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“yield decrease”

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Organism: Helianthus annuus ✕

Intervention effectobservedoriginal resultnegativenot significant (as stated)measured

Claim · model-written summary

R453 grain yield tended to decrease with increased soil nitrogen.

Taxon: SunflowerHelianthus annuust0
Material: R453e0
Treatment: nitrogen availability was increasede0
Outcome: grain yielde0
Direction: decreasee0
Qualifier: a tendencye0

Not reportedComparator

Verbatim

e0
“R453 genotype did not show significant differences under varying nitrogen availability and exhibited a tendency to decrease grain yield when nitrogen availability was increased”
✓ located verbatim in the source · abstract, characters 1513–1689

t0
“Sunflower (Helianthus annuus L.)”
✓ located verbatim in the source · title, characters 88–120

Title

Ecophysiological and Molecular Analysis of Contrasting Genotypes for Leaf Senescence in Sunflower (Helianthus annuus L.) Under Differential Doses of N in Soil

Daniela E. Becheran; Melanie A. Corzo; Edmundo L. Ploschuk; et al. Plants 2024. doi:10.3390/plants13243540

Other claims from this paper (4)

Observation B481-6 delayed senescence starting at R5.5.
Intervention effect B481-6 intercepted more radiation with increased soil nitrogen.
Intervention effect B481-6 grain yield increased significantly with increased soil nitrogen.
Intervention effect R453 showed no significant differences across soil nitrogen levels.

Intervention effectobservedoriginal resultnegativenot significant (as stated)measured

Claim · model-written summary

Boron fertilization showed a nonsignificant trend toward lower sunflower yield than the check.

Taxon: sunflowerHelianthus annuuse0
Treatment: boron fertilizatione0
Outcome: sunflower yielde0
Direction: decreasee0
Comparator: checke0

Verbatim

e0
“Although sunflower yield from boron fertilization was not significantly different from the check, a trend was observed in which boron fertilization seemed to decrease sunflower yield.”
✓ located verbatim in the source · abstract, characters 461–644

Title

Effects of sulfur, zinc, iron, copper, manganese, and boron applications on sunflower yield and plant nutrient concentration

B. R. Hilton; J. C. Zubriski Communications in Soil Science and Plant Analysis 1985. doi:10.1080/00103628509367615

Other claims from this paper (8)

Intervention effect The six nutrient applications did not affect sunflower seed yield.
Intervention effect The six nutrient applications did not affect sunflower oil percentage.
Intervention effect Zn uptake at the 12-leaf stage responded significantly to fertilization.
Intervention effect Mn uptake at the 12-leaf stage responded significantly to fertilization.
Intervention effect B uptake at the 12-leaf stage responded significantly to fertilization.
Intervention effect Zinc fertilization increased Zn uptake in the uppermost mature leaf at anthesis.
Intervention effect Boron-treated plots had the lowest sunflower yields among seven treatments in three of four fields.
Intervention effect Combined across fields, boron reduced sunflower yield relative to iron and sulfur treatments.

Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Mixed cover crops did not significantly increase yield.

Taxon: sunflowerHelianthus annuuse1
Treatment: Mixtures of Brassicaceae and Fabaceaee0
Outcome: yieldse0
Direction: did not significantly decrease SVW or increasee0
Comparator: bare soile0

Verbatim

e0
“Mixtures of Brassicaceae and Fabaceae sowed at these densities resulted in an intermediate SMN level between those in sole crops and the bare soil and they did not significantly decrease SVW or increase yields.”
✓ located verbatim in the source · abstract, characters 1775–1985

e1
“sunflower yields after cover crops”
✓ located verbatim in the source · abstract, characters 1614–1648

Title

Ecosystem Services Provided by Cover Crops and Biofumigation in Sunflower Cultivation

Neila Ait Kaci Ahmed; Benoit Galaup; Jérémy Desplanques; et al. Agronomy 2022. doi:10.3390/agronomy12010120

Other claims from this paper (6)

Intervention effect Purple vetch increased soil mineral nitrogen before sunflower sowing in 2019.
Intervention effect Fodder radish reduced sunflower wilt severity overall at 80 days except in 2019.
Intervention effect Purple vetch reduced sunflower wilt severity in 2017 and 2020.
Intervention effect Sunflower yield after purple vetch was higher than after bare soil in 2020 by 0.77 t ha−1.
Intervention effect Mixed cover crops produced intermediate soil mineral nitrogen.
Intervention effect Mixed cover crops did not significantly reduce sunflower wilt.

Associationobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Seed yield did not increase significantly after the third foliar feeding.

Taxon: sunflowerHelianthus annuuse1
Treatment: third foliar feedinge2
Outcome: yielde2
Direction: did not increasee2

Verbatim

e1
“crops high oil sunflower hybrid Aurora AM”
✓ located verbatim in the source · abstract, characters 405–446

e2
“This trend is associated with a decrease in the oil content in the seeds after the third foliar feeding, while the yield did not increase significantly”
✓ located verbatim in the source · abstract, characters 2429–2580

Title

THE YIELD AND QUALITY OF SUNFLOWER SEEDS DEPEND ON THE PRE-SOWING TREATMENT OF THE SEEDS AND EXTRA-ROOT NUTRIENTS

Artur Rozhkov; Oleksandr Kalinov The Scientific and Technical Bulletin of the Institute of Animal Science NAAS of Ukraine 2024. doi:10.32900/2312-8402-2024-131-187-201

Other claims from this paper (18)

Intervention effect Pre-sowing seed treatment had a significant positive effect on sunflower yield.
Intervention effect The mixture pre-sowing treatment gave the highest sunflower seed yield, 2.66 tons/hectare.
Intervention effect The mixture pre-sowing treatment raised sunflower seed yield by 0.3 tons/hectare (12.7 %) over the control version.
Observation Sunflower seed yield of the mixture pre-sowing variant was 2.37 and 2.94 tons/hectare in 2022 and 2023.
Intervention effect In 2022 and 2023 the mixture pre-sowing variant yielded 0.27 and 0.32 tons/hectare more than the NIR05 control.
Intervention effect Optimized pre-sowing seed treatment and foliar fertilization increased two-year average sunflower seed yield by 0.45 tons/hectare or almost 20.0%.
Recommendation The authors recommend more attention to pre-sowing seed treatment and foliar feeding for sunflower.
Intervention effect The largest oil collection, 1,417 tons/hectare on a two-year average, came from the pre-sowing mixture with two foliar fertilizings.
Intervention effect Compared with the control, oil collection from 1 hectare increased by 0.271 tons/hectare or almost 24.0% with the two-foliar-fertilizing variant.
Intervention effect Three foliar top dressings gave lower sunflower oil collection than two top dressings.
Association Oil content in sunflower seeds decreased after the third foliar feeding.
Intervention effect The all-drug pre-sowing mixture gave the highest sunflower seed yield.
Intervention effect The all-drug pre-sowing mixture gave the highest oil content in sunflower seeds.
Intervention effect The all-drug pre-sowing variant increased oil yield from 1 hectare by 16.2% over the control.
Intervention effect The all-drug pre-sowing variant increased sunflower seed yield by 12.7% on average over the years and foliar fertilization.
Association Weather conditions changed sunflower seed yield by a range of 24.0% across the two years.
Association Weather conditions changed oil yield from 1 hectare by 19, 7% across the two years.
Mechanism The smaller weather effect on oil collection is associated with the lower oil content of the seeds in 2023.

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