality of sunflower oil.

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Claims 6

Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Sunflower grain yield showed a significant response to N and P up to 60 kg N and 30 kg P2O5 ha-1 in three years of field experiments.

Taxon
SunflowerHelianthus annuust0
Treatment
N and Pe1
Outcome
yield responsee1
Direction
increaseinferrede1
Qualifier
up to 60 kg N and 30 kg P2O5 ha−1e1
Setting
field experimentse0

Not reportedComparator

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

Helianthus annuus
Helianthus annuus · TaxonJon Sullivan · Public domain · Wikimedia Commons ↗

Verbatim

t0

“Oil Quality of Sunflower”

✓ located verbatim in the source · title, characters 85–109 · show in text ↑
e0

“In field experiments conducted for three years”

✓ located verbatim in the source · abstract, characters 0–46 · show in text ↑
e1

“significant yield response to N and P was observed up to 60 kg N and 30 kg P2O5 ha−1”

✓ located verbatim in the source · abstract, characters 47–131 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

N application in the absence of P decreased sunflower seed oil percentage.

Taxon
sunflowerHelianthus annuuse2
Treatment
N applicatione2
Outcome
oil percentagee2
Direction
decreasede2
Qualifier
in the absence of Pe2

Not reportedComparator

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

Helianthus annuus
Helianthus annuus · TaxonJon Sullivan · Public domain · Wikimedia Commons ↗

Verbatim

e2

“N application, in the absence of P, decreased oil percentage in sunflower seed”

✓ located verbatim in the source · abstract, characters 211–289 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

P application up to 30 kg P2O5 ha-1 significantly increased sunflower oil content.

Taxon
SunflowerHelianthus annuust0
Treatment
P applicatione3
Outcome
oil contente3
Direction
increasee3
Qualifier
up to 30 kg P2O5 ha−1e3

Not reportedComparator

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

Helianthus annuus
Helianthus annuus · TaxonJon Sullivan · Public domain · Wikimedia Commons ↗

Verbatim

t0

“Oil Quality of Sunflower”

✓ located verbatim in the source · title, characters 85–109 · show in text ↑
e3

“P application up to 30 kg P2O5 ha−1 resulted in significant increase in oil content”

✓ located verbatim in the source · abstract, characters 291–374 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

N application increased the oleic acid to linoleic acid ratio of sunflower oil, indicating better stability and cooking quality.

Taxon
SunflowerHelianthus annuust0
Treatment
N applicatione4
Outcome
Oleic acid: linoleic acid ratioe4
Direction
increasede4

Not reportedComparator

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

Helianthus annuus
Helianthus annuus · TaxonJon Sullivan · Public domain · Wikimedia Commons ↗

Verbatim

t0

“Oil Quality of Sunflower”

✓ located verbatim in the source · title, characters 85–109 · show in text ↑
e4

“Oleic acid: linoleic acid ratio increased due to N application indicating improvement in stability and cooking quality of oil”

✓ located verbatim in the source · abstract, characters 376–501 · show in text ↑
Associationauthor interpretationoriginal resultpositivemeasured

Claim · model-written summary

Nitrogen seems to increase the proportion of unsaturated fatty acids in sunflower oil.

Taxon
SunflowerHelianthus annuust0
Treatment
Nitrogene5
Outcome
proportion of unsaturated fatty acidse5
Direction
increasinge5

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

Helianthus annuus
Helianthus annuus · TaxonJon Sullivan · Public domain · Wikimedia Commons ↗

Verbatim

t0

“Oil Quality of Sunflower”

✓ located verbatim in the source · title, characters 85–109 · show in text ↑
e5

“Nitrogen seems to playa vital role in increasing the proportion of unsaturated fatty acids”

✓ located verbatim in the source · abstract, characters 503–593 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Total N and P uptake of sunflower increased significantly with the applied nutrients.

Taxon
SunflowerHelianthus annuust0
Treatment
applied nutrientse6
Outcome
Total N and P uptakee6
Direction
increasede6

Not reportedComparator

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

Helianthus annuus
Helianthus annuus · TaxonJon Sullivan · Public domain · Wikimedia Commons ↗

Verbatim

t0

“Oil Quality of Sunflower”

✓ located verbatim in the source · title, characters 85–109 · show in text ↑
e6

“Total N and P uptake also increased significantly with the applied nutrients”

✓ located verbatim in the source · abstract, characters 133–209 · show in text ↑

phosphorus · quality: oil · Helianthus annuus (common sunflower)Results differ

22 papers: 21 positive, 1 negative or no effect

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

  1. no effect
  2. positive
  3. positive

18 papers more in this group

See all 22 papers →

nitrogen · quality: oil · Helianthus annuus (common sunflower)Results differ

51 papers: 40 positive, 11 negative or no effect

39 papers in the same direction as this paper · 10 in the opposite direction · 1 reporting no difference from an alternative

  1. negative
  2. negative
  3. negative

47 papers more in this group

See all 51 papers →

phosphorus · yield · Helianthus annuus (common sunflower)Results differ

81 papers: 79 positive, 2 negative or no effect

78 papers in the same direction as this paper · 2 in the opposite direction

  1. positive
  2. no effect
  3. no effect

77 papers more in this group

See all 81 papers →

nitrogen · yield · Helianthus annuus (common sunflower)Positive and negative results

196 papers: 182 positive, 14 negative or no effect

181 papers in the same direction as this paper · 10 in the opposite direction · 4 reporting no difference from an alternative

  1. positive
  2. positive
  3. positive

192 papers more in this group

See all 196 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.