Abstract
The objective of the reported vegetation experiment, established in 2008-2011, was to explore the effect of the date of foliar boron application on the yield and quality of sunflower. Four treatments were established in the experiment: 1) control – not fertilised with boron; 2) application of 300 g B ha–1 in the growing stage of 4 developed leaves (V-4); 3) application of 300 g B ha–1 at the beginning of elongation growth (R-1); and 4) split rate of boron application of 150 g B ha–1 at stage V-4 (4 developed leaves) and 150 g B ha–1 at stage R-1 (terminal bud forms). Foliar nutrition with boron increased the content of this element in leaves and stems, and raised the biomass production of sunflower plants. The increased uptake of nutrients by plants was essential for achene production. Application of boron fertilizer at stage V-4 increased the N content in the plant. Boron had a considerable effect on achene production. The highest increase in yields was related to the foliar boron application at stage V-4 (by 8.3% relatively). The relative increase in the oil content in response to boron application, which ranged within 1-2%, was not significant. The higher yields and a constant oil content increased oil production, most markedly after the boron foliar application at stage V-4 (by 10.2% ). It was only the content of stearic acid that was increased significantly by foliar application of B at stage V-4 and split application (by 8.8% and 9.4%, respectively).
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Claims 9
Claim · model-written summary
Foliar boron increased the boron content of sunflower leaves and stems.
- Taxon
- sunflower
Helianthus annuuse0 - Organ / stage
- leaves and stemse2
- Treatment
- Foliar nutrition with borone2
- Outcome
- content of this elemente2
- Direction
- increasede2
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“to explore the effect of the date of foliar boron application on the yield and quality of sunflower”
e1“control – not fertilised with boron”
e2“Foliar nutrition with boron increased the content of this element in leaves and stems, and raised the biomass production of sunflower plants”
Claim · model-written summary
Foliar boron raised sunflower biomass production.
- Taxon
- sunflowerHelianthus annuuse0
- Treatment
- Foliar nutrition with borone2
- Outcome
- biomass productione2
- Direction
- raisede2
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“to explore the effect of the date of foliar boron application on the yield and quality of sunflower”
e1“control – not fertilised with boron”
e2“Foliar nutrition with boron increased the content of this element in leaves and stems, and raised the biomass production of sunflower plants”
Claim · model-written summary
Boron had a considerable effect on sunflower achene production.
- Taxon
- sunflowerHelianthus annuuse0
- Treatment
- Borone6
- Outcome
- achene productione6
- Qualifier
- considerable effecte6
- Comparator
- controle1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“to explore the effect of the date of foliar boron application on the yield and quality of sunflower”
e1“control – not fertilised with boron”
e6“Boron had a considerable effect on achene production”
Claim · model-written summary
Foliar boron at stage V-4 gave the highest sunflower yield increase, by 8.3%.
- Taxon
- sunflowerHelianthus annuuse0
- Treatment
- foliar boron application at stage V-4e3
- Outcome
- yieldse3
- Direction
- increasee3
- Value
- 8.3%e3
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“to explore the effect of the date of foliar boron application on the yield and quality of sunflower”
e1“control – not fertilised with boron”
e3“The highest increase in yields was related to the foliar boron application at stage V-4 (by 8.3% relatively)”
Claim · model-written summary
The relative increase in sunflower oil content from boron application was not significant, within 1-2%.
- Taxon
- sunflowerHelianthus annuuse0
- Treatment
- boron applicatione4
- Outcome
- oil contente4
- Direction
- increasee4
- Value
- 1-2%e4
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“to explore the effect of the date of foliar boron application on the yield and quality of sunflower”
e1“control – not fertilised with boron”
e4“The relative increase in the oil content in response to boron application, which ranged within 1-2%, was not significant”
Claim · model-written summary
Foliar boron at stage V-4 increased sunflower oil production by 10.2%, most markedly.
- Taxon
- sunflowerHelianthus annuuse0
- Treatment
- boron foliar application at stage V-4e5
- Outcome
- oil productione5
- Direction
- increasede5
- Value
- 10.2%e5
- Qualifier
- most markedlye5
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“to explore the effect of the date of foliar boron application on the yield and quality of sunflower”
e1“control – not fertilised with boron”
e5“The higher yields and a constant oil content increased oil production, most markedly after the boron foliar application at stage V-4 (by 10.2% )”
Claim · model-written summary
Foliar boron at stage V-4 significantly increased stearic acid content by 8.8%.
- Taxon
- sunflowerHelianthus annuuse0
- Treatment
- foliar application of B at stage V-4e7
- Outcome
- content of stearic acide7
- Direction
- increasede7
- Value
- 8.8%e7
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“to explore the effect of the date of foliar boron application on the yield and quality of sunflower”
e1“control – not fertilised with boron”
e7“It was only the content of stearic acid that was increased significantly by foliar application of B at stage V-4 and split application (by 8.8% and 9.4%, respectively)”
Claim · model-written summary
Split foliar boron application significantly increased stearic acid content by 9.4%.
- Taxon
- sunflowerHelianthus annuuse0
- Treatment
- split applicatione7
- Outcome
- content of stearic acide7
- Direction
- increasede7
- Value
- 9.4%e7
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“to explore the effect of the date of foliar boron application on the yield and quality of sunflower”
e1“control – not fertilised with boron”
e7“It was only the content of stearic acid that was increased significantly by foliar application of B at stage V-4 and split application (by 8.8% and 9.4%, respectively)”
Claim · model-written summary
Boron fertilizer applied at stage V-4 increased plant N content.
- Taxon
- sunflowerHelianthus annuuse0
- Treatment
- Application of boron fertilizer at stage V-4e7
- Outcome
- N contente7
- Direction
- increasede7
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“to explore the effect of the date of foliar boron application on the yield and quality of sunflower”
e1“control – not fertilised with boron”
e7“Application of boron fertilizer at stage V-4 increased the N content in the plant”
The same questions in other papers
boron atom · quality: oil · Helianthus annuus (common sunflower)Results differ
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- positive
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151 papers in the same direction as this paper · 5 in the opposite direction · 1 reporting no difference from an alternative
- no effect
- no effect
- negative
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See all 158 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.