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“yield decrease”

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plus 1 earlier · 1940s

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Organism: Solanum lycopersicum ✕

Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

Root loss of 50% after 21 weeks did not affect fruit yield, whereas 40% loss within 11 weeks accompanied a 45% yield decrease.

Taxon: tomatoSolanum lycopersicumt0
Outcome: yield decreasee0
Direction: decreasee0
Value: 45%e0
Qualifier: 40% loss within 11 weeks of plantinge0
Comparator: root losse0

Verbatim

t0
“tomato”
✓ located verbatim in the source · title, characters 20–26

e0
“A 50% root loss after 21 weeks did not affect fruit yields whereas a 40% loss within 11 weeks of planting was reflected by a 45% yield decrease”
✓ located verbatim in the source · abstract, characters 2287–2430

Title

The epidemiology of tomato brown root rot

F. T. LAST; MARION H. EBBEN Annals of Applied Biology 1966. doi:10.1111/j.1744-7348.1966.tb06870.x

Other claims from this paper (19)

Observation Three brown root rot symptoms occurred on tomato roots in infested soil without nematodes.
Observation Brown lesions appeared within a week of planting in heavily infested soils.
Observation Corkiness and black dot rarely appeared until the third month after planting.
Observation Black dot incidence sometimes rose sharply toward season end.
Association Observations suggested GSF caused more damage than C. atramentarium.
Association Yield was unrelated to black dot incidence.
Association Yield was inversely proportional to brown lesion occurrence.
Association Yield was inversely proportional to corkiness occurrence.
Association The yield relation with brown lesions was significant within eight weeks of planting.
Observation Early brown lesions mostly yielded GSF cultures, whereas later lesions more often yielded C. atramentarium.
Intervention effect Most GSF cultures produced 10 mm brown lesions on tomato seedling roots within two weeks.
Intervention effect C. atramentarium inoculation produced small pink lesions.
Intervention effect Pyrenochaeta inoculation produced no lesions.
Intervention effect GSF caused greater root damage, including root loss, in soil tests.
Association GSF root damage was reflected in decreased aerial growth.
Association GSF root damage was reflected in smaller fruit yields.
Intervention effect C. atramentarium did not affect aerial growth or fruit yield in soil tests.
Intervention effect In the second year, GSF lowered six week picking yield from 1.96 kg in controls to 1.02 kg per plant.
Observation GSF damage shifted with plant age: brown lesions appeared within days, while corkiness appeared after two to three months with stem lesions and yellow leaves.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

An unventilated, unenriched tomato house suffered a 13% yield decrease

Taxon: tomatoesSolanum lycopersicume1
Treatment: unenrichede3
Outcome: yielde3
Direction: decreasee3
Value: 13e3

Not reportedComparator

Verbatim

e1
“The yield of 2 crops of tomatoes ( Lycopersicon esculentum Mill. cv. Tropic) was determined in CO 2 enriched, unventilated and conventionally ventilated greenhouses”
✓ located verbatim in the source · abstract, characters 9–173

e3
“An unventilated, unenriched house suffered a 13% yield decrease”
✓ located verbatim in the source · abstract, characters 749–812

Title

Tomato Yields from CO2-enrichment in Unventilated and Conventionally Ventilated Greenhouses1

B. A. Kimball; S. T. Mitchell Journal of the American Society for Horticultural Science 1979. doi:10.21273/jashs.104.4.515

Other claims from this paper (11)

Intervention effect Unventilated houses enriched with 650 μl CO2/liter had 17% greater tomato yield than the control
Intervention effect Unventilated houses enriched with 1000 μl CO2/liter had 48% greater tomato yield than the control
Observation The ventilated control house yielded 8.58 kg/plant in the first spring crop
Observation The control house yielded 8.48 kg/plant in the second winter crop at standard nutrient level
Observation The control house yielded 9.70 kg/plant in the second winter crop at high nutrient level
Intervention effect Unventilated houses at standard nutrient level yielded 64% more than the control at 1000 μl CO2/liter
Intervention effect Unventilated houses at standard nutrient level yielded 63% more than the control at 1350 μl CO2/liter
Intervention effect Unventilated houses at high nutrient level yielded 35% more than the control at 1000 μl CO2/liter
Intervention effect Unventilated houses at high nutrient level yielded 37% more than the control at 1350 μl CO2/liter
Intervention effect A ventilated house enriched to 1000 μl/liter when cooling was not required yielded 8% more than the control at standard nutrient level
Intervention effect A ventilated house enriched to 1000 μl/liter when cooling was not required yielded 10% more than the control at high nutrient level

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

LaCl3 irrigation exacerbated the low-temperature decrease in tomato physiology and yield.

Taxon: tomatoSolanum lycopersicume1
Treatment: lanthanum chloride(LaCl3)e0
Outcome: Pn,root activity and yielde1
Direction: exacerbated the decreasee0

Not reportedComparator

Verbatim

e0
“Irrigation with ethylene glycol tetraacetic acid(EGTA) or lanthanum chloride(LaCl3) exacerbated the decrease”
✓ located verbatim in the source · abstract, characters 557–665

e1
“decrease of Pn,root activity and yield of tomato under LNT”
✓ located verbatim in the source · abstract, characters 498–556

Title

Effect of calcium on production and accumulation of photosythate in tomato under low night temperature stress

Li TianLai Jiangsu nongye xuebao 2012

Other claims from this paper (5)

Intervention effect Low night temperature inhibited tomato photosynthesis and reduced stomatal conductance, intercellular CO2 concentration, and transpiration rate.
Intervention effect Low night temperature increased tomato stomatal limitation.
Intervention effect Low night temperature decreased tomato yield and quality.
Intervention effect CaCl2 irrigation alleviated the low-temperature decreases in tomato Pn, root activity and yield.
Intervention effect EGTA irrigation exacerbated the low-temperature decrease in tomato physiology and yield.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

EGTA irrigation exacerbated the low-temperature decrease in tomato physiology and yield.

Taxon: tomatoSolanum lycopersicume1
Treatment: ethylene glycol tetraacetic acid(EGTA)e0
Outcome: Pn,root activity and yielde1
Direction: exacerbated the decreasee0

Not reportedComparator

Verbatim

e0
“Irrigation with ethylene glycol tetraacetic acid(EGTA) or lanthanum chloride(LaCl3) exacerbated the decrease”
✓ located verbatim in the source · abstract, characters 557–665

e1
“decrease of Pn,root activity and yield of tomato under LNT”
✓ located verbatim in the source · abstract, characters 498–556

Title

Effect of calcium on production and accumulation of photosythate in tomato under low night temperature stress

Li TianLai Jiangsu nongye xuebao 2012

Other claims from this paper (5)

Intervention effect Low night temperature inhibited tomato photosynthesis and reduced stomatal conductance, intercellular CO2 concentration, and transpiration rate.
Intervention effect Low night temperature increased tomato stomatal limitation.
Intervention effect Low night temperature decreased tomato yield and quality.
Intervention effect CaCl2 irrigation alleviated the low-temperature decreases in tomato Pn, root activity and yield.
Intervention effect LaCl3 irrigation exacerbated the low-temperature decrease in tomato physiology and yield.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Final yield of MDHAR-silenced lines showed a stronger decrease under carbon limitation.

Taxon: cherry tomatoSolanum lycopersicum var. cerasiformet0
Material: MDHAR silenced linese1
Treatment: carbon limitatione1
Outcome: final yielde1
Direction: stronger decreasee1

Not reportedComparator

Verbatim

e1
“final yield of MDHAR silenced lines showed a stronger decrease under carbon limitation”
✓ located verbatim in the source · abstract, characters 965–1051

t0
“cherry tomato”
✓ located verbatim in the source · title, characters 31–44

Title

Reduction of MDHAR activity in cherry tomato suppresses growth and yield and MDHAR activity is correlated with sugar levels under high light

Vincent Truffault; Noé Gest; Cécile Garchery; et al. Plant Cell & Environment 2015. doi:10.1111/pce.12663

Other claims from this paper (9)

Intervention effect Independently of the light regime, early growth of all organs was slower in MDHAR-silenced cherry tomato lines.
Intervention effect MDHAR silencing decreased final fruit yield.
Intervention effect Photosynthesis was altered in MDHAR-modified lines.
Intervention effect Accumulation of hexoses and sucrose was altered in a light-dependent manner in plantlets.
Intervention effect Sucrose accumulation was repressed in young fruits of MDHAR-silenced lines.
Intervention effect The phenotype of MDHAR-silenced lines was partially restored by reducing fruit load.
Association MDHAR activity is correlated with sugar levels under high light in cherry tomato.
Mechanism Ascorbate and MDHA appear to be involved in control of growth and sugar metabolism in cherry tomato.
Recommendation The associated enzymes could be potential targets for yield improvement.

Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

The yield reduction was associated with an approximately 25% decrease in individual fresh fruit weight.

Taxon: TomatoesSolanum lycopersicumt0
Outcome: individual fresh fruit weighte0
Direction: decreasee0
Value: approximately 25%e0

Verbatim

t0
“Tomatoes”
✓ located verbatim in the source · title, characters 86–94

e0
“This yield reduction was not caused by the fruit number, but by an approximately 25% decrease in individual fresh fruit weight.”
✓ located verbatim in the source · abstract, characters 789–916

Title

The Effect of Electrical Conductivity on Fruit Growth Pattern in Hydroponically Grown Tomatoes

Takafumi Watabe; Yuka Nakano; Dong-Hyuk Ahn Crops 2022. doi:10.3390/crops2030023

Other claims from this paper (8)

Intervention effect Increasing EC decreased tomato fruit yield by approximately 20% in both cultivars.
Intervention effect Increasing EC raised tomato fruit dry matter content by 0.5–1% in both cultivars.
Observation Fruit number did not account for the tomato yield reduction.
Intervention effect High EC decreased the decay rate of fruit dry matter content in the Japanese cultivar.
Observation Under low EC, the fruit water weight change rate increased around 585 °C-days after anthesis.
Observation Under low EC, the fruit dry weight change rate increased around 480 °C-days after anthesis.
Intervention effect High EC changed fruit water increase rates, with opposite shifts in the two cultivars.
Intervention effect EC treatment did not affect fruit dry weight increase.

Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

Treatment with 150 mM NaCl led to a significant decrease in tomato yield.

Taxon: tomatoSolanum lycopersicumt0
Treatment: 150Mm NaCle0
Outcome: yielde0
Direction: decreasee0
Comparator: controle0

Verbatim

t0
“tomato”
✓ located verbatim in the source · title, characters 128–134

e0
“plants treated with 150Mm NaCl also produced much smaller fruits than control leading to significant decrease in yield”
✓ located verbatim in the source · abstract, characters 1041–1159

Title

Salt stress induces SFT expression to promote early flowering and inhibits floral organ development by disturbing cell cycle in tomato

Fengze Sun; Yahui Wang; Genzhong Liu; et al. Vegetable Research 2024. doi:10.48130/vegres-0024-0017

Other claims from this paper (9)

Intervention effect Salt stress significantly reduced tomato plant biomass compared with the control.
Intervention effect Tomato plants treated with 50-150 mM NaCl showed an early flowering phenotype relative to the control.
Intervention effect Tomato plants treated with 50-150 mM NaCl produced smaller flowers relative to the control.
Intervention effect The SFT gene was upregulated under salt stress in tomato, as shown by RT-qPCR.
Intervention effect Salt treatment decreased tomato seedling biomass, particularly in the floral organ.
Intervention effect Tomato plants treated with 150 mM NaCl produced much smaller fruits than the control.
Intervention effect Nuclear DNA ploidy analysis showed significant impacts of salt stress on intranuclear replication in tomato sepals and petals.
Mechanism The authors indicate that salt stress disrupts the cell cycle in floral organs, primarily by influencing transcription of CycA2;1 and CycB1;2.
Mechanism The authors conclude that salt stress promotes early flowering in tomato by inducing SFT expression.

Mechanismauthor interpretationoriginal resultnegativemeasured

Claim · model-written summary

The reduction in tomato fruit yield was attributed to a decrease in fruit weight.

Taxon: tomatoSolanum lycopersicumt0
Outcome: fruit yielde2
Qualifier: a decrease in fruit weighte2

Verbatim

t0
“single-truss tomato grown in hydroponics”
✓ located verbatim in the source · title, characters 67–107

e2
“The reduction in fruit yield was due to a decrease in fruit weight but not in fruit number”
✓ located verbatim in the source · abstract, characters 476–566

Title

Effects of salinity at two ripening stages on the fruit quality of single-truss tomato grown in hydroponics

Y. Sakamoto; S. Watanabe; T. Nakashima; et al. The Journal of Horticultural Science and Biotechnology 1999. doi:10.1080/14620316.1999.11511174

Other claims from this paper (10)

Intervention effect Salinity at the immature green stage improved tomato fruit quality more than salinity at the decolouring stage.
Intervention effect Salinity at the immature green stage decreased tomato fruit yield more than salinity at the decolouring stage.
Observation Fruit number of tomato was not reduced by salinity.
Intervention effect Salinity increased the concentrations of soluble solids, citrate and ascorbic acid in tomato fruit.
Intervention effect Salinity increased the K concentration in tomato fruit.
Intervention effect Salinity increased chlorophyll a and chlorophyll b concentrations in tomato fruit.
Intervention effect Salinity increased lycopene and carotene concentrations in tomato fruit.
Intervention effect Salinity decreased or did not affect the absolute amount of these constituents per tomato fruit.
Mechanism Authors suggest that the salinity-induced improvement in tomato fruit quality is caused by reduced water import into the fruit.
Intervention effect Salinity applied at the earlier development stage was significantly more effective for tomato.

Mechanismauthor interpretationoriginal resultnegativemeasured

Claim · model-written summary

The fall in tomato yield was due in part to a decrease in fruit size.

Taxon: tomatoSolanum lycopersicume0
Material: Solairo and Esperoe0
Outcome: fall in yielde7
Qualifier: a decrease in fruit sizee7

Verbatim

e0
“two standard round fruited cultivars of tomato (Lycopersicon esculentumMill) Solairo and Espero, grown in rockwool”
✓ located verbatim in the source · abstract, characters 191–305

e7
“The fall in yield was due, in part, to a decrease in fruit size”
✓ located verbatim in the source · abstract, characters 1332–1395

Title

The effect of split-root salinity stress on tomato leaf expansion, fruit yield and quality

B. J. Mulholland; M. Fussell; R. N. Edmondson; et al. The Journal of Horticultural Science and Biotechnology 2002. doi:10.1080/14620316.2002.11511531

Other claims from this paper (8)

Intervention effect The split-root high EC treatment increased the concentrations of sugar, acid and total soluble solids in tomato fruit.
Intervention effect The split-root high EC treatment reduced the incidence of visual fruit defects such as uneven ripening and gold-spot.
Intervention effect The split-root high EC treatment reduced tomato leaf area.
Association Reduced tomato leaf area under split-root high EC corresponded with low leaf K concentration.
Intervention effect Doubling the rooting volume with the split-root method had no detectable effect on tomato leaf expansion, yield or fruit quality.
Intervention effect The high EC split-root treatment had little impact on tomato yield for the first ten weeks.
Intervention effect The high EC split-root treatment reduced weekly tomato yield thereafter, by about 9 and 13% in Solairo and Espero.
Observation Water uptake by tomato was reduced under split-root salinity.

Associationobservedoriginal resultnegativesimulated

Claim · model-written summary

In numerical simulations, an increase in the number of vectors around the field is associated with a decrease in tomato yield.

Taxon: tomatoSolanum lycopersicume1
Treatment: an increase in the number of vectors around the fielde1
Outcome: tomato yielde1
Direction: decreasee1

Verbatim

e1
“the outcomes indicate an increase in the number of vectors around the field with a decrease in tomato yield”
✓ located verbatim in the source · abstract, characters 1530–1637

Title

SVFRH: A Growth Stage-Based Compartmental Model for Predicting the Disease Incident in Tomato (Solanum lycopersicum)

Athira P. Shaji; S. Hemalatha IEEE Access 2025. doi:10.1109/access.2025.3537953

Other claims from this paper (1)

Observation The stage-based model is reported to predict tomato disease incidence accurately at each growth stage.

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“yield decrease”

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