Search claims · PlantClaims

Observationobservedoriginal resultprojected

Claim · model-written summary

Western European olive yield is projected to decline by up to 45%.

Taxon: oliveOlea europaeae0 t0
Outcome: yielde0 t0
Direction: decreasee0 t0
Value: −45%e0 t0

Verbatim

e0
“a yield decrease (down to −45%)”
✓ located verbatim in the source · abstract, characters 1469–1500

t0
“Climate change projections for olive yields in the Mediterranean Basin”
✓ located verbatim in the source · title, characters 0–70

Title

Climate change projections for olive yields in the Mediterranean Basin

Helder Fraga; Joaquim G. Pinto; Francesco Viola; et al. International Journal of Climatology 2019. doi:10.1002/joc.6237

Other claims from this paper (17)

Observation Past olive growing season length was higher at lower latitudes.
Observation Past olive yields were lower in inner south Iberia and higher in Italy and Greece.
Observation Southern Iberia had higher growing season temperature and lower precipitation.
Observation Southern Iberia had higher potential evapotranspiration.
Observation Southern Iberia had lower actual evapotranspiration.
Observation Southern Iberia had stronger water demand.
Observation Past water productivity had similar ranges across Europe.
Observation Future olive growing season length is projected to increase.
Observation Future growing season temperature is projected to increase up to 3°C.
Observation Western European growing season precipitation is projected to decrease.
Observation Western European water demand is projected to rise.
Observation Eastern European precipitation is projected to rise slightly.
Observation Eastern European water demand is projected to decline.
Observation Eastern European olive yield is projected to increase by up to 15%.
Observation Olive water productivity is projected to remain mostly unchanged.
Observation Climate change may threaten olive orchard viability in southern Iberia and parts of Italy.
Recommendation The authors call for timely adaptation planning for the olive sector.

Mechanismauthor interpretationreview summarynegativebasis n/a

Claim · model-written summary

Leaf rust defoliation can decrease photosynthesis.

Taxon: southern highbush blueberriese1
Outcome: photosynthesise0
Direction: decreasee0
Qualifier: defoliatione0

Verbatim

e0
“Severe leaf rust causes defoliation in the fall or early winter, which can decrease floral bud differentiation, photosynthesis, and the next season’s fruit yield”
✓ located verbatim in the source · abstract, characters 151–312

e1
“southern highbush blueberries”
✓ located verbatim in the source · abstract, characters 37–66

Title

Leaf Rust Disease of Southern Highbush Blueberry in Florida

Philip F. Harmon; Christ Mane Belizaire; Douglas A. Phillips EDIS 2025. doi:10.32473/edis-pp385-2025

Other claims from this paper (4)

Mechanismhypothesisoriginal resultnegativebasis n/a

Claim · model-written summary

The quantum yield decrease may partly reflect lower light capture efficiency due to lower chlorophyll content.

Taxon: Norway sprucePicea abiest0
Outcome: apparent quantum yielde1
Direction: decreasede1
Qualifier: a lower efficiency of light capture due to a lower content of chlorophylle0

Verbatim

e0
“The decrease could probably partly be attributed to a lower efficiency of light capture due to a lower content of chlorophyll.”
✓ located verbatim in the source · abstract, characters 629–755

t0
“Norway spruce”
✓ located verbatim in the source · title, characters 22–35

e1
“the apparent quantum yield decreased with increasing shoot age and ozone concentration”
✓ located verbatim in the source · abstract, characters 487–573

Title

Long‐term exposure of Norway spruce,Picea abies(L.) Karst., to ozone in opentop chambers

G. WALLIN; L. SKÄRBY; G. SELLDÉN New Phytologist 1992. doi:10.1111/j.1469-8137.1992.tb02938.x

Other claims from this paper (8)

Association Apparent quantum yield decreased with shoot age in 1- and 2-year-old shoots.
Intervention effect Apparent quantum yield decreased with increasing ozone concentration in 1- and 2-year-old shoots.
Intervention effect No effect on apparent quantum yield was found in current-year shoots.
Intervention effect No effect was observed on the Kok-effect or light response curve convexity across treatments or age classes.
Intervention effect Current-year NF+ shoots had a significantly higher light compensation point than CF and NF shoots.
Mechanism The higher light compensation point was suggested to reflect increased dark respiration.
Intervention effect Ozone had a larger effect on light-saturated photosynthesis than on apparent quantum yield.
Intervention effect Ozone was suggested to influence photosynthetic efficiency more at high than at low light.

Observationobservedoriginal resultmeasured

Claim · model-written summary

Rosmarinus officinalis showed the same increase then decrease pattern in metabolites and essential oil yield.

Taxon: Rosmarinus officinalisSalvia rosmarinuse0
Outcome: same patterne0

Verbatim

e0
“The same pattern was observed for Mentha pulégium and Rosmarinus officinalis.”
✓ located verbatim in the source · abstract, characters 1164–1241

Title

The Impact of Environmental Stress on the Secondary Metabolites and the Chemical Compositions of the Essential Oils from Some Medicinal Plants Used as Food Supplements

Abdelouahid Laftouhi; Noureddine Eloutassi; Elhachmia Ech-Chihbi; et al. Sustainability 2023. doi:10.3390/su15107842

Other claims from this paper (19)

Recommendationauthor interpretationoriginal resultbasis n/a

Claim · model-written summary

The authors conclude that the vegetative-productive balance matters, especially in esca-infected vineyards, to limit symptom expression and yield decrease.

Taxon: GrapevineVitist0
Outcome: vegetative-productive balancee0
Setting: Esca infected vineyardse0

Verbatim

e0
“underlined the importance of the vegetative-productive balance, in Esca infected vineyards especially, in order to limit the symptoms’ expression and the decrease in yield”
✓ located verbatim in the source · abstract, characters 1541–1712

t0
“Esca Disease of Grapevine”
✓ located verbatim in the source · title, characters 54–79

Title

Effect of Different Foliar Fertilizer Applications on Esca Disease of Grapevine: Symptom Expression and Nutrient Content in the Leaf and Composition of the Berry

Francesco Calzarano; Carmine Amalfitano; Leonardo Seghetti; et al. Agronomy 2023. doi:10.3390/agronomy13051355

Other claims from this paper (7)

Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Vines receiving 80% of crop water requirement had a 3.70% yield decrease relative to full irrigation, without a significant overall impact.

Taxon: Vitis viniferaVitis viniferat0
Material: Flame seedlesse0
Treatment: 80% CWRe1
Outcome: yielde1
Direction: decreasee1
Value: 3.70%e1
Qualifier: it did not have a significant overall impacte2
Comparator: full irrigatione1
Setting: Luxor Governorate, Egypte0

Verbatim

t0
“grape production (Vitis vinifera L.)”
✓ located verbatim in the source · title, characters 46–82

e0
“the Flame seedless grapevines during two successive seasons (2024 and 2025) at a private orchard in the Luxor Governorate, Egypt”
✓ located verbatim in the source · abstract, characters 396–524

e1
“vines receiving 80% CWR had a yield decrease of 3.70% compared to full irrigation”
✓ located verbatim in the source · abstract, characters 797–878

e2
“it did not have a significant overall impact”
✓ located verbatim in the source · abstract, characters 977–1021

Title

Deficit-irrigation management for sustainable grape production (Vitis vinifera L.): different regimes to assess yield and berry quality under arid conditions

Abdel-Fattah M. El-Salhy; El-Nouby H. Salem; Moustafa M. A. Mohamed; et al. Scientific Reports 2026. doi:10.1038/s41598-026-47407-8

Other claims from this paper (2)

Observationobservedoriginal resultmeasured

Claim · model-written summary

After low winter rainfall, pine quantum yield of photosynthesis showed larg decrease.

Taxon: pine treesPinuse1
Outcome: quantum yield of photosynthesise0
Direction: larg decreasee0
Qualifier: following a low rainfall seasone0

Verbatim

e0
“The results showed that following a low rainfall season, soil moisture contes (SWC) reaches the 16% threshold of no traspirable water in spring, followed by larg decrease in carbon uptake and quantum yield of photosynthesis and the activation of protection mechanisms, such as decrease in chlorophyll content, large NPQ, and drop in the chlorophyll to cartenoid ratio (CCI index, obtained from canopy reflectance).”
✓ located verbatim in the source · abstract, characters 757–1171

e1
“pine trees in this region”
✓ located verbatim in the source · abstract, characters 321–346

Title

Combining SIF, reflectance, and leaf scale measuremnts to assess the effcets of interannual changes in winter rainfall on tree physiology during the following summer drought period in a dry Mediterranean pine forest

Amnon Cochavi; Eyal Rotenberg; Fyodor Tatarinov; et al. 2021. doi:10.5194/egusphere-egu21-15086

Other claims from this paper (12)

Observation After low winter rainfall, pine carbon uptake showed larg decrease.
Observation After low winter rainfall, pine chlorophyll content showed decrease.
Observation After low winter rainfall, pine NPQ showed large.
Observation After low winter rainfall, pine chlorophyll to cartenoid ratio showed drop.
Observation Following high rainfall, pine active season was extended.
Observation Following high rainfall, pine carbon uptake was continues.
Observation Following high rainfall, pine amount of energy allocated to photochemistry was high.
Observation Following high rainfall, pine leaf chlorophyll was No decrease.
Observation Following high rainfall, pine NPQ was No decrease.
Observation Following high rainfall, pine CCI was decrease.
Mechanism The authors hypothesize that unidentified water storage outside the root zone supports the pine response.
Observation Pine activity shifted to early morning hours.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Shoot thinning decreased yield two-fold.

Taxon: grapevineVitist0
Treatment: STt1
Outcome: yielde0
Direction: decreasee0
Value: two-folde0

Not reportedComparator

Verbatim

e0
“two-fold decrease in yield”
✓ located verbatim in the source · abstract, characters 2217–2243

t0
“grapevine (Vitis vinifera L. cv. Cabernet Sauvignon)”
✓ located verbatim in the source · abstract, characters 480–532

t1
“canopy management practices (ST)”
✓ located verbatim in the source · abstract, characters 2119–2151

Title

Optimal Ranges and Thresholds of Grape Berry Solar Radiation for Flavonoid Biosynthesis in Warm Climates

Nazareth Torres; Johann Martínez-Lüscher; Etienne Porte; et al. Frontiers in Plant Science 2020. doi:10.3389/fpls.2020.00931

Other claims from this paper (10)

Association Flavonols were the only monitored flavonoid group upregulated by solar radiation.
Observation Flavonoid groups showed different sensitivity to degradation.
Observation Shoot thinning accounted for the main effects among canopy practices.
Intervention effect Shoot thinning hastened fruit maturity under the trial conditions.
Intervention effect Combined leaf removal and shoot thinning hastened fruit maturity under the trial conditions.
Intervention effect Canopy practices did not clearly improve flavonoid compounds at harvest.
Intervention effect Canopy management decreased berry methoxypyrazine content.
Intervention effect Shoot thinning raised berry total soluble solids by 2.5o Brix.
Intervention effect Shoot thinning increased labor operations cost four-fold.
Intervention effect Shoot thinning increased anthocyanin production cost per hectare ten-fold.

Associationobservedoriginal resultnegativesignificant (as stated)projected

Claim · model-written summary

Decreased rainfall would significantly reduce cocoa bean yield.

Taxon: CocoaTheobroma cacaot0
Treatment: decrease in rainfalle0
Outcome: cocoa bean yielde0
Direction: reducee0

Verbatim

e0
“decrease in rainfall, increase in temperature and increase in PET, would significantly reduce the cocoa bean yield”
✓ located verbatim in the source · abstract, characters 927–1041

t0
“Cocoa”
✓ located verbatim in the source · title, characters 28–33

Title

Climate Driven Responses in Cocoa for Tamil Nadu, India

M. Selva Kumar; V. Geethalakshmi; P. Irene Vethamoni; et al. International Journal of Environment and Climate Change 2022. doi:10.9734/ijecc/2022/v12i1131049

Other claims from this paper (7)

Association Cocoa had a positive correlation with rainfall.
Association Cocoa had a positive correlation with actual evapotranspiration.
Association Maximum temperature had a significantly negative effect on cocoa productivity.
Association Minimum temperature had a significantly negative effect on cocoa productivity.
Association Increased temperature would significantly reduce cocoa bean yield.
Association Increased PET would significantly reduce cocoa bean yield.
Recommendation The authors call for management measures to sustain cocoa productivity under warming and erratic rainfall.

Observationobservedoriginal resultmeasured

Claim · model-written summary

Chlorotic kiwifruit plantlets had decreased PSII maximum quantum yield.

Outcome: maximum quantum yield of PSII photochemistry Fv/Fme0
Direction: decreasee0

Not reportedTaxon

Verbatim

e0
“a decrease in the maximum quantum yield of PSII photochemistry Fv/Fm”
✓ located verbatim in the source · abstract, characters 523–591

Title

A seedling-lethal mutation affects chloroplast biogenesis and photosynthetic gene expression in kiwifruit

Mary-Rus Martínez-Cuenca; Luis Andrés Ramón-Núñez; Concepción Gómez-Mena; et al. Scientia Horticulturae 2026. doi:10.1016/j.scienta.2025.114582

Other claims from this paper (7)

“yield decrease”

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