Abstract
The safflower (Carthamus tinctorius L.), in particular, has been soaring in significance as an alternative for oil and biodiesel production. In this context, the goal of this study was to assess the influence exerted by phosphate fertilization on the phytometric and productive characteristics of the safflower raised on the Oxisol of the Cerrado. The experiment was performed in a greenhouse, using pots of 3 dm-3 in volume. Adopting the completely randomized design, five doses of phosphorus (P2O5: 0, 90, 180, 360 and 540 mg·dm-3) and six replicates were included. The following variables were estimated, viz., number of leaves, plant height, and stem diameter, besides chlorophyll index (SPAD index), number of chapters and shoot dry matter. Barring the shoot dry matter and number of chapters, all the other variables were evaluated on days 30 and 45 after the plants were transplanted. Data were submitted to analysis of variance at 1%, 5% and 10% probabilities, and regression analysis, at 1% and 5% probabilities, respectively. All the variables revealed significant differences and adjustments to the linear regression model (P .76 for chlorophyll index, 5 units for the number of chapters and 3.45 g for dry shoot mass were recorded in response to the highest phosphorus dose in the experimental range (P2O5: 540 mg·dm-3). Phosphate fertilization was observed to affect the phytometric characteristics and boost the development of the safflower plants cultivated in the Cerrado Oxisol, substantiating that safflower could be a viable cash crop that can be established in the Brazilian Cerrado.
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Claims 6
Claim · model-written summary
Phosphorus doses significantly affected leaf number, height and stem diameter, with linear regression fits.
- Taxon
- Safflower
Carthamus tinctoriust0 - Treatment
- phosphoruse2
- Outcome
- number of leaves, plant height, and stem diametere0
- Setting
- greenhousee3
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“number of leaves, plant height, and stem diameter”
e1“All the variables revealed significant differences and adjustments to the linear regression model”
e2“five doses of phosphorus (P2O5: 0, 90, 180, 360 and 540 mg·dm-3)”
t0“Safflower”
e3“The experiment was performed in a greenhouse”
Claim · model-written summary
Phosphorus doses significantly affected chlorophyll index, chapter number and shoot dry matter, with linear regression fits.
- Taxon
- SafflowerCarthamus tinctoriust0
- Treatment
- phosphoruse2
- Outcome
- chlorophyll index (SPAD index), number of chapters and shoot dry mattere0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“chlorophyll index (SPAD index), number of chapters and shoot dry matter”
e1“All the variables revealed significant differences and adjustments to the linear regression model”
e2“five doses of phosphorus (P2O5: 0, 90, 180, 360 and 540 mg·dm-3)”
t0“Safflower”
Claim · model-written summary
The highest phosphorus dose produced five chapters.
- Taxon
- SafflowerCarthamus tinctoriust0
- Treatment
- P2O5: 540 mg·dm-3e0
- Outcome
- number of chapterse0
- Value
- 5 unitse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“5 units for the number of chapters and 3.45 g for dry shoot mass were recorded in response to the highest phosphorus dose in the experimental range (P2O5: 540 mg·dm-3).”
t0“Safflower”
Claim · model-written summary
The highest phosphorus dose produced 3.45 g dry shoot mass.
- Taxon
- SafflowerCarthamus tinctoriust0
- Treatment
- P2O5: 540 mg·dm-3e0
- Outcome
- dry shoot masse0
- Value
- 3.45 ge0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“3.45 g for dry shoot mass were recorded in response to the highest phosphorus dose in the experimental range (P2O5: 540 mg·dm-3).”
t0“Safflower”
Claim · model-written summary
Phosphate fertilization boosted safflower development in Cerrado Oxisol.
- Taxon
- safflowerCarthamus tinctoriuse0
- Treatment
- Phosphate fertilizatione0
- Outcome
- developmente0
- Direction
- booste0
- Setting
- Cerrado Oxisole0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Phosphate fertilization was observed to affect the phytometric characteristics and boost the development of the safflower plants cultivated in the Cerrado Oxisol”
Claim · model-written summary
The authors conclude safflower could be a viable cash crop in the Brazilian Cerrado.
- Taxon
- safflowerCarthamus tinctoriuse0
- Outcome
- viable cash crope0
- Setting
- Brazilian Cerradoe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“safflower could be a viable cash crop that can be established in the Brazilian Cerrado.”
The same questions in other papers
phosphate · growth · Carthamus tinctorius (safflower)Positive and negative results
1 in the opposite direction
- no effect
fertilization · growth · Carthamus tinctorius (safflower)Positive and negative results
33 papers in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- no effect
32 papers more in this group
See all 36 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.