Search claims · PlantClaims

Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

The rice yield decrease under upland conditions was mainly derived from a decrease in above-ground total dry matter rather than in harvest index.

Taxon: riceOryza sativae0
Outcome: above-ground total dry matter (TDM)e2
Direction: decreasee2
Qualifier: rather than a decrease in harvest index (HI)e2
Setting: Kyoto, Japane2

Verbatim

e0
“Recent studies have focused on the improvement of rice productivity under aerobic conditions”
✓ located verbatim in the source · abstract, characters 0–92

e2
“A three-year field experiment in the temperate climate of Kyoto, Japan, indicated that the decrease in yield was mainly derived from a decrease in above-ground total dry matter (TDM) rather than a decrease in harvest index (HI)”
✓ located verbatim in the source · abstract, characters 315–542

Title

Adaptability of High-Yielding Rice Cultivars in Relation to Biomass Productivity under Moderately Water Stressed Upland Conditions

Tomohiro Hyoda; Koki Homma; Tatsuhiko Shiraiwa; et al. Agricultural Sciences 2015. doi:10.4236/as.2015.63036

Other claims from this paper (6)

Intervention effectobservedoriginal resultnegativesimulated

Claim · model-written summary

Decreased carbon dioxide concentration decreased simulated maize yield.

Taxon: maizeZea mayst0
Treatment: decrease carbondioxide concentratione0
Outcome: yieldt0
Direction: decreasee0

Not reportedComparator

Verbatim

e0
“decrease carbondioxide concentration”
✓ located verbatim in the source · abstract, characters 1628–1664

t0
“yield of rainfed maize”
✓ located verbatim in the source · title, characters 25–47

Title

Simulation of growth and yield of rainfed maize under varied agronomic management and changing climatic scenario in Nawalparasi, Nepal

Umesh Shrestha; Lal Prasad Amgain; Tika Bahadur Karki; et al. Journal of Maize Research and Development 2015. doi:10.3126/jmrd.v1i1.14250

Other claims from this paper (18)

Observation RML-4/RML-17 had higher kernel rows per ear, at 13.77.
Observation RML-4/RML-17 had higher kernels per row, at 30.42.
Observation RML-4/RML-17 had higher test weight, at 244.9 g.
Observation RML-4/RML-17 grain yield was significantly higher at 6.03 t/ha than the listed cultivars.
Intervention effect April 7 sowing had higher kernels per row at 27.97.
Intervention effect April 7 sowing had higher kernel rows per ear at 12.89.
Intervention effect April 7 sowing had higher 1000 grain weight at 230 g.
Intervention effect April 7 sowing produced significantly higher grain yield of 5.13t/ha.
Method / resource The calibrated model validated days to anthesis with RMSE 0.426 day and D-index 0.998.
Method / resource The model validated physiological maturity with RMSE 0.674 day and D-index 0.999.
Method / resource The model validated grain number with RMSE 85.287 grain /m2 and D-index 0.993.
Method / resource The model validated unit weight with RMSE 0.012 g/kernel and D-index 0.854.
Method / resource The model validated grain yield with RMSE 54.94 kg/ha and D-index 1.00.
Method / resource The model was sensitive to climate change parameters.
Intervention effect Increasing maximum and minimum temperature decreased simulated rainfed maize yield.
Intervention effect Decreased solar radiation decreased simulated maize yield.
Intervention effect A 2°C temperature rise decreased spring maize yield by around 15-20%.
Intervention effect The negative temperature effect was more pronounced in hybrid maize than other cultivars.

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

T 1 produced higher water use efficiency without a significant decrease in yield parameters.

Taxon: TomatoSolanum lycopersicumt0
Treatment: T 1e0
Outcome: water use efficiency ( WUE )e0
Direction: highere0

Not reportedComparator

Verbatim

e0
“T 1 produced higher water use efficiency ( WUE ) with no significant decrease in yield parameters”
✓ located verbatim in the source · abstract, characters 1081–1178

t0
“Tomato”
✓ located verbatim in the source · title, characters 29–35

Title

Modeling the Relationship of Tomato Yield Parameters with Deficit Irrigation at Different Growth Stages

Xuelian Jiang; Yueling Zhao; Rui Wang; et al. HortScience 2019. doi:10.21273/hortsci14179-19

Other claims from this paper (6)

Intervention effect Deficit irrigation significantly decreased evapotranspiration and yield and fruit size measures, except for T 1.
Association Relative yield and fruit dimensions rose linearly with relative seasonal evapotranspiration.
Observation Yield and fruit measures were more sensitive to water deficit at stage 2 than stage 3.
Method / resource Minhas and Singh model estimates of yield were similar to observations.
Method / resource The Minhas model gave good estimates of fruit length and diameter.
Recommendation The authors recommend the Blank model to calculate single-fruit weight under deficit irrigation.

Intervention effectauthor interpretationoriginal resultnegativeprojected

Claim · model-written summary

A 50% reduction of plant-available N would decrease crop yield by 17%.

Taxon: crope6
Treatment: reduction of plant-available N by 50%e6
Outcome: crop yielde6
Direction: decreasee6
Value: 17%e6

Not reportedComparator

Verbatim

e6
“a reduction of plant-available N by 50% would lead to a decrease in crop yield by 17% and a concomitant increase in N response efficiency by 67%”
✓ located verbatim in the source · abstract, characters 1123–1267

Title

Nutrient saturation of crop monocultures and agroforestry indicated by nutrient response efficiency

Marcus Schmidt; Marife D. Corre; Bomin Kim; et al. Nutrient Cycling in Agroecosystems 2020. doi:10.1007/s10705-020-10113-6

Other claims from this paper (10)

Intervention effect Crop yield, plant-available nutrients and NRE were comparable between alley-cropping agroforestry and cropland monocultures.
Observation Trees in agroforestry had high nutrient response efficiency.
Association Trees in agroforestry contributed to nutrient retention of the agroforestry system as a whole.
Association The NRE of crops had a unimodal relationship with plant-available nutrients.
Observation NRE values of crops were beyond optimum in both agroforestry and monoculture, indicating nutrient saturation.
Intervention effect A 50% reduction of plant-available N would increase N response efficiency by 67%.
Intervention effect A similar reduction of plant-available P would decrease crop yield by 8%.
Intervention effect A similar reduction of plant-available P would increase P response efficiency by 83%.
Recommendation Fertilizer inputs can be reduced or optimized without sacrificing crop yield or profit.
Association Optimized fertilization is expected to have beneficial effects on nutrient retention and redistribution.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Severe drought caused a greater grain yield decrease in Yangmai-16.

Taxon: wheatTriticum aestivumt0
Material: Yangmai-16e0
Treatment: severe drought stresse0
Outcome: grain yielde0
Direction: decreasee0

Not reportedComparator

Verbatim

e0
“Under severe drought stress, Yangmai-16 displayed relatively less adaptability to drought, with a slower recovery after re-watering and a greater decrease in grain yield.”
✓ located verbatim in the source · abstract, characters 1156–1326

t0
“wheat (Triticum aestivum) cultivars”
✓ located verbatim in the source · title, characters 71–106

Title

Adaptation to and recovery from drought stress at vegetative stages in wheat (Triticum aestivum) cultivars

Muhammad Abid; Zhongwei Tian; Syed Tahir Ata-Ul-Karim; et al. Functional Plant Biology 2016. doi:10.1071/fp16150

Other claims from this paper (9)

Intervention effectobservedoriginal resultpositiveprojected

Claim · model-written summary

Under GISS A2 2080, a projected 39.9% sorghum yield decrease became a 17.6% increase with later maturing cultivars.

Taxon: sorghumSorghume0
Treatment: developing later maturing new cultivarse1
Outcome: sorghum yielde0
Direction: increasee0
Value: 17.6%e0
Qualifier: 39.9% decreasee0

Not reportedComparator

Verbatim

e0
“a 39.9% decrease in sorghum yield was converted to a 17.6% increase”
✓ located verbatim in the source · abstract, characters 1872–1939

e1
“developing later maturing new cultivars”
✓ located verbatim in the source · abstract, characters 1538–1577

Title

Adaptation assessments for crop production in response to climate change in Cameroon

Munang Tingem; Mike Rivington; Gianni Bellocchi HAL (Le Centre pour la Communication Scientifique Directe) 2009. doi:10.1051/agro:2008053/pdf

Other claims from this paper (9)

Observation Future bambara groundnut yield is projected to increase substantially, varying by scenario and region.
Observation Future soybean yield is projected to increase substantially.
Observation Future groundnut yield is projected to increase substantially.
Observation Future maize yield is projected to show little, no, or negative change depending on climate scenario and region.
Observation Future sorghum yield is projected to show little, no, or negative change depending on climate scenario and region.
Intervention effect Changing sowing dates may fail to offset adverse climate effects in Cameroon.
Intervention effect Later maturing new cultivars gave the highest productivity increases under projected scenarios.
Intervention effect Under GISS A2 2080, a projected 14.6% maize yield reduction became a 32.1% increase with later maturing cultivars.
Intervention effect Under GISS A2 2080, bambara groundnut yields were projected to almost triple.

Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

Quantum yield varied significantly with oxygen partial pressure, with the greatest decrease at 2 kPa oxygen.

Taxon: radishRaphanus sativust0
Treatment: 2 kPa of oxygene0
Outcome: quantum yielde0
Direction: decreasee0
Value: 2 kPa of oxygene0
Comparator: oxygen partial pressurese0

Verbatim

e0
“The quantum yield data showed significant variation among the oxygen partial pressures with the most significant decrease at 2 kPa of oxygen”
✓ located verbatim in the source · abstract, characters 859–999

t0
“radish”
✓ located verbatim in the source · title, characters 12–18

Title

Response of radish to light and oxygen at reduced atmospheric pressure

Cara Wehkamp; Michael Stasiak; Mike Dixon 41st International Conference on Environmental Systems 2011. doi:10.2514/6.2011-5169

Other claims from this paper (6)

Intervention effect Reduced total pressure caused little difference in light response slope or quantum yield.
Association Light response curves separated slightly more across pressures as light increased.
Intervention effect Pressure significantly affected whole canopy carbon dioxide compensation points.
Intervention effect Oxygen significantly affected whole canopy carbon dioxide compensation points.
Intervention effect Hypobaria reduced carbon dioxide compensation points.
Intervention effect Decreased oxygen lowered compensation points, with the lowest at 10 kPa total pressure and 2 kPa oxygen, 18% of ambient.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Organophosphate treatments could decrease yield through toxicity when nematode populations were low.

Taxon: CottonGossypium hirsutumt0
Treatment: organophosphatee1
Outcome: yielde0
Direction: decreasee0
Qualifier: the toxicity of the materials was manifested when nematode populations were lowe0

Not reportedComparator

Verbatim

e0
“or in a yield decrease, because the toxicity of the materials was manifested when nematode populations were low.”
✓ located verbatim in the source · abstract, characters 851–963

e1
“with organophosphate and carbamate nematicides”
✓ located verbatim in the source · abstract, characters 706–752

t0
“Cotton”
✓ located verbatim in the source · title, characters 61–67

Title

Granular Nematicides as Adjuncts to Fumigants for Control of Cotton Root-knot Nematodes.

E C Jorgenson PubMed 1979

Other claims from this paper (12)

Intervention effect Cotton growth and yield were best with fumigants combined with organophosphate nematicides.
Intervention effect Cotton growth and yield were best with fumigants combined with carbamate nematicides.
Intervention effect Organophosphates alone failed to give season-long root-knot nematode control.
Intervention effect Carbamates alone failed to give season-long root-knot nematode control.
Mechanism Long-term control was poor because temporary sublethal effects diminished soon enough for nematodes to reproduce.
Observation Nematodes survived treatments and a year of nonhost culture and damaged a susceptible crop two years after treatment.
Intervention effect Fumigant-treated plots showed no such subsequent crop damage.
Intervention effect Fumigant plus organophosphate plots showed no such subsequent crop damage.
Intervention effect Fumigant plus carbamate plots showed no such subsequent crop damage.
Intervention effect Organophosphate treatment of seed or cotton gave little or no yield increase because control was minimal and temporary.
Intervention effect Carbamate treatment of seed or cotton gave little or no yield increase because control was minimal and temporary.
Intervention effect Carbamate treatments could decrease yield through toxicity when nematode populations were low.

Observationobservedoriginal resultmeasured

Claim · model-written summary

The extent of yield decrease with higher soil ESP was higher for varieties Pragati and CKP-25.

Taxon: LemongrassCymbopogon citratust0
Material: Pragati and CKP-25e0
Outcome: extent of decrease in yielde0
Direction: highere0

Verbatim

e0
“the extent of decrease in yield was lower for the varieties Praman· and Nima and higher for the varieties Pragati and CKP-25”
✓ located verbatim in the source · abstract, characters 538–662

t0
“Lemongrass”
✓ located verbatim in the source · title, characters 68–78

Title

Variation in Yield, Free Proline Content and Cation Accumulation of Lemongrass (Cymbopogon flexousus) Varieties Grown in Sodic Soils

Arun Prasad; R K Lal; Sukhmal Chand; et al. Annals of Arid Zone 2016. doi:10.56093/aaz.v49i2.63961

Other claims from this paper (11)

Mechanismauthor interpretationoriginal resultnegativemeasured

Claim · model-written summary

The decrease in seed yield under stress was largely due to fewer pods and seeds per pod.

Taxon: cowpeaVigna unguiculatae0
Outcome: The decrease in seed yielde1
Qualifier: largely due to reductions in pods plant −1 and seeds pod −1e1

Verbatim

e0
“three cowpea [ Vigna unguiculata (L.) Walp.] genotypes”
✓ located verbatim in the source · abstract, characters 135–189

e1
“The decrease in seed yield was largely due to reductions in pods plant −1 and seeds pod −1”
✓ located verbatim in the source · abstract, characters 1921–2011

Title

Reproductive Abscission and Yield of Irrigated and Drought Stressed Cowpea

H. Tewolde; A. K. Dobrenz; D. L. Robinson; et al. Journal of Agronomy and Crop Science 1991. doi:10.1111/j.1439-037x.1991.tb00903.x

Other claims from this paper (17)

Observation Reproductive abscission of CA‐5 and AZ‐54 ranged between 68 and 76 % in the first experiment.
Observation Reproductive abscission of SPH ranged between 86 and 89 % in the first experiment.
Observation CA‐5 and AZ‐54 retained two to three pods per peduncle.
Observation SPH retained only one mature pod per peduncle.
Observation Average seed yields of SPH and AZ‐54 were 45 and 50 % of CA‐5.
Intervention effect Drought stress did not affect production of floral buds in cowpea.
Intervention effect Drought stress significantly increased percent reproductive abscission of CA‐5.
Intervention effect Drought stress decreased pod retention of CA‐5.
Intervention effect Abscission in the bottom two‐third nodes of cowpea rose from 82 % in well‐irrigated to 93 % in non‐irrigated plants.
Intervention effect The increase in abscission in non‐irrigated cowpea corresponded to a nearly 60 % reduction in pod retention.
Intervention effect Pods per peduncle in the bottom two‐third nodes of cowpea fell from 1.9 in well‐irrigated to fewer in non‐irrigated plants.
Intervention effect Drought stress did not affect abscission or pod retention in the top one‐third nodes of cowpea.
Intervention effect Stress decreased peduncles per plant and seeds per pod in cowpea.
Intervention effect Stress decreased dry matter and seed yield per plant in cowpea.
Intervention effect Stress did not affect seed weight or harvest index in cowpea.
Mechanism Fewer pods under stress resulted from fewer peduncles and more reproductive abscission in cowpea.
Association External conditions that raise abscission beyond normal levels are concluded to reduce cowpea seed yield.

“yield decrease”

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