Search claims · PlantClaims

Associationauthor interpretationoriginal resultnegativemeasured

Claim · model-written summary

At above-optimum populations, the number of grains per ear has the greatest influence on the decrease in barley grain yield.

Taxon: barleyHordeum vulgaret0
Treatment: above-optimum populationse1
Outcome: decrease in grain yielde1
Direction: decreasee1
Qualifier: the number of grains per ear is the component having greatest influencee1

Not reportedComparator

Verbatim

t0
“barley”
✓ located verbatim in the source · title, characters 40–46

e1
“It is concluded that the number of grains per ear is the component having greatest influence on the decrease in grain yield at above-optimum populations”
✓ located verbatim in the source · abstract, characters 764–916

Title

Plant population and shading studies in barley

R. W. Willey; R. Holliday The Journal of Agricultural Science 1971. doi:10.1017/s0021859600064510

Other claims from this paper (9)

Mechanismauthor interpretationoriginal resultnegativemeasured

Claim · model-written summary

The lower water use efficiency under high irrigation frequency resulted mainly from the decrease in fresh fruit yield.

Taxon: OkraAbelmoschus esculentust0
Treatment: high irrigation frequencye0
Outcome: water use efficiencye0
Qualifier: decrease in fresh fruit yielde0

Verbatim

e0
“The reduction in water use efficiency under high irrigation frequency as compared to low irrigation frequency resulted primarily from decrease in fresh fruit yield”
✓ located verbatim in the source · abstract, characters 1134–1297

t0
“Okra”
✓ located verbatim in the source · title, characters 18–22

Title

Yield Response Of Okra To Irrigation Frequency And Amount In A Sprinkler Irrigation System

Adeogun, E. O. Zenodo (CERN European Organization for Nuclear Research) 2016. doi:10.5281/zenodo.844562

Other claims from this paper (3)

Intervention effect Fresh fruit yield of okra was significantly higher under low irrigation frequency than under high irrigation frequency.
Intervention effect Okra yield was significantly reduced with additional irrigation amount and increased frequency.
Intervention effect Water use efficiency of okra increased appreciably under low irrigation frequency.

Mechanismauthor interpretationoriginal resultnegativemeasured

Claim · model-written summary

Reduced crop water requirement was followed by lower leaf area index, dry biomass and grain yield.

Taxon: SoybeanGlycine maxt0
Outcome: decrease in LAI and TDB and a subsequent decrease in grain yielde0
Direction: decreasee0
Qualifier: decreased CWRe0

Verbatim

t0
“Soybean”
✓ located verbatim in the source · title, characters 99–106

e0
“decreased CWR which in turn caused the decrease in LAI and TDB and a subsequent decrease in grain yield”
✓ located verbatim in the source · abstract, characters 693–796

Title

The Effect of Deficit Irrigation on Root/shoot Ratio, Water Use Efficiency and Yield Efficiency of Soybean

Shakil Uddin Ahmed; Masateru Senge; Kengo Ito; et al. Journal of Rainwater Catchment Systems 2010. doi:10.7132/jrcsa.kj00006069061

Other claims from this paper (6)

Association Soybean seed yield correlated with crop water requirement, leaf area index and total dry biomass under water deficits.
Intervention effect Water stress decreased soybean crop water requirement.
Association Water use efficiency and yield efficiency rose with root/shoot ratio through D_4, then declined at D_5.
Observation D_4 produced the highest yield efficiency for economic water use.
Intervention effect D_4 produced 21% lower yield per plant than full irrigation.
Intervention effect D_4 could conserve 18% of irrigation water relative to full irrigation for the same yield.

Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

Salt stress induced a linear decrease in biological yield, paddy yield and total plant biomass.

Taxon: riceOryza sativat0
Treatment: Salt stresse0
Outcome: biological and paddy yield and total plant biomasse0
Direction: linear decreasee0

Verbatim

e0
“Salt stress induced a linear decrease in biological and paddy yield and total plant biomass”
✓ located verbatim in the source · abstract, characters 1360–1451

t0
“EFFECT OF FLUCTUATING SALINITY AT DIFFERENT GROWTH STAGES ON PHYSIOLOGICAL AND YIELD RELATED PARAMETERS OF RICE (ORYZA SATIVA L.)”
✓ located verbatim in the source · title, characters 0–129

Title

EFFECT OF FLUCTUATING SALINITY AT DIFFERENT GROWTH STAGES ON PHYSIOLOGICAL AND YIELD RELATED PARAMETERS OF RICE (ORYZA SATIVA L.)

Yasser Yaghoubian; Hemmatollah Pirdashti; A. Mottaghian; et al. International journal of agriculture 2012

Other claims from this paper (12)

Intervention effect Increasing salinity rapidly affected rice leaf area and active leaf number.
Observation Salinity did not affect rice tiller number.
Observation Salinity significantly affected rice flag leaf area during grain filling.
Intervention effect Salinity reduced rice chlorophyll contents by up to 16.5% compared with control.
Intervention effect Salinity reduced rice relative water content by up to 21% compared with control.
Observation Increasing salt stress significantly reduced rice biological, paddy and straw yields.
Observation Increasing salt stress significantly reduced rice biomass, fertile tillers, height, filled grain and 1000-grain weight.
Observation Increasing salt stress significantly reduced rice root length, volume and biomass.
Observation Harvest index followed a second degree response to salt stress.
Association Biological yield and grain number per plant were positively and significantly correlated with paddy yield.
Association Grain number per panicle was negatively and significantly correlated with paddy yield.
Intervention effect Fluctuating salt stress at early stages reduced rice yield more than stress at other stages.

Associationobservedoriginal resultnegativesimulated

Claim · model-written summary

Linear regression across models predicts a 6% state-averaged yield decrease per 1°C rise in warm-season average air temperature.

Taxon: maizeZea mayst0
Treatment: 1°C increase in warm season average air temperaturee2
Outcome: state-averaged yielde2
Direction: decreasee2
Value: 6%e2

Verbatim

t0
“Climate Change and Maize Yield in Iowa”
✓ located verbatim in the source · title, characters 0–38

e2
“Linear regression of all models predicts a 6% state-averaged yield decrease for every 1°C increase in warm season average air temperature”
✓ located verbatim in the source · abstract, characters 905–1042

Title

Climate Change and Maize Yield in Iowa

Hong Xu; Tracy E. Twine; Evan Girvetz PLoS ONE 2016. doi:10.1371/journal.pone.0156083

Other claims from this paper (3)

Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

Unprotected B. campestris had a significant yield decrease.

Taxon: B. campestrisBrassica rapa subsp. oleiferae0
Treatment: unprotectede1
Outcome: decreasee0
Direction: decreasee0

Not reportedComparator

Verbatim

e0
“B. campestris a significant decrease.”
✓ located verbatim in the source · abstract, characters 790–827

t0
“RESPONSE OF FOUR BRASSICA SEED CROP SPECIES TO ATTACK BY THE CRUCIFER FLEA BEETLE, PHYLLOTRETA CRUCIFERAE”
✓ located verbatim in the source · title, characters 0–105

e1
“Nevertheless the unprotected B. juncea treatment yielded as much as the protected; B. napus, however, suffered an apparent appreciable decrease and B. campestris a significant decrease.”
✓ located verbatim in the source · abstract, characters 642–827

Title

RESPONSE OF FOUR BRASSICA SEED CROP SPECIES TO ATTACK BY THE CRUCIFER FLEA BEETLE, PHYLLOTRETA CRUCIFERAE

L. G. PUTNAM Canadian Journal of Plant Science 1977. doi:10.4141/cjps77-143

Other claims from this paper (7)

Intervention effect Unprotected B. hirta seedlings sustained little flea beetle damage.
Intervention effect Unprotected B. hirta had seed yield as high as protected B. hirta.
Observation Unprotected B. juncea seedlings sustained severe damage.
Observation Unprotected B. napus seedlings sustained severe damage.
Observation Unprotected B. campestris seedlings sustained severe damage.
Intervention effect Unprotected B. juncea yielded as much as protected B. juncea.
Intervention effect Unprotected B. napus showed an apparent appreciable yield decrease.

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 resultnegativemeasured

Claim · model-written summary

Excessive nitrogen could decrease economic coefficient.

Taxon: peanutArachis hypogaeat0
Treatment: Excessive nitrogene0
Outcome: economic coefficiente0
Direction: decreasee0

Not reportedComparator

Verbatim

e0
“Excessive nitrogen,however,could decrease economic coefficient,and thus decreasing pod yield.”
✓ located verbatim in the source · abstract, characters 521–614

t0
“peanut”
✓ located verbatim in the source · title, characters 89–95

Title

Effect of nitrogen levels on yield and sucrose synthesis of leaves in different types of peanut

Minglun Wang Plant Nutrition and Fertilizing Science 2008

Other claims from this paper (10)

Intervention effect Within a certain range, nitrogen increased activity of sucrose synthesis.
Intervention effect Within a certain range, nitrogen increased sucrose content of leaves.
Intervention effect Excessive nitrogen could decrease activity of sucrose phosphate sythase.
Intervention effect Excessive nitrogen could decrease sucrose content of leaves.
Intervention effect Excessive nitrogen could decrease pod yield.
Intervention effect Proper nitrogen could increase pod yield.
Intervention effect Proper nitrogen could increase valid pods per plant.
Intervention effect Proper nitrogen could increase plumpness rate of pod.
Observation The optimum nitrogen rate for var.vulgaris Harz in Arachis hypogaea was N 90 kg/ha.
Observation The optimum nitrogen rate for common type peanut was N 135 kg/ha.

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 resultnegativemeasured

Claim · model-written summary

Higher manure rates did not increase spelt yield and often tended to decrease it.

Treatment: Higher ratee0
Outcome: yielde0
Direction: decreasinge0

Not reportedTaxonComparator

Verbatim

e0
“Higher rate didn’t increase the yield and often caused tendency for yield decreasing.”
✓ located verbatim in the source · abstract, characters 660–745

Title

Reaction of winter spelt varieties on manure fertilization.

H. Sulewska; W. Koziara; Grażyna Szymańska; et al. Journal of Research and Applications in Agricultural Engineering 2010

Other claims from this paper (4)

Association Suitable rainfall years doubled spelt yield relative to low-rainfall years.
Intervention effect Applying 15 tons of manure per hectare was advantageous for spelt.
Observation Schwabenpelz and Badengold responded similarly to manure.
Observation Badengold yielded more than Schwabenpelz across years and cultivation variants.

“yield decrease”

Claim types

Direction of the findings

Over time

Claim type

Research area

Polarity

Statistics