Search claims · PlantClaims

Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Walnut shell combined with bioplastic or polyethylene mulch did not significantly decrease pepper yield relative to the weed free control.

Taxon: peppere1
Treatment: walnut shelle4
Outcome: yielde4
Direction: no significant decreasee4
Qualifier: when combined with either bioplastic or polyethylene mulche4
Comparator: weed free controle4

Verbatim

e1
“replicated four times in an organic pepper cropping system near Urbana, IL in 2015 and 2016”
✓ located verbatim in the source · abstract, characters 800–891

e4
“There was no significant decrease in yield compared to the weed free control for turkey litter or walnut shell treatments when combined with either bioplastic or polyethylene mulch or for soybean meal + polyethylene plots”
✓ located verbatim in the source · abstract, characters 1472–1693

Title

Abrasive grit application for integrated weed and nitrogen management in organic vegetable cropping systems

Emily Elizabeth Braun IDEALS (University of Illinois Urbana-Champaign) 2017

Other claims from this paper (16)

Intervention effectobservedoriginal resultno effectnot significant (as stated)projected

Claim · model-written summary

Keeping available water depletion below 25% produced no significant biomass decrease.

Treatment: maintaining AWC depletion below 25%e0
Outcome: biomasse0
Direction: no significant decreasee0

Not reportedTaxonComparator

Verbatim

e0
“maintaining AWC depletion below 25% resulted in no significant decrease in crop yield and biomass”
✓ located verbatim in the source · abstract, characters 2160–2257

Title

Water Productivity of Irrigated Tomatoes in Eastern Canada Based on AquaCrop Simulations

Naresh Kumar Thangaraju Arumugagounder; Samuel Ihuoma; Chandra A. Madramootoo Journal of the ASABE 2022. doi:10.13031/ja.14792

Other claims from this paper (8)

Method / resource Measured seasonal harvest index improved AquaCrop performance over defaults.
Method / resource Calibration dry-yield RMSE was 0.57 ton ha-1.
Method / resource Calibration biomass RMSE was 0.89 ton ha-1.
Method / resource Verification dry-yield RMSE was 0.28 ton ha-1.
Method / resource Verification biomass RMSE was 0.01 ton ha-1.
Intervention effect Keeping available water depletion below 25% produced no significant crop-yield decrease.
Recommendation The authors recommend maintaining available water depletion below 25% for irrigated tomato production.
Observation Water productivity was highest in fully irrigated fields across soil types.

Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Ungulate foraging did not significantly decrease winter wheat grain yield.

Taxon: winter wheatTriticum aestivume0
Treatment: big game grazinge0
Interactor: ungulatee2herbivore
Outcome: grain yieldse2
Direction: did not significantly decreasee2
Comparator: protectede1
Setting: northern Utahe0

Verbatim

e0
“The effects of big game grazing of winter wheat on grain yield were studied during 12 trials in northern Utah between 1990-92”
✓ located verbatim in the source · abstract, characters 0–125

e1
“plots protected and variously grazed by mule deer (Odocoileus hemionus), pronghorn (Antilocapra americana) and Rocky Mountain elk (Cervus elaphus)”
✓ located verbatim in the source · abstract, characters 199–345

e2
“Results indicated that ungulate foraging in these trials did not significantly decrease grain yields despite high utilization percentages on wheat leaves in fall and early spring”
✓ located verbatim in the source · abstract, characters 652–830

Title

WILD UNGULATE DEPREDATION ON WINTER WHEAT: EFFECTS ON GRAIN YIELD

Dennis D. Austin; Philip J. Urness Lincoln (University of Nebraska) 1995

Other claims from this paper (1)

Observation Winter wheat leaves had high utilization by ungulates in fall and early spring.

Intervention effectobservedoriginal resultnegativenot significant (as stated)measured

Claim · model-written summary

The estimated yield decrease of cotton from ambient ozone in water-stressed plots was 7%, not statistically significant.

Taxon: cottonGossypium hirsutumt0
Treatment: ambient O 3e2
Outcome: yielde2
Direction: decreasee2
Value: 7%e4
Qualifier: WS plote4
Comparator: charcoal‐filtered air plotse3

Verbatim

t0
“Injury and Yield Response of Cotton to Chronic Doses of Ozone and Soil Moisture Deficit”
✓ located verbatim in the source · title, characters 0–87

e2
“ambient O 3 (seasonal 12 h d −1 mean of 0.044 µ L L −1 ) caused a yield decrease of 19% in the WW plots”
✓ located verbatim in the source · abstract, characters 824–927

e3
“compared to the O 3 level in our charcoal‐filtered air plots”
✓ located verbatim in the source · abstract, characters 928–988

e4
“The comparable estimate for data from the WS plot was 7%, but this regression was not statistically significant”
✓ located verbatim in the source · abstract, characters 1035–1146

Title

Injury and Yield Response of Cotton to Chronic Doses of Ozone and Soil Moisture Deficit

Allen S. Heagle; J. E. Miller; W. W. Heck; et al. Journal of Environmental Quality 1988. doi:10.2134/jeq1988.00472425001700040019x

Other claims from this paper (4)

Intervention effect Ozone caused a significant yield loss of cotton in well-watered plots.
Intervention effect Ozone did not cause a significant yield loss of cotton in water-stressed plots.
Intervention effect Ambient ozone caused a 19% yield decrease of cotton in well-watered plots compared with charcoal-filtered air.
Association Soil moisture deficit can decrease the impact of ozone on cotton yield.

Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

In every experiment, nitrogen above 75 kg N/ha did not significantly increase or decrease sugar yield.

Taxon: sugar beetBeta vulgaris subsp. vulgarist0
Treatment: more than 75 kg N/hae0
Outcome: sugar yielde0
Direction: neither increased nor decreasede0

Not reportedComparator

Verbatim

e0
“in every experiment, giving more than 75 kg N/ha neither increased nor decreased the sugar yield significantly”
✓ located verbatim in the source · abstract, characters 819–929

t0
“sugar beet”
✓ located verbatim in the source · title, characters 100–110

Title

The effect of time of sowing and harvesting on growth, yield and nitrogen fertilizer requirement of sugar beet

A. P. Draycott; D. J. Webb; E. M. Wright The Journal of Agricultural Science 1973. doi:10.1017/s0021859600058925

Other claims from this paper (4)

Intervention effect Longer growing periods greatly increased sugar beet sugar yield.
Intervention effect Longer growing periods did not change the fertilizer amount needed for maximum sugar yield.
Intervention effect The highest nitrogen dressing with the longest growing period produced the greatest total plant nitrogen.
Method / resource Plant analyses during the growing season had little predictive value for sugar beet nitrogen requirements.

Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Most V5 damage treatments did not significantly reduce yield.

Taxon: SoybeanGlycine maxt0
Treatment: treatments at V5e0
Outcome: yielde0
Direction: did not significantly decreasee0

Not reportedComparator

Verbatim

t0
“Soybean”
✓ located verbatim in the source · title, characters 85–92

e0
“Most of the treatments at V5 did not significantly decrease yield”
✓ located verbatim in the source · abstract, characters 900–965

Title

Yield Reduction from Defoliation and Plant Cutoff of Determinate and Semideterminate Soybean¹

C. S. Pickle; C. E. Caviness Agronomy Journal 1984. doi:10.2134/agronj1984.00021962007600030026x

Other claims from this paper (9)

Observation Forrest yielded significantly more than R74‐334 in both years.
Intervention effect Three V5 treatments significantly increased yield.
Intervention effect At R3, treatments damaging at least half the plants generally significantly reduced yield.
Intervention effect Cutoff followed by complete defoliation of all plants caused the greatest yield reduction.
Intervention effect That cutoff and defoliation treatment reduced Forrest yield by 51%.
Intervention effect That cutoff and defoliation treatment reduced R74‐334 yield by 44%.
Intervention effect Complete defoliation at R3 reduced both genotypes’ yield by 33%.
Association No first order genotype interactions were significant, indicating similar damage responses.
Recommendation Authors recommend using determinate soybean loss values for semideterminate types.

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)

Intervention effectobservedoriginal resultnegativenot significant (as stated)measured

Claim · model-written summary

The decrease in soybean nodule number and weight with nitrogen was not significant at the other two locations.

Taxon: SoybeanGlycine maxt0
Treatment: Addition of nitrogene0
Outcome: number and weight of nodulese0
Direction: decreasee0
Setting: other two 1ocationse0

Not reportedComparator

Verbatim

e0
“Addition of nitrogen markedly decreased the number and weight of nodules at Khumaltar but this decrease was not significant at other two 1ocations.”
✓ located verbatim in the source · abstract, characters 464–611

t0
“Soybean Yield”
✓ located verbatim in the source · title, characters 37–50

Title

Effect of Nitrogen and Phosphorus on Soybean Yield and Nitrogen Fixation in Soils with Different Phosphorus Fixation Capacity

S. L. Maskey; S. Bhattarai Nepal Journal of Science and Technology 2003

Other claims from this paper (6)

Intervention effect Phosphorus increased soybean nodule number and weight at Bhairahawa and Panchkhal.
Intervention effect Phosphorus significantly increased soybean biomass at physiological maturity at every site.
Intervention effect Nitrogen markedly decreased soybean nodule number and weight at Khumaltar.
Intervention effect Nitrogen decreased atmospheric nitrogen contribution at Khumaltar from 81 to 66.
Intervention effect Nitrogen decreased atmospheric nitrogen contribution at Panchkhal from 83 to 56.
Intervention effect Phosphorus increased soybean grain and stubble yield at Khumaltar and Bhairahawa only.

Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

The liquid spray did not significantly decrease late blight occurrence on potatoes.

Taxon: potatoesSolanum tuberosumt0
Treatment: liquid spraye3
Interactor: Phytophthora infestansPhytophthora infestanse3pathogen
Outcome: occurrencee3
Direction: decreasee3

Not reportedComparator

Verbatim

t0
“Alternative protection of potatoes”
✓ located verbatim in the source · title, characters 0–34

e3
“The liquid spray against the late blight (Phytophthora infestans) did not signincantly decrease neither occurrence oflate blight or the yield”
✓ located verbatim in the source · abstract, characters 377–518

Title

Alternative protection of potatoes in organic farming.

Jaroslav Tomášek; Petr Dvořák Organic Eprints (International Centre for Research in Organic Food Systems, and Research Institute of Organic Agriculture) 2009

Other claims from this paper (4)

Associationobservedoriginal resultnegativenot significant (as stated)measured

Claim · model-written summary

Coffee yield tended to decline as shade trees matured, without significance.

Taxon: CoffeeCoffeae0
Interactor: shade treese0other
Outcome: Coffee yielde0
Direction: decreasee0

Verbatim

e0
“Coffee yield tended to decrease as the shade trees matured, but this was not significant.”
✓ located verbatim in the source · abstract, characters 712–801

Title

Ecosystem services trajectories in coffee agroforestry in Colombia over 40 years

V. De Leijster; M.J. Santos; M.W. Wassen; et al. Ecosystem Services 2021. doi:10.1016/j.ecoser.2021.101246

Other claims from this paper (9)

Association Carbon stock, habitat provisioning and timber volume followed positive asymptotic trajectories.
Association Coffee bean quality followed a positive asymptotic trajectory.
Association Erosion control and pest control did not change over time.
Association Carbon stock, erosion control and epiphyte richness were positively related.
Association Carbon stock traded off against coffee yield during the first ten years.
Association Coffee yield and erosion control were positively related over ten to twenty years.
Association Canopy cover best explained ecosystem service supply.
Association Agrochemical management, altitude and slope also influenced ecosystem service supply.
Recommendation The authors conclude agroforestry can rehabilitate ecosystem service supply.

“yield decrease”

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