Abstract
This study comparatively evaluates the phosphorus (P) requirement of safflower (Carthamus tinctorius L.) and sunflower (Helianthus annuus L.) in view of identifying low input oil crops. Both species responded strongly to increasing P supply with respect to plant growth and yield. Yield component analysis revealed that oil yield in safflower was affected by P deficiency mainly via the number of capitula per plant followed, in consecutive order, by the number of achenes per capitulum and the single achene mass (SAM). The major yield component influencing oil yield of sunflower was the number of achenes per plant, followed by the SAM. Contribution of the seed oil concentration to overall yield variation was insignificant for both species. Path coefficient analyses indicate that in sunflower total nitrogen (N) accumulated was found to be most important, while in safflower this holds true for both the total P and N accumulated. It was concluded that safflower cannot be considered a low-input oil crop in terms of its P requirement.
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Claims 12
Claim · model-written summary
Safflower growth and yield responded strongly to increasing phosphorus supply.
- Taxon
- safflower
Carthamus tinctoriuse1 - Treatment
- increasing P supplye0
- Outcome
- plant growth and yielde0
- Direction
- responded stronglye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both species responded strongly to increasing P supply with respect to plant growth and yield.”
e1“safflower (Carthamus tinctorius L.)”
Claim · model-written summary
Sunflower growth and yield responded strongly to increasing phosphorus supply.
- Taxon
- sunflower
Helianthus annuuse1 - Treatment
- increasing P supplye0
- Outcome
- plant growth and yielde0
- Direction
- responded stronglye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both species responded strongly to increasing P supply with respect to plant growth and yield.”
e1“sunflower (Helianthus annuus L.)”
Claim · model-written summary
Under phosphorus deficiency, capitula number per plant was the principal yield component affecting safflower oil yield.
- Taxon
- safflowerCarthamus tinctoriuse0
- Treatment
- P deficiencye0
- Outcome
- oil yielde0
- Qualifier
- number of capitula per plante0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“oil yield in safflower was affected by P deficiency mainly via the number of capitula per plant”
Claim · model-written summary
Achenes per capitulum was the next most influential component of safflower oil yield under phosphorus deficiency.
- Taxon
- safflowerCarthamus tinctoriuse0
- Treatment
- P deficiencye0
- Outcome
- oil yielde0
- Qualifier
- number of achenes per capitulume0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“oil yield in safflower was affected by P deficiency mainly via the number of capitula per plant followed, in consecutive order, by the number of achenes per capitulum”
Claim · model-written summary
Single achene mass was the third ranked component of safflower oil yield under phosphorus deficiency.
- Taxon
- safflowerCarthamus tinctoriuse0
- Treatment
- P deficiencye0
- Outcome
- oil yielde0
- Qualifier
- single achene masse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“oil yield in safflower was affected by P deficiency mainly via the number of capitula per plant followed, in consecutive order, by the number of achenes per capitulum and the single achene mass (SAM)”
Claim · model-written summary
Achenes per plant was the major yield component influencing sunflower oil yield.
- Taxon
- sunflowerHelianthus annuuse0
- Organ / stage
- achenes per plante0
- Outcome
- oil yielde0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The major yield component influencing oil yield of sunflower was the number of achenes per plant”
Claim · model-written summary
Single achene mass was the next ranked component influencing sunflower oil yield.
- Taxon
- sunflowerHelianthus annuuse0
- Organ / stage
- SAMe0
- Outcome
- oil yielde0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The major yield component influencing oil yield of sunflower was the number of achenes per plant, followed by the SAM”
Claim · model-written summary
Seed oil concentration contributed insignificantly to overall yield variation in safflower.
- Taxon
- safflowerCarthamus tinctoriuse1
- Organ / stage
- seede0
- Outcome
- overall yield variatione0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Contribution of the seed oil concentration to overall yield variation was insignificant for both species.”
e1“safflower (Carthamus tinctorius L.)”
Claim · model-written summary
Seed oil concentration contributed insignificantly to overall yield variation in sunflower.
- Taxon
- sunflowerHelianthus annuuse1
- Organ / stage
- seede0
- Outcome
- overall yield variatione0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Contribution of the seed oil concentration to overall yield variation was insignificant for both species.”
e1“sunflower (Helianthus annuus L.)”
Claim · model-written summary
Total nitrogen accumulated was the most important variable in sunflower path coefficient analysis.
- Taxon
- sunflowerHelianthus annuuse0
- Compound
- nitrogene0
- Outcome
- total nitrogen (N) accumulatede0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in sunflower total nitrogen (N) accumulated was found to be most important”
Claim · model-written summary
Total phosphorus and nitrogen accumulated were both important in safflower path coefficient analysis.
- Taxon
- safflowerCarthamus tinctoriuse0
- Compound
- P and Ne0
- Outcome
- total P and N accumulatede0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in safflower this holds true for both the total P and N accumulated”
e1“in sunflower total nitrogen (N) accumulated was found to be most important”
Claim · model-written summary
The authors concluded that safflower cannot be considered a low-input oil crop with respect to phosphorus requirement.
- Taxon
- safflowerCarthamus tinctoriuse0
- Outcome
- cannot be considered a low-input oil crope0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“safflower cannot be considered a low-input oil crop in terms of its P requirement”
The same questions in other papers
phosphorus · yield · Helianthus annuus (common sunflower)Results differ
78 papers in the same direction as this paper · 2 in the opposite direction
- positive
- no effect
- no effect
77 papers more in this group
See all 81 papers →phosphorus · yield · Carthamus tinctorius (safflower)Results agree
10 papers in the same direction as this paper
- positive
- positive
- positive
7 papers more in this group
See all 11 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.