Search claims · PlantClaims

2010s 6

Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

Petroleum polluted soil reduced grass yield less than diesel oil.

Taxon: Lolium perenne L. × hybridum, Poa pratensis, Festuca rubra, F. arundinacea, Phleum pratense and Dactylis glomerataDactylis glomerataLolium perennePoa pratensisLolium arundinaceumPhleum pratenseFestuca rubrat0
Treatment: petroleume0
Outcome: yield of all grassese0
Direction: decrease being lowere0
Comparator: diesel oile0

Verbatim

t0
“Lolium perenne L. × hybridum, Poa pratensis, Festuca rubra, F. arundinacea, Phleum pratense and Dactylis glomerata”
✓ located verbatim in the source · title, characters 18–132

e0
“Soil pollution with the tested products was found to significantly decrease the yield of all grasses, with the decrease being lower upon soil pollution with petroleum than with diesel oil.”
✓ located verbatim in the source · abstract, characters 346–534

Title

The resistance of Lolium perenne L. × hybridum, Poa pratensis, Festuca rubra, F. arundinacea, Phleum pratense and Dactylis glomerata to soil pollution by diesel oil and petroleum

Jadwiga Wyszkowska; Agata Borowik; Jan Kucharski Plant Soil and Environment 2019. doi:10.17221/42/2019-pse

Other claims from this paper (8)

Associationobservedoriginal resultno effectmeasured

Claim · model-written summary

Empirical LSD did not decrease with more replicates for rectangular blocks.

Taxon: Lolium perenneLolium perennee1
Treatment: number of replicatese4
Outcome: Empirical estimates of LSDe4
Direction: no_changeinferrede4
Qualifier: but not for rectangular blockse4

Verbatim

e1
“perennial ryegrass ( Lolium perenne L.)”
✓ located verbatim in the source · abstract, characters 771–810

e4
“Empirical estimates of LSD decreased with increasing number of replicates only for square blocks, but not for rectangular blocks”
✓ located verbatim in the source · abstract, characters 1389–1517

Title

Field Design Factors Affecting the Precision of Ryegrass Forage Yield Estimation

Raghuveer Sripathi; Patrick Conaghan; Dermot Grogan; et al. Agronomy Journal 2017. doi:10.2134/agronj2016.07.0397

Other claims from this paper (5)

Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

Diesel polluted soil significantly reduced yield of all tested grasses versus unpolluted soil.

Taxon: Lolium perenne L. × hybridum, Poa pratensis, Festuca rubra, F. arundinacea, Phleum pratense and Dactylis glomerataDactylis glomerataLolium perennePoa pratensisLolium arundinaceumPhleum pratenseFestuca rubrat0
Treatment: diesel oile0
Outcome: yield of all grassese0
Direction: decreasee0
Comparator: non-polluted soile0

Verbatim

t0
“Lolium perenne L. × hybridum, Poa pratensis, Festuca rubra, F. arundinacea, Phleum pratense and Dactylis glomerata”
✓ located verbatim in the source · title, characters 18–132

e0
“The achieved results were compared with those determined for grasses grown on the non-polluted soil. Soil pollution with the tested products was found to significantly decrease the yield of all grasses, with the decrease being lower upon soil pollution with petroleum than with diesel oil.”
✓ located verbatim in the source · abstract, characters 245–534

Title

The resistance of Lolium perenne L. × hybridum, Poa pratensis, Festuca rubra, F. arundinacea, Phleum pratense and Dactylis glomerata to soil pollution by diesel oil and petroleum

Jadwiga Wyszkowska; Agata Borowik; Jan Kucharski Plant Soil and Environment 2019. doi:10.17221/42/2019-pse

Other claims from this paper (8)

1990s 5

Show all 5 →

Associationobservedoriginal resultno effectmeasured

Claim · model-written summary

The conventional-to-reduced pressure yield ratio was not reported to decrease with increasing rain.

Taxon: perennial ryegrassLolium perennet0
Outcome: C 2 /R 2e0
Setting: 14 d after first mowinge0

Not reportedDirection

Verbatim

e0
“C 2 /Z 2 , but not C 2 /R 2 , decreased with increasing amount of rainfall in the 14 d after first mowing”
✓ located verbatim in the source · abstract, characters 733–838

t0
“perennial ryegrass”
✓ located verbatim in the source · title, characters 52–70

Title

Soil compaction effects on second‐harvest yields of perennial ryegrass for silage

J. T. Douglas Grass and Forage Science 1997. doi:10.1111/j.1365-2494.1997.tb02343.x

Other claims from this paper (5)

Mechanismauthor interpretationoriginal resultmeasured

Claim · model-written summary

The decrease in total N at low pH was attributed to increased N immobilization in the soil microbial biomass.

Taxon: Lolium perenneLolium perennet0
Outcome: decrease in total N recovered by the harvested materiale0
Qualifier: increased N immobilization in the soil microbial biomasse1

Verbatim

e0
“a large and highly significant decrease in total N recovered by the harvested material”
✓ located verbatim in the source · abstract, characters 406–492

e1
“was attributed to a combination of increased N immobilization in the soil microbial biomass and to the poor performance of both sown and self‐propagating indigenous species around pH 4·3”
✓ located verbatim in the source · abstract, characters 551–737

t0
“Lolium perenne and Trifolium repens”
✓ located verbatim in the source · title, characters 34–69

Title

Yield and nitrogen utilization by Lolium perenne and Trifolium repens on a limed stagnohumic‐gley soil in a pot experiment

D. W. HOPKINS; R. S. SHIEL; A. G. O'DONNELL Grass and Forage Science 1990. doi:10.1111/j.1365-2494.1990.tb02189.x

Other claims from this paper (5)

Intervention effect Yield and N content were greatest at pH 6.8 in pots sown with only Lolium perenne.
Intervention effect Yield and N content were greatest at soil pH 6.1 in pots sown with Trifolium repens and Lolium perenne.
Observation Trifolium repens established only at soil pH between 4·3 and 6·1.
Association Total N recovered by the harvested material decreased significantly as soil pH increased from 3·8 to 4·3.
Association Sward yield was slightly reduced as soil pH increased from 3·8 to 4·3.

Associationobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Total N recovered by the harvested material decreased significantly as soil pH increased from 3·8 to 4·3.

Taxon: Lolium perenneLolium perennet0
Treatment: increase in soil pH from 3·8 to 4·3e0
Outcome: total N recovered by the harvested materiale0
Direction: decreasee0

Verbatim

e0
“A small reduction in sward yield and a large and highly significant decrease in total N recovered by the harvested material, which occurred with increase in soil pH from 3·8 to 4·3”
✓ located verbatim in the source · abstract, characters 369–549

t0
“Lolium perenne and Trifolium repens”
✓ located verbatim in the source · title, characters 34–69

Title

Yield and nitrogen utilization by Lolium perenne and Trifolium repens on a limed stagnohumic‐gley soil in a pot experiment

D. W. HOPKINS; R. S. SHIEL; A. G. O'DONNELL Grass and Forage Science 1990. doi:10.1111/j.1365-2494.1990.tb02189.x

Other claims from this paper (5)

Intervention effect Yield and N content were greatest at pH 6.8 in pots sown with only Lolium perenne.
Intervention effect Yield and N content were greatest at soil pH 6.1 in pots sown with Trifolium repens and Lolium perenne.
Observation Trifolium repens established only at soil pH between 4·3 and 6·1.
Association Sward yield was slightly reduced as soil pH increased from 3·8 to 4·3.
Mechanism The decrease in total N at low pH was attributed to increased N immobilization in the soil microbial biomass.

1960s 3

Show all 3 →

Associationobservedoriginal resultno effectmeasured

Claim · model-written summary

BYDV infection did not lower plant survival over two years.

Taxon: perennial rye‐grassLolium perennet0
Interactor: infectione0pathogen
Outcome: plant survivale0
Direction: did not decreasee0
Qualifier: During a period of 2 yearse0

Verbatim

e0
“During a period of 2 years, infection did not decrease plant survival; infected plants produced more tillers and gave a higher ratio of vegetative to fertile tillers than healthy plants.”
✓ located verbatim in the source · abstract, characters 229–415

t0
“perennial rye‐grass”
✓ located verbatim in the source · title, characters 102–121

Title

Effects of barley yellow dwarf virus on the growth and yield of single plants and simulated swards of perennial rye‐grass

P. L. CATHERALL Annals of Applied Biology 1966. doi:10.1111/j.1744-7348.1966.tb06876.x

Other claims from this paper (12)

Observation Infected rye-grass had inconspicuous leaf symptoms.
Association Infected rye-grass was more stunted than healthy plants.
Association Infected rye-grass yielded less total herbage.
Association Infected rye-grass yielded more early spring herbage.
Association Infected plants produced more tillers.
Association Infected plants had a higher vegetative to fertile tiller ratio.
Association BYDV caused greater yield loss with two annual cuts than four.
Association Half-infected swards had intermediate yields.
Association Infected plants tended to dominate healthy plants in swards cut four times.
Observation The initial status quo was maintained in swards cut twice yearly.
Association Clover yielded more with infected rye-grass for most of the year.
Association Clover yield with infected rye-grass was lower in spring.

Associationobservedoriginal resultmeasured

Claim · model-written summary

Infected plants produced more tillers.

Taxon: perennial rye‐grassLolium perennet0
Outcome: tillerse0
Direction: moree0
Comparator: healthy plantse0

Verbatim

e0
“During a period of 2 years, infection did not decrease plant survival; infected plants produced more tillers and gave a higher ratio of vegetative to fertile tillers than healthy plants.”
✓ located verbatim in the source · abstract, characters 229–415

t0
“perennial rye‐grass”
✓ located verbatim in the source · title, characters 102–121

Title

Effects of barley yellow dwarf virus on the growth and yield of single plants and simulated swards of perennial rye‐grass

P. L. CATHERALL Annals of Applied Biology 1966. doi:10.1111/j.1744-7348.1966.tb06876.x

Other claims from this paper (12)

Observation Infected rye-grass had inconspicuous leaf symptoms.
Association Infected rye-grass was more stunted than healthy plants.
Association Infected rye-grass yielded less total herbage.
Association Infected rye-grass yielded more early spring herbage.
Association BYDV infection did not lower plant survival over two years.
Association Infected plants had a higher vegetative to fertile tiller ratio.
Association BYDV caused greater yield loss with two annual cuts than four.
Association Half-infected swards had intermediate yields.
Association Infected plants tended to dominate healthy plants in swards cut four times.
Observation The initial status quo was maintained in swards cut twice yearly.
Association Clover yielded more with infected rye-grass for most of the year.
Association Clover yield with infected rye-grass was lower in spring.

Associationobservedoriginal resultmeasured

Claim · model-written summary

Infected plants had a higher vegetative to fertile tiller ratio.

Taxon: perennial rye‐grassLolium perennet0
Outcome: ratio of vegetative to fertile tillerse0
Direction: highere0
Comparator: healthy plantse0

Verbatim

e0
“During a period of 2 years, infection did not decrease plant survival; infected plants produced more tillers and gave a higher ratio of vegetative to fertile tillers than healthy plants.”
✓ located verbatim in the source · abstract, characters 229–415

t0
“perennial rye‐grass”
✓ located verbatim in the source · title, characters 102–121

Title

Effects of barley yellow dwarf virus on the growth and yield of single plants and simulated swards of perennial rye‐grass

P. L. CATHERALL Annals of Applied Biology 1966. doi:10.1111/j.1744-7348.1966.tb06876.x

Other claims from this paper (12)

Observation Infected rye-grass had inconspicuous leaf symptoms.
Association Infected rye-grass was more stunted than healthy plants.
Association Infected rye-grass yielded less total herbage.
Association Infected rye-grass yielded more early spring herbage.
Association BYDV infection did not lower plant survival over two years.
Association Infected plants produced more tillers.
Association BYDV caused greater yield loss with two annual cuts than four.
Association Half-infected swards had intermediate yields.
Association Infected plants tended to dominate healthy plants in swards cut four times.
Observation The initial status quo was maintained in swards cut twice yearly.
Association Clover yielded more with infected rye-grass for most of the year.
Association Clover yield with infected rye-grass was lower in spring.

1970s 3

Show all 3 →

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Spraying with 2,4-D for control of Rumex obtusifolius did not decrease grass yield.

Taxon: Lolium perenneLolium perennet0
Treatment: 2,4‐De2
Interactor: R. obtusifoliusRumex obtusifoliuse2weed
Outcome: grass yielde2
Direction: did not decreasee2

Not reportedComparator

Verbatim

t0
“growth of Lolium perenne in the glasshouse”
✓ located verbatim in the source · title, characters 72–114

e2
“Spraying with 2,4‐D (0·84 kg acid equivalent/ha) for control of R. obtusifolius did not decrease grass yield”
✓ located verbatim in the source · abstract, characters 532–640

Title

Effects of Poa trivialis, Stellaria media and Rumex obtusifolius on the growth of Lolium perenne in the glasshouse

D. I. GIBSON; A. D. COURTNEY Annals of Applied Biology 1977. doi:10.1111/j.1744-7348.1977.tb01819.x

Other claims from this paper (5)

Mechanismauthor interpretationoriginal resultnegativemeasured

Claim · model-written summary

The reduction in seed yield from natural lodging was due to fewer seeds per unit area.

Taxon: perennial ryegrassLolium perennee0
Outcome: seed yielde1
Qualifier: a decrease in the number of seeds per unit areae1

Verbatim

e0
“The effects of lodging on the seed yield of S. 23 and S. 24 perennial ryegrass were investigated in a series of field experiments from 1973 to 1976”
✓ located verbatim in the source · abstract, characters 8–155

e1
“Natural lodging severely reduced seed yield in all years as a result of a decrease in the number of seeds per unit area”
✓ located verbatim in the source · abstract, characters 157–276

Title

Lodging studies inLolium perennegrown for seed: 1. Seed yield and seed yield components

P. D. Hebblethwaite; A. Burbidge; D. Wright The Journal of Agricultural Science 1978. doi:10.1017/s0021859600055337

Other claims from this paper (4)

Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

Natural lodging severely reduced seed yield of perennial ryegrass in all years.

Taxon: perennial ryegrassLolium perennee0
Treatment: Natural lodginge1
Outcome: seed yielde1
Direction: reducede1
Qualifier: severelye1
Setting: field experimentse0

Verbatim

e0
“The effects of lodging on the seed yield of S. 23 and S. 24 perennial ryegrass were investigated in a series of field experiments from 1973 to 1976”
✓ located verbatim in the source · abstract, characters 8–155

e1
“Natural lodging severely reduced seed yield in all years as a result of a decrease in the number of seeds per unit area”
✓ located verbatim in the source · abstract, characters 157–276

Title

Lodging studies inLolium perennegrown for seed: 1. Seed yield and seed yield components

P. D. Hebblethwaite; A. Burbidge; D. Wright The Journal of Agricultural Science 1978. doi:10.1017/s0021859600055337

Other claims from this paper (4)

1980s 2

Show all 2 →

Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

Yield decline in perennial ryegrass cultivars during hot dry summers correlated with bacterial wilt susceptibility.

Taxon: perennial ryegrassLolium perennee0
Material: cultivarse0
Interactor: Xanthomonas graminisXanthomonas graminist0pathogen
Outcome: yield decreasee0
Direction: decreasee0

Verbatim

e0
“A good correlation was established between the yield decrease of perennial ryegrass cultivars during hot, dry summers, and their susceptibility to bacterial wilt as determined in inoculation tests in the greenhouse and by field observations.”
✓ located verbatim in the source · abstract, characters 87–328

t0
“Xanthomonas graminis”
✓ located verbatim in the source · title, characters 30–50

Title

Resistance to Bacterial Wilt (Xanthomonas graminis) Increases Yield and Persistency of Lolium multiflorum¹

D. SCHMIDT; B. NUESCH EPPO Bulletin 1980. doi:10.1111/j.1365-2338.1980.tb02707.x

Other claims from this paper (5)

Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

The ryegrasses declined faster in response than S. 23 at higher nitrogen rates.

Taxon: perennial ryegrassLolium perennee1
Material: S. 24 and Barvestrae1
Treatment: higher ratese0
Outcome: responsee0
Direction: more rapid decreasee0

Not reportedComparator

Verbatim

e0
“a more rapid decrease in response at higher rates”
✓ located verbatim in the source · abstract, characters 543–592

e1
“S. 24 and Barvestra perennial ryegrass”
✓ located verbatim in the source · abstract, characters 148–186

Title

A comparison of the yield responses of four grasses to a wide range of nitrogen application rates

D. Reid The Journal of Agricultural Science 1985. doi:10.1017/s0021859600056434

Other claims from this paper (9)

Observation The two perennial ryegrasses had similar dry matter yield curves.
Intervention effect The ryegrasses responded less than S. 23 below 300 kg/ha nitrogen.
Intervention effect Cocksfoot had a similar dry matter yield response to ryegrasses at low nitrogen rates.
Intervention effect Cocksfoot response declined faster above 250 kg/ha nitrogen.
Intervention effect Meadow fescue response declined still faster above 200 kg/ha nitrogen.
Observation Optimal nitrogen rate was 380 kg N/ha for S. 24.
Observation Optimal nitrogen rate was 372 kg N/ha for Barvestra.
Observation Optimal nitrogen rate was 357 kg N/ha for S. 37.
Observation Optimal nitrogen rate was 327 kg N/ha for S. 53.

2020s 2

Show all 2 →

Method / resourceauthor interpretationoriginal resultmeasured

Claim · model-written summary

Using uncorrelated SNPs may reduce dataset dimensions.

Taxon: perennial ryegrassLolium perennet0
Outcome: data set dimensionse0
Direction: decreasee0

Not reportedComparator

Verbatim

t0
“perennial ryegrass”
✓ located verbatim in the source · title, characters 47–65

e0
“allowing for a potential decrease of the data set dimensions”
✓ located verbatim in the source · abstract, characters 816–876

Title

Genomic prediction of seasonal forage yield in perennial ryegrass

Agnieszka Konkolewska; Steffie Phang; Patrick Conaghan; et al. Grassland Research 2023. doi:10.1002/glr2.12058

Other claims from this paper (8)

Method / resource Model selection had limited effect on predictive ability with the full dataset.
Method / resource The baseline model reached 0.78 highest mean predictive accuracy for spring grazing.
Method / resource The baseline model reached 0.62 mean predictive accuracy for summer grazing.
Method / resource The baseline model reached 0.56 mean predictive accuracy for second cut silage.
Method / resource Using uncorrelated SNPs had no impact on predictive ability.
Observation GWAS found one significant SNP marker for spring grazing in a gene region linked to xyloglucan fucosylation.
Method / resource The study presented Gene Ontology enrichment as a way to increase model interpretability.
Recommendation The authors conclude feature selection approaches will aid low cost genotyping for routine genomic selection.

Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Tr05 reduced butyric acid content versus C.

Taxon: Lolium perenneLolium perennet0
Treatment: Tr05e0
Outcome: butyric acid contente0
Direction: decreaseinferrede0
Value: 0.38 g kg −1 DMe0
Qualifier: 1.35 g kg −1 DMe0
Comparator: the Ce0

Verbatim

e0
“butyric acid content in Tr05 (from 1.35 g kg −1 DM in the C to 0.38 g kg −1 DM)”
✓ located verbatim in the source · abstract, characters 1116–1195

t0
“Lolium perenne”
✓ located verbatim in the source · title, characters 115–129

Title

Biostimulating effect of l‐tryptophan on the yield and chemical and microbiological quality of perennial ryegrass (Lolium perenne) herbage and silage for ruminant

Sebastian W Przemieniecki; Cezary Purwin; Jędrzej Mastalerz; et al. Journal of the Science of Food and Agriculture 2020. doi:10.1002/jsfa.10999

Other claims from this paper (10)

Intervention effect The 5 kg ha −1 dose increased herbage yield by 15% versus C.
Intervention effect The 5 kg ha −1 yield approximated the C+ yield.
Intervention effect Tr5 increased water‐soluble carbohydrate content to 165 g kg −1 DM.
Intervention effect The treatment improved fermentation with lower pH of 4.59.
Intervention effect The treatment raised fermentation acids including lactic acid to 94.7 g kg −1 DM.
Intervention effect A high l‐TRP dose reduced Clostridium loads.
Intervention effect A high l‐TRP dose reduced fungal loads.
Intervention effect A high l‐TRP dose increased Bacillus counts.
Intervention effect Tr05 reduced N‐NH 3 content versus C+.
Recommendation The authors identified 5 kg ha −1 as the most effective dose for yield and fermentation.

1950s 1

Show all 1 →

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Phosphate decreased weed yield in the second cut.

Taxon: PERENNIAL RYEGRASSLolium perennet0
Outcome: weed yielde1
Direction: decreasee0

Not reportedTreatmentComparator

Verbatim

e0
“this was offset by a large decrease in the second cut”
✓ located verbatim in the source · abstract, characters 913–966

e1
“Although the former gave a large increase in weed yield in the first cut”
✓ located verbatim in the source · abstract, characters 840–912

t0
“PERENNIAL RYEGRASS”
✓ located verbatim in the source · title, characters 81–99

Title

THE EFFECT OF WEEDS, AND THEIR CONTROL BY MCPA SPRAYING, ON THE ESTABLISHMENT OF PERENNIAL RYEGRASS AND COCKSFOOT IN THE KENYA HIGHLANDS

W. R. Birch Grass and Forage Science 1958. doi:10.1111/j.1365-2494.1958.tb00123.x

Other claims from this paper (8)

Intervention effect MCPA spraying increased grass yields twofold to threefold on weedy land.
Recommendation The optimum time to spray perennial ryegrass was at three to four leaves or 26 days after sowing.
Recommendation For cocksfoot the best spray time was tillering or about 40 days after sowing.
Intervention effect Increasing ryegrass seed rates transiently increased yields.
Intervention effect Increasing ryegrass seed rates decreased weed yields.
Intervention effect Increasing phosphate decreased weed yields.
Intervention effect Increasing nitrogen decreased weed yields.
Intervention effect Phosphate increased weed yield in the first cut.

2000s 1

Show all 1 →

Intervention effectauthor interpretationoriginal resultnegativemeasured

Claim · model-written summary

Aneuploidy had a severe negative effect on forage yield of Lolium perenne.

Taxon: Lolium perenneLolium perennet0
Treatment: Aneuploidye2
Outcome: forage yielde2
Direction: decreaseinferrede2

Not reportedComparator

Verbatim

t0
“Genetic variation in diploid and autotetraploid populations of Lolium perenne L.”
✓ located verbatim in the source · title, characters 0–80

e2
“Aneuploidy had a severe effect upon forage yield, but did not change the earliness”
✓ located verbatim in the source · abstract, characters 340–422

Title

Genetic variation in diploid and autotetraploid populations of Lolium perenne L.

ØYSTEIN SIMONSEN Hereditas 2009. doi:10.1111/j.1601-5223.1977.tb01392.x

Other claims from this paper (10)

“yield decrease”

Claim types

Direction of the findings

Over time

Claim type

Research area

Polarity

Statistics

2010s 6

1990s 5

1960s 3

1970s 3

1980s 2

2020s 2

1950s 1

2000s 1