Search claims · PlantClaims

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Increasing temperature decreases the maximum quantum yield under limiting CO2 and 40% O2 in maize.

Taxon: maizeZea mayse0
Treatment: increasing temperaturee1
Outcome: QCO,e1
Direction: decreasee1

Not reportedComparator

Verbatim

e0
“photosynthesis in maize (Zea mays) shows a dual response to varying [O,]”
✓ located verbatim in the source · abstract, characters 149–221

e1
“increasing temperature, which favors photorespiration, causes a decrease in QCO,”
✓ located verbatim in the source · abstract, characters 1061–1141

Title

The C02-Concentrating Mechanism and Photorespiration

Ziyu Dai; Maurice S. B. Ku; Cerald E. Edwards 1993

Other claims from this paper (7)

Observationobservedoriginal resultmeasured

Claim · model-written summary

Shoot number declined by 51% in wheat during shoot and ear development.

Taxon: wheatTriticum aestivume0
Outcome: number of shootse0
Direction: decreasee0
Value: 51%e0

Verbatim

e0
“The average decrease in number of shoots during shoot/ear development was 51% in wheat”
✓ located verbatim in the source · abstract, characters 444–530

Title

Growth, yield and composition of four winter cereals. I. Biomass, grain yield and yield formation

J. Ellen Netherlands Journal of Agricultural Science 1993. doi:10.18174/njas.v41i2.628

Other claims from this paper (19)

Observation Triticale had the fewest shoots per area, 828/msuperscript 2.
Observation Barley had the most shoots per area, 1477/msuperscript 2.
Observation Shoot number declined by 54% in rye during shoot and ear development.
Observation Shoot number declined by 49% in triticale during shoot and ear development.
Observation Shoot number declined by 67% in barley during shoot and ear development.
Observation Rye and barley developed fastest and flowered and matured earlier than wheat and triticale.
Observation Rye first reached a closed canopy and had the lowest maximum LAI and shortest leaf area duration.
Observation Wheat and triticale stayed green longest.
Observation Wheat and triticale had average specific leaf weight of 4.3 mg/cmsuperscript 2.
Observation Rye and barley had average specific leaf weight of 3.7 mg/cmsuperscript 2.
Observation Barley grain growth at the linear stage was fastest at 1.89 mg grain-1 d-1.
Observation Rye grain growth at the linear stage was slowest at 0.89 mg grain-1 d-1.
Observation Wheat aboveground dry matter was 18 790 kg/ha.
Observation Rye aboveground dry matter was 15 230 kg/ha.
Observation Triticale aboveground dry matter was 18 300 kg/ha.
Observation Barley aboveground dry matter was 12 460 kg/ha.
Observation Grain yield was 8.74 t/ha for wheat and 6.64 t/ha for rye.
Observation Grain yield was 8.20 t/ha for triticale and 6.62 t/ha for barley.
Observation Cultivar yield differences were smaller for wheat and rye, and barley had the highest harvest index while rye had the lowest.

Mechanismauthor interpretationoriginal resultmeasured

Claim · model-written summary

The results suggest auxin decreases wall yield threshold independently of gibberellin.

Taxon: cowpeaVigna unguiculatat0
Treatment: auxine0
Outcome: yield threshold of the cell wall (Y)e0
Direction: decreasee0

Verbatim

e0
“auxin can decrease the yield threshold of the cell wall (Y) independently of gibberellin”
✓ located verbatim in the source · abstract, characters 866–954

t0
“Cowpea”
✓ located verbatim in the source · title, characters 120–126

Title

The Effects of Auxin on the Mechanical Properties in Vivo of Cell Wall in Hypocotyl Segments from Gibberellin-Deficient Cowpea Seedlings

Akane Okamoto; Masayuki Katsumi; Hisashi Okamoto Plant and Cell Physiology 1995. doi:10.1093/oxfordjournals.pcp.a078805

Other claims from this paper (7)

Intervention effect Auxin increased effective turgor in gibberellin deficient cowpea segments.
Intervention effect Auxin did not change wall extensibility in gibberellin deficient segments.
Observation Auxin induced growth promotion was halved in gibberellin deficient segments.
Intervention effect Auxin increased wall extensibility after GA3 pretreatment.
Intervention effect Auxin did not change intracellular pressure in U-segments or GA3-pretreated segments.
Mechanism The results suggest auxin increases extensibility only when gibberellin is present.
Mechanism The authors infer wall extensibility and yield threshold arise from distinct molecular processes.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Urea reduced mean second-cut yield by 5% relative to ammonium nitrate.

Taxon: grasst0
Organ / stage: second cute0
Treatment: ureae0
Outcome: mean yielde0
Direction: decreasee0
Value: 5%e0
Comparator: ammonium nitratee0

Verbatim

e0
“compared with ammonium nitrate, there was a mean yield decrease with urea of 2% at the first cut and 5% at the second cut”
✓ located verbatim in the source · abstract, characters 289–410

t0
“grass”
✓ located verbatim in the source · title, characters 34–39

Title

Urea as a nitrogen fertilizer for grass cut for silage

A. Lloyd The Journal of Agricultural Science 1992. doi:10.1017/s0021859600012211

Other claims from this paper (7)

Observation Relative dry matter yield differences between fertilizers varied by site.
Intervention effect Urea reduced mean first-cut yield by 2% relative to ammonium nitrate.
Intervention effect Urea gave lower herbage N content than ammonium nitrate at both cuts.
Intervention effect Urea gave lower apparent N recovery than ammonium nitrate at both cuts.
Association For early spring first-cut dressings, urea effectiveness increased with rainfall in the next three days.
Observation The rainfall relationship was much less evident at the second cut.
Association High soil pH or light texture did not markedly reduce urea effectiveness.

Mechanismauthor interpretationoriginal resultnegativemeasured

Claim · model-written summary

The ozone-related grain yield decrease was associated with reductions in individual grain weight and grains per head.

Taxon: spring wheatTriticum aestivumt0
Outcome: Grain yielde1
Qualifier: reductions in the weight of individual grains and in the number of grains per heade1

Verbatim

t0
“spring wheat (Triticum aestivum L.)”
✓ located verbatim in the source · title, characters 16–51

e1
“Grain yield decreased with increasing seasonal mean O 3 concentration as a result of reductions in the weight of individual grains and in the number of grains per head”
✓ located verbatim in the source · abstract, characters 1102–1269

Title

The response of spring wheat (Triticum aestivum L.) to ozone at higher elevations

J. FUHRER; A. GRANDJEAN GRIMM; W. TSCHANNEN; et al. New Phytologist 1992. doi:10.1111/j.1469-8137.1992.tb01106.x

Other claims from this paper (12)

Association Grain yield of spring wheat decreased with increasing seasonal mean ozone concentration.
Observation Ozone reduced the harvest index of spring wheat slightly, indicating a shift in biomass allocation.
Association With increasing ozone, protein, starch and K concentrations of spring wheat grain showed small or no changes.
Association With increasing ozone, protein quality (Zeleny value) of spring wheat grain showed small or no changes.
Association The response of grain yield to increasing ozone was smaller in 1990 than in 1989.
Intervention effect Ambient ozone levels reduced spring wheat grain yield by 9-5% in 1989.
Intervention effect Ambient ozone levels reduced spring wheat grain yield by 11.6% in 1990.
Association Spring wheat shows reduced ozone sensitivity at the higher elevation compared with an earlier study at 485 m.
Intervention effect Chamber enclosure significantly reduced spring wheat grain and straw yield in 1989 compared with ambient plots.
Intervention effect In 1990, chamber enclosure gave no difference in spring wheat grain and straw yield compared with ambient plots.
Intervention effect The open-top chamber environment was warmer and more humid than the open field.
Intervention effect The open-top chamber environment reduced soil moisture compared with the open field.

Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

Exposures of at least 18 seconds decreased growth and yield.

Taxon: wheatTriticum aestivumt0
Treatment: Microwave exposures for 18 sec onwardse0
Outcome: plant growth and yielde0
Direction: decreasee0

Not reportedComparator

Verbatim

e0
“Microwave exposures for 18 sec onwards, however, caused injurious effects that resulted to a significant decrease in the plant growth and yield of wheat.”
✓ located verbatim in the source · abstract, characters 666–819

t0
“wheat”
✓ located verbatim in the source · title, characters 71–76

Title

Effect of microwave irradiation on the ear-cockle disease and yield of wheat.

Matiyar Rahaman Khan; Farzana Hayat Nematologia mediterranea 1999

Other claims from this paper (6)

Intervention effect Microwave exposure reduced seed mycoflora in soaked and unsoaked seed.
Intervention effect Microwave exposure increased mortality of Anguina tritici juveniles in cockles.
Intervention effect Seed germination fell after exposures of at least 16 seconds.
Intervention effect Microwave treatment suppressed pathogenic effects of A. tritici.
Intervention effect Fourteen to sixteen second exposure increased growth and yield of inoculated plants.
Intervention effect Microwave treatment reduced ear cockle formation.

Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

Meteorological changes were estimated to reduce peanut yield by 137 kg/ha in the 1980s.

Taxon: peanutArachis hypogaeae0
Outcome: peanut yielde0
Direction: decreasee0
Value: 137 kg/hae0
Qualifier: 1980'se0

Not reportedSetting

Verbatim

e0
“Meteorological changes were statistically estimated to decrease peanut yield by 137 kg/ha and 194 kg/ha in the 1980's and late 1980's, respectively”
✓ located verbatim in the source · abstract, characters 304–451

Title

Peanut Yield Decline in the Southeast and Economically Feasible Solutions

M. C. Lamb; J. I. Davidson; C. L. Butts Peanut Science 1993. doi:10.3146/i0095-3679-20-1-10

Other claims from this paper (8)

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

With four irrigations, ethephon reduced corn yield linearly by about 13% in both years.

Taxon: cornZea mays subsp. mayst0
Treatment: ethephont0
Outcome: yieldt0
Direction: decreasee0
Value: about 13%e0
Comparator: treatments irrigated four timese0

Verbatim

e0
“treatments irrigated four times showed a linear decrease of about 13% in both years”
✓ located verbatim in the source · abstract, characters 1882–1965

t0
“Grain Yield and Water Consumption of Ethephon‐Treated Corn”
✓ located verbatim in the source · title, characters 0–58

Title

Grain Yield and Water Consumption of Ethephon‐Treated Corn under Different Irrigation Regimes

Riccardo d'Andria; Fabrizio Quaglietta Chiarandà; Antonella Lavini; et al. Agronomy Journal 1997. doi:10.2134/agronj1997.00021962008900010016x

Other claims from this paper (7)

Intervention effect Increasing ethephon rates reduced corn LAI, plant height and dry matter accumulation.
Intervention effect Increasing ethephon rates reduced corn water consumption.
Intervention effect In rainfed corn, increasing ethephon rate raised yield in 1993, maximally about 200% (1.6 t ha −1).
Intervention effect In rainfed corn, increasing ethephon rate raised yield in 1994, maximally 75% (1.7 t ha −1).
Intervention effect Ethephon had no reported grain-yield effect under weekly irrigation and irrigation at two growth stages.
Association Kernel number had the greatest influence on corn grain production.
Recommendation The authors suggest ethephon may increase corn grain yield when water supply limits growth.

Associationobservedoriginal resultmeasured

Claim · model-written summary

Weed emergence was associated with a decrease in rice panicle number of 1.3-2.9.

Taxon: RiceOryza sativat0
Treatment: weed emergencee3
Interactor: weede3weed
Outcome: panicle numbere4
Direction: decreasee4
Value: 1.3-2.9e4

Verbatim

t0
“Weeds Emerged at Different Developmental Stages of Rice”
✓ located verbatim in the source · title, characters 11–66

e3
“affected by weed emergence were decrease of plant height by 2-4㎝”
✓ located verbatim in the source · abstract, characters 420–484

e4
“decrease of plant height by 2-4㎝, panicle number by 1.3-2.9”
✓ located verbatim in the source · abstract, characters 452–511

Title

Effects of Weeds Emerged at Different Developmental Stages of Rice on Its Yield in Gangweon Province

K.S. Kim; M. An; J.S. Chang; et al. Korean Journal of Weed Science 1990

Other claims from this paper (8)

Mechanismhypothesisoriginal resultbasis n/a

Claim · model-written summary

The decrease in the quantum yield of PSII electron transport in senescent leaves is suggested to be downregulated by more QB-non-reducing PSII reaction centres and higher nonphotochemical quenching.

Taxon: maizeZea mayst0
Outcome: quantum yield of PSII electron transporte6
Qualifier: increase in the proportion of QB-non-reducing PSII reaction centres and in the non-photochemical quenchinge6

Verbatim

e6
“Based on these results, it is suggested that the decrease in the quantum yield of PSII electron transport in senescent leaves was downregulated by an increase in the proportion of QB-non-reducing PSII reaction centres and in the non-photochemical quenching”
✓ located verbatim in the source · abstract, characters 1351–1607

t0
“senescent leaves of maize plants”
✓ located verbatim in the source · title, characters 50–82

Title

Modifications in photosystem II photochemistry in senescent leaves of maize plants

C. Lu; J. Zhang Journal of Experimental Botany 1998. doi:10.1093/jxb/49.327.1671

Other claims from this paper (11)

“yield decrease”

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