Search claims · PlantClaims

Observationobservedoriginal resultno effectmeasured

Claim · model-written summary

Below CO2 uptake saturation, instantaneous fluorescence yield did not decrease during nonphotochemical quenching.

Taxon: Hedera helixHedera helixe1
Outcome: yield of instantaneous fluorescencee0
Direction: not accompanied by a decreasee0

Verbatim

e0
“below light-saturation of CO(2) uptake nonphotochemical quenching occurred in the absence of zeaxanthin and was not accompanied by a decrease in the yield of instantaneous fluorescence.”
✓ located verbatim in the source · abstract, characters 792–977

e1
“Intact attached sun leaves of Helianthus annuus and shade leaves of Monstera deliciosa and Hedera helix were used to obtain light response curves”
✓ located verbatim in the source · abstract, characters 0–145

Title

Light Response of CO₂ Assimilation, Dissipation of Excess Excitation Energy, and Zeaxanthin Content of Sun and Shade Leaves

Barbara Demmig-Adams; Klaus Winter; Almuth Krüger; et al. PLANT PHYSIOLOGY 1989. doi:10.1104/pp.90.3.881

Other claims from this paper (9)

Observation The three species differed widely in light-saturated CO2 uptake capacity.
Observation The species reached CO2 uptake light saturation at different photon flux densities.
Observation Nonphotochemical quenching occurred below CO2 uptake saturation without zeaxanthin.
Observation Nonphotochemical quenching increased to 0.35–0.5.
Observation Nonphotochemical quenching increased again near CO2 uptake saturation.
Observation Leaf zeaxanthin content rose near CO2 uptake saturation.
Observation Instantaneous fluorescence yield began decreasing near CO2 uptake saturation.
Association Increasing zeaxanthin paralleled increasing radiationless energy dissipation.
Association The authors suggest zeaxanthin may relate to high-energy-state quenching.

Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

Highest drought reduced seed yield 71.40%.

Taxon: safflowerCarthamus tinctoriuse1
Treatment: droughte0
Outcome: seed yielde2
Direction: decreasee0
Value: 71.40%e0
Comparator: control treatment (without drought and salinity stress)e0

Verbatim

e0
“highest level of each of drought (71.40% decrease) and salinity (55.56% decrease) stresses as compared to control treatment (without drought and salinity stress)”
✓ located verbatim in the source · abstract, characters 1185–1346

e1
“response of safflower (Carthamus tinctorius L.) to salinity, drought and combined salinity- drought stresses”
✓ located verbatim in the source · abstract, characters 45–153

e2
“The highest level of combined salinity-drought stress decreased seed yield (87.13% decrease) more than the highest level of each of drought (71.40% decrease) and salinity (55.56% decrease) stresses as compared to control treatment (without drought and salinity stress)”
✓ located verbatim in the source · abstract, characters 1078–1346

Title

Evaluation of Yield, Yield Components and Photosynthesis of Safflower (Carthamus tinctorius L.) in Response to Combined Salinity and Drought Stresses at Vegetative Growth Stage

Marziyeh Esmaeilzadeh; Hosein Babazadeh; Hormozd Naghavi; et al. DOAJ (DOAJ: Directory of Open Access Journals) 2021. doi:10.30495/jcep.2021.681008

Other claims from this paper (7)

Observation Most safflower traits declined significantly as salinity and drought increased.
Observation Severe drought and salinity gave the lowest trait values.
Observation Seed oil content fell 7.4% at highest salinity, significantly.
Observation Combined highest salinity and drought reduced seed yield 87.13%.
Observation Highest salinity reduced seed yield 55.56%.
Observation Drought contributed more than salinity to seed yield reduction.
Recommendation Authors recommend 80% field capacity irrigation and 5 dS/m water salinity to limit seed yield loss.

Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

Highest salinity reduced seed yield 55.56%.

Taxon: safflowerCarthamus tinctoriuse1
Treatment: salinitye0
Outcome: seed yielde2
Direction: decreasee0
Value: 55.56%e0
Comparator: control treatment (without drought and salinity stress)e0

Verbatim

e0
“highest level of each of drought (71.40% decrease) and salinity (55.56% decrease) stresses as compared to control treatment (without drought and salinity stress)”
✓ located verbatim in the source · abstract, characters 1185–1346

e1
“response of safflower (Carthamus tinctorius L.) to salinity, drought and combined salinity- drought stresses”
✓ located verbatim in the source · abstract, characters 45–153

e2
“The highest level of combined salinity-drought stress decreased seed yield (87.13% decrease) more than the highest level of each of drought (71.40% decrease) and salinity (55.56% decrease) stresses as compared to control treatment (without drought and salinity stress)”
✓ located verbatim in the source · abstract, characters 1078–1346

Title

Evaluation of Yield, Yield Components and Photosynthesis of Safflower (Carthamus tinctorius L.) in Response to Combined Salinity and Drought Stresses at Vegetative Growth Stage

Marziyeh Esmaeilzadeh; Hosein Babazadeh; Hormozd Naghavi; et al. DOAJ (DOAJ: Directory of Open Access Journals) 2021. doi:10.30495/jcep.2021.681008

Other claims from this paper (7)

Observation Most safflower traits declined significantly as salinity and drought increased.
Observation Severe drought and salinity gave the lowest trait values.
Observation Seed oil content fell 7.4% at highest salinity, significantly.
Observation Combined highest salinity and drought reduced seed yield 87.13%.
Observation Highest drought reduced seed yield 71.40%.
Observation Drought contributed more than salinity to seed yield reduction.
Recommendation Authors recommend 80% field capacity irrigation and 5 dS/m water salinity to limit seed yield loss.

Observationauthor interpretationoriginal resultprojected

Claim · model-written summary

Optimal fertilizer rate was inferred to decrease in future climates.

Taxon: maizeZea mayst0
Outcome: optimal fertilizer ratee0
Direction: decreasee0
Qualifier: in the futuree0

Verbatim

e0
“implying a decrease in the optimal fertilizer rate in the future”
✓ located verbatim in the source · abstract, characters 1433–1497

t0
“maize”
✓ located verbatim in the source · title, characters 19–24

Title

Climate change and maize yield in southern Africa: what can farm management do?

Jairos Rurinda; Mark T. van Wijk; Paul Mapfumo; et al. Global Change Biology 2015. doi:10.1111/gcb.13061

Other claims from this paper (11)

Intervention effect Under low forcing, simulated maize yield declined 13% in 2010–2039 relative to the baseline.
Intervention effect Under low forcing, simulated maize yield declined 13% in 2040–2069 relative to the baseline.
Intervention effect Under low forcing, simulated maize yield declined 20% in 2070–2099 relative to the baseline.
Observation Under high forcing, maize yield losses in 2070–2099 were predicted to reach 32%.
Observation Yield-change trends were similar at Hwedza and Makoni despite rainfall differences.
Association Maize yield responded nonlinearly to delayed planting.
Intervention effect Fertilizer significantly increased maize yield under baseline and future climates.
Association Maize response to mineral nitrogen decreased as climate change progressed.
Observation None of the tested management options avoided large yield losses toward the end of the 21st century.
Recommendation Improved crop and soil fertility management was recommended for near-future maize yield.
Recommendation The authors recommend transforming southern African cropping systems to offset climate impacts.

Observationobservedoriginal resultnegativeprojected

Claim · model-written summary

Future rice yields decrease without carbon dioxide fertilization.

Taxon: riceOryza sativae0
Outcome: yieldse0
Direction: decreasee0
Qualifier: without the CO 2 fertilization effecte0

Verbatim

e0
“simulated future rice yields decrease without the CO 2 fertilization effect”
✓ located verbatim in the source · abstract, characters 569–644

Title

Potential impacts of climate change and climate variability on China’s rice yield and production

W Xiong; D Conway; E Lin; et al. Climate Research 2009. doi:10.3354/cr00802

Other claims from this paper (7)

Observation With carbon dioxide fertilization, future rice yields increase in some areas and periods.
Observation Rice yield variability increases in both climate scenarios.
Observation The largest rice yield variability increase is under A2.
Observation Single rice cropping may expand northward in China.
Observation Double rice cropping may move to the northern Yangtze River basin.
Observation Potential Chinese rice production is projected to increase.
Observation The Sichuan basin, Yangtze River basin and Huang-huaihai plain are highly sensitive to future climate change without adaptation.

Observationobservedoriginal resultmeasured

Claim · model-written summary

Number of grains panicle-1 and rice yield increased with delay in sowing time up to 30th December, whereas there was a decrease in duration and tillers m-2

Taxon: riceOryza sativat0
Outcome: rice yielde0
Direction: increasede0

Verbatim

t0
“rice (Oryza sativa L.)”
✓ located verbatim in the source · title, characters 48–70

e0
“Number of grains panicle-1 and rice yield increased with delay in sowing time up to 30th December, whereas there was a decrease in duration and tillers m-2”
✓ located verbatim in the source · abstract, characters 948–1103

Title

Effect of heat stress on yield and economics of rice (Oryza sativa L.) cultivars under different sowing dates

S.MOHAPATRA; S.K.TRIPATHY; A.K.MOHANTY; et al. Journal of Agrometeorology 2021. doi:10.54386/jam.v23i1.86

Other claims from this paper (16)

Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

Winter wheat yield was 39.4% lower in 2019 than 2017.

Taxon: winter bread wheatTriticum aestivumt0
Outcome: yielde0
Direction: decreasee0
Value: 39.4%e0
Setting: 2019e1

Verbatim

t0
“winter bread wheat”
✓ located verbatim in the source · title, characters 47–65

e0
“The yield decrease amounted to 39.4% in 2019 vs. 2017”
✓ located verbatim in the source · abstract, characters 1025–1078

e1
“The yield decrease amounted to 39.4% in 2019 vs. 2017”
✓ located verbatim in the source · abstract, characters 1025–1078

Title

Changes in yield and its structure elements of winter bread wheat depending on the conditions of a moisture supply and a genotype

A. P. Samofalov; S. V. Podgorny; O. V. Skripka; et al. Agrarian science 2023. doi:10.32634/0869-8155-2023-372-7-85-91

Other claims from this paper (15)

Observation Sprouted plant number was 50.5% lower in 2019 than 2017.
Observation Productive head number was 37.2% lower in 2019 than 2017.
Observation Productivity was 10.7% lower in 2020.
Observation Head productivity was 31.8% lower in 2020.
Observation Plant productivity was 12.1% lower in 2020.
Observation Grain size was 21.0% lower in 2020.
Observation Yield decreased 18.6% in 2021.
Observation Plant density decreased 41.7% in 2021.
Observation Productive head stand decreased 18.6% in 2021.
Observation Thousand-grain weight decreased 15.0% in 2021.
Association Yield correlated with plant density (r = 0.78).
Association Yield correlated with productive head (r = 0.70).
Association Yield correlated with grain size of a head (r = 0.60).
Association Yield correlated with a plant (r = 0.79).
Association Yield correlated with plant height (r = 0.70).

Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

Recurrent selection predicted a decrease in cured leaf yield of tobacco in each cycle

Taxon: Nicotiana tabacumNicotiana tabacume0
Outcome: yield of cured leafe2
Direction: decreasee2
Qualifier: predictede2

Verbatim

e0
“Recurrent selection for increased alkaloids from a cross of two low alkaloid tobacco ( Nicotiana tabacum L.) lines raised the population mean from the average of the two parents in the unselected population, to the high parent in one cycle of selection”
✓ located verbatim in the source · abstract, characters 0–252

e2
“A predicted decrease in yield of cured leaf in each cycle was obtained”
✓ located verbatim in the source · abstract, characters 330–400

Title

Recurrent Family Selection and Correlated Response in Nicotina tabacum L. I. ‘Dixie Bright 244’ ✕ ‘Coker 139’¹

D. F. Matzinger; E. A. Wernsman; C. Clark Cockerham Crop Science 1972. doi:10.2135/cropsci1972.0011183x001200010014x

Other claims from this paper (5)

Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

The spring yield decrease was largely offset by increases in the next three growth periods.

Taxon: grasslandt0
Outcome: herbage yielde0
Direction: increasese0
Qualifier: next three growth periodse0

Verbatim

e0
“these decreases were largely compensated for (herbage yield) or more than compensated for (N uptake) by increases in the next three growth periods”
✓ located verbatim in the source · abstract, characters 911–1057

t0
“grassland”
✓ located verbatim in the source · title, characters 27–36

Title

Sward lifting in compacted grassland: effects on soil structure, grass rooting and productivity

H.C. De Boer; J.G.C. Deru; N. Van Eekeren Soil and Tillage Research 2018. doi:10.1016/j.still.2018.07.013

Other claims from this paper (17)

Intervention effect Sward lifting improved grass rooting for at least 10–12 months.
Intervention effect Sward lifting improved soil structure for at least 10–12 months.
Intervention effect Sward lifting did not produce a consistent or lasting increase in herbage yield or nitrogen uptake.
Intervention effect Spring loosening decreased herbage yield by 27% in the next growth period.
Intervention effect Spring loosening decreased nitrogen uptake by 16% in the next growth period.
Observation The spring nitrogen uptake decrease was more than offset by increases in the next three growth periods.
Intervention effect Nitrogen uptake rose by 13 kg N ha−1 in the first growing season after loosening.
Intervention effect Nitrogen uptake fell by 14 kg N ha−1 in the second season after loosening.
Intervention effect Autumn loosening increased herbage yield by 8% in the first growth period after winter.
Intervention effect Autumn loosening increased nitrogen uptake by 15% in the first growth period after winter.
Intervention effect The autumn loosening benefit in yield and nitrogen uptake did not persist into the next four growth periods.
Intervention effect Cumulative yield tended to be 4% higher with autumn loosening.
Recommendation The authors recommend autumn rather than spring soil loosening.
Mechanism Temporary increased soil nitrogen mineralization explained the initial positive loosening effects on herbage yield and nitrogen uptake.
Mechanism Mechanical damage to sward and roots explained the initial negative loosening effects.
Intervention effect Complementary overseeding did not extend the duration of soil loosening effects.
Mechanism Existing sward root growth was judged sufficient to stabilize the loosening effects.

Observationobservedoriginal resultmeasured

Claim · model-written summary

Active P slightly decreased at 41–60 cm.

Outcome: decreasee0
Direction: decreasee0

Not reportedTaxon

Verbatim

e0
“slighty decrease in 41～60 cm soil layer”
✓ located verbatim in the source · abstract, characters 863–902

Title

Effects of Sulfur Application in High Yield Summer Maize

Cun Liu Maize Sciences 2002

Other claims from this paper (13)

Observation The control yielded 9 784.5 kg per hectare.
Observation The S1 treatment yielded 10 639.5 kg per hectare.
Observation The S2 treatment yielded 11 322 kg per hectare.
Intervention effect S1 grain yield was 1.087 3 times that of CK.
Intervention effect S2 grain yield was 1.157 1 times that of CK.
Intervention effect Sulfur application increased ear length and three grain number measures.
Intervention effect Sulfur produced little increase in grain weight.
Association Plant uptake of N, P, K, Mn, Zn and Mg increased with sulfur amount.
Association Leaf Fe, Mn and Zn contents increased with sulfur amount.
Intervention effect Ammonium sulfate lowered soil pH across three soil depths.
Intervention effect Sulfur fertilizer increased total N and active K in the 0–60 cm soil layer.
Intervention effect Sulfur slightly increased active P in the 0–20 cm layer.
Observation Active P varied little at 21–40 cm.

“yield decrease”

Claim types

Direction of the findings

Over time

Claim type

Research area

Polarity

Statistics