Search claims · PlantClaims

Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

At high populations, the decrease in barley grain yield was accompanied by a comparable decrease in grains per unit area.

Taxon: barleyHordeum vulgaret0
Treatment: high populationse1
Outcome: number of grains per unit areae1
Direction: decreasee1

Not reportedComparator

Verbatim

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

e1
“a decrease in grain yield at high populations was associated with a comparable decrease in the number of grains per unit area”
✓ located verbatim in the source · abstract, characters 1272–1397

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)

Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

The largest barley monoculture yield decrease occurred in years three to five.

Taxon: barleyHordeum vulgaree0
Outcome: yield decreasee0
Direction: decreasee0
Qualifier: 3rd to 5th yeare0

Verbatim

e0
“Experiments have further shown that the biggest yield decrease occurs in the 3rd to 5th year of barley monoculture.”
✓ located verbatim in the source · abstract, characters 1463–1578

Title

Danish Experiences with Cereals in Monoculture¹

A. Jensen EPPO Bulletin 1975. doi:10.1111/j.1365-2338.1975.tb02477.x

Other claims from this paper (19)

Intervention effect Cereal monoculture led to yield depletion.
Mechanism take‐all was a main factor in cereal yield loss.
Mechanism eyespot was a main factor in cereal yield loss.
Observation New barley varieties were highly resistant to the cereal cyst nematode.
Mechanism The named parasites did not explain all yield losses.
Observation Barley monoculture yield declining the first 2–4 years.
Observation Barley monoculture yield remains stable after that.
Observation Barley monoculture take‐all declines after that.
Intervention effect Adding straw to the soil had little effect on barley yield or disease.
Intervention effect burning it had little effect on barley yield or disease.
Intervention effect Postharvest soil treatments had little effect.
Observation Barley monoculture yield decrease was usually minor on fertile soils in Denmark.
Intervention effect Postharvest soil treatment had little effect on disease and yield except on heavily weed infested land.
Observation The cereal root nematode remained a threat to oat and spring wheat.
Intervention effect Monocultures of different host plants reduced nematode populations.
Intervention effect Benomyl successfully controlled eyespot in winter wheat.
Intervention effect Benomyl successfully controlled eyespot in winter rye.
Observation Field chemical control of take-all appeared infeasible despite good laboratory tests.
Observation Breeding for take-all resistance was judged difficult and of doubtful economic value.

Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

Reasons for the decrease in barley yield under permanent sowing were identified.

Taxon: barleyHordeum vulgaree5
Outcome: decrease in the yield of permanent sowing of barleye5

Verbatim

e5
“The reasons for the decrease in the yield of permanent sowing of barley have been identified”
✓ located verbatim in the source · abstract, characters 1639–1731

Title

The impact of abiotic and key environmental factors on barley yield

Dmitry Vladmirovich Mitrofanov The Agrarian Scientific Journal 2023. doi:10.28983/asj.y2023i9pp15-21

Other claims from this paper (5)

Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

Barley monoculture yield decrease was usually minor on fertile soils in Denmark.

Taxon: barleyHordeum vulgaree0
Outcome: decreasee0
Direction: decreasee0
Qualifier: fertile soilse0
Setting: Denmarke0

Verbatim

e0
“In barley, which is dominating in Denmark, the decrease on fertile soils is usually of minor importance.”
✓ located verbatim in the source · abstract, characters 1358–1462

Title

Danish Experiences with Cereals in Monoculture¹

A. Jensen EPPO Bulletin 1975. doi:10.1111/j.1365-2338.1975.tb02477.x

Other claims from this paper (19)

Intervention effect Cereal monoculture led to yield depletion.
Mechanism take‐all was a main factor in cereal yield loss.
Mechanism eyespot was a main factor in cereal yield loss.
Observation New barley varieties were highly resistant to the cereal cyst nematode.
Mechanism The named parasites did not explain all yield losses.
Observation Barley monoculture yield declining the first 2–4 years.
Observation Barley monoculture yield remains stable after that.
Observation Barley monoculture take‐all declines after that.
Intervention effect Adding straw to the soil had little effect on barley yield or disease.
Intervention effect burning it had little effect on barley yield or disease.
Intervention effect Postharvest soil treatments had little effect.
Observation The largest barley monoculture yield decrease occurred in years three to five.
Intervention effect Postharvest soil treatment had little effect on disease and yield except on heavily weed infested land.
Observation The cereal root nematode remained a threat to oat and spring wheat.
Intervention effect Monocultures of different host plants reduced nematode populations.
Intervention effect Benomyl successfully controlled eyespot in winter wheat.
Intervention effect Benomyl successfully controlled eyespot in winter rye.
Observation Field chemical control of take-all appeared infeasible despite good laboratory tests.
Observation Breeding for take-all resistance was judged difficult and of doubtful economic value.

Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

Mogilev spring barley had a climate-induced yield decrease of 22–33%.

Taxon: spring barleyHordeum vulgaree0
Treatment: climate-inducede1
Outcome: yielde1
Direction: decreasee0
Value: 22–33 %e0
Setting: Mogilev regione0

Verbatim

e0
“In Mogilev region, this decrease was lower: spring wheat – 17–30 %, spring barley – 22–33 %, oats – 35–36 %.”
✓ located verbatim in the source · abstract, characters 624–732

e1
“most of them were characterized by a climate-induced decrease in their yield”
✓ located verbatim in the source · abstract, characters 372–448

Title

INFLUENCE OF CLIMATE TRENDS ON DYNAMICS YIELD OF GRAIN CROPS IN MINSK AND MOGILEV REGIONS

V. V. Kalyada Nature Management 2022. doi:10.47612/2079-3928-2022-1-36-44

Other claims from this paper (13)

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Grain yield tended to decrease where lodging was absent and ethephon reduced kernel number or mass.

Taxon: BarleyHordeum vulgaret0
Treatment: ethephone0
Outcome: Grain yielde0
Direction: decreasee0
Qualifier: lodging was not a factore0

Not reportedComparator

Verbatim

e0
“Grain yield tended to decrease in cases where lodging was not a factor and ethephon reduced kernels per spike and/or kernel mass.”
✓ located verbatim in the source · abstract, characters 1690–1819

t0
“Barley”
✓ located verbatim in the source · title, characters 57–63

Title

Environment, Cultivar, and Ethephon Rate Interactions in Barley

E. H. Stobbe; J. Moes; R. W. Bahry; et al. Agronomy Journal 1992. doi:10.2134/agronj1992.00021962008400050006x

Other claims from this paper (12)

Intervention effect Ethephon reduced barley plant height similarly across environments, with smaller incremental reductions at higher rates.
Intervention effect At 240 g ha −1, ethephon eliminated lodging in most cases in the year when lodging occurred.
Association Environment, cultivar and ethephon treatment interacted significantly for grain yield.
Association Environment, cultivar and ethephon treatment interacted significantly for spikes per square meter.
Association Environment, cultivar and ethephon treatment interacted significantly for kernels per spike.
Intervention effect Ethephon did not consistently affect grain yield.
Intervention effect Ethephon sometimes increased spikes per square meter but more often left them unaffected.
Intervention effect Ethephon often reduced kernels per spike.
Intervention effect Kernel mass decreased with increasing ethephon rates for Argyle and Bedford.
Intervention effect Kernel mass remained stable under increasing ethephon rates for Samson.
Intervention effect Grain yield increased for Argyle and Bedford where ethephon reduced lodging and raised spike density.
Recommendation The authors recommend at most 240 g ha −1 ethephon in Manitoba only where severe lodging risk is high.

Mechanismauthor interpretationoriginal resultnegativemeasured

Claim · model-written summary

Barley yield reductions under quackgrass were mainly attributed to a decrease of spike density (author interpretation).

Taxon: barleyHordeum vulgaree2
Outcome: yield reductionse1
Qualifier: a decrease of spike densitye1

Verbatim

e1
“These yield reductions were mainly attributed to a decrease of spike density”
✓ located verbatim in the source · abstract, characters 657–733

e2
“and barley (Hordeum vulgare L. 'Cadette')”
✓ located verbatim in the source · abstract, characters 237–278

Title

Effet du chiendent sur l'orge ensemencée à différents écartements entre les rangs et doses de semis

D. Pageau; G. F. Tremblay Canadian Journal of Plant Science 1995. doi:10.4141/cjps95-106

Other claims from this paper (7)

Intervention effect In the presence of quackgrass, barley yield at 100 seeds m-2 was reduced by 41%.
Intervention effect In the presence of quackgrass, barley yield at 500 seeds m-2 was reduced by 19%.
Intervention effect Quackgrass presence reduced the specific weight, number of kernels per spike and number of spikes per plant of barley.
Intervention effect Quackgrass presence reduced the 1000-kernel weight, harvest index and grain N concentration of barley.
Recommendation Increasing seeding rate, rather than narrowing row spacing, can be used to reduce interference between quackgrass and barley (author recommendation).
Intervention effect Narrow row spacings had no effect on barley yield with or without quackgrass.
Intervention effect Seeding rates influenced barley productivity and development when quackgrass was present.

Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

Higher manganese and boron concentrations were associated with decrease in barley yield.

Taxon: BarleyHordeum vulgaree1
Treatment: manganese and boron coucentrationse0
Outcome: yielde0
Direction: decreasee0

Verbatim

e0
“A decrease in yield and an increase in spotting were found to be associated with an increase in the manganese and boron coucentrations of the solutions”
✓ located verbatim in the source · abstract, characters 336–487

e1
“Barley plants grown in standard Hoagland solutions”
✓ located verbatim in the source · abstract, characters 177–227

Title

Manganese and Boron Toxicities in Standard Culture Solutions1

D. Emerton Williams; James Vlamis Soil Science Society of America Journal 1957. doi:10.2136/sssaj1957.03615995002100020018x

Other claims from this paper (19)

Observation Recommended manganese and boron concentrations were toxic to barley.
Observation Recommended manganese and boron concentrations were slightly toxic to lettuce.
Observation Recommended manganese and boron concentrations were non-toxic to tomato plants.
Observation Barley in standard Hoagland solution developed dark brown older-leaf spots.
Association Higher manganese and boron concentrations were associated with increase in barley spotting.
Association Barley leaf manganese content correlated with toxicity symptoms.
Intervention effect Decreasing the manganese concentration repressed or prevented barley manganese spots.
Intervention effect increasing the macro-salt concentration repressed or prevented barley manganese spots.
Intervention effect adding sodium silicate repressed or prevented barley manganese spots.
Intervention effect Supplemental calcium salts reduced barley leaf manganese.
Intervention effect Supplemental magnesium salts reduced barley leaf manganese.
Intervention effect Supplemental potassium salts reduced barley leaf manganese.
Intervention effect Silicon repressed barley manganese toxicity symptoms.
Intervention effect Silicon had no effect on barley leaf manganese content.
Intervention effect Reducing the boron concentration eliminated boron spotting in barley.
Intervention effect increasing the macro-salt concentration eliminated boron spotting in barley.
Intervention effect Added silicon slightly reduced barley boron necrosis.
Observation Winter-grown barley tolerated higher manganese before toxicity symptoms than summer-grown plants.
Observation Winter-grown barley tolerated higher boron concentrations before toxicity symptoms than summer-grown plants.

Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

A 1% increase in current average dap was associated with a 28.76% decrease in barley yield per hectare.

Taxon: barleyHordeum vulgaree0
Treatment: current average dape0
Outcome: yield per hectare of barleye0
Direction: decreasee0
Value: 28.76%e0
Qualifier: every 1% risee0

Verbatim

e0
“every 1% rise in current average dap decrease the yield per hectare of barley by 28.76%”
✓ located verbatim in the source · abstract, characters 929–1016

Title

Modeling the Impact of Climate and Fertilizer on Barley Production

Birhan Ambachew Taye; Fasiledes Fetene Asfaw; Bantie Getnet Yirsaw; et al. American Journal of Biological and Environmental Statistics 2021. doi:10.11648/j.ajbes.20210702.12

Other claims from this paper (6)

Mechanismauthor interpretationoriginal resultnegativemeasured

Claim · model-written summary

The authors infer high-yielding varieties or high-yield fertilization decrease the aspartic acid pool and lysine.

Taxon: BarleyHordeum vulgaret0
Treatment: fertilization for high yieldinge0
Outcome: low lysinee0
Direction: decreasee0

Verbatim

e0
“high yielding varieties or fertilization for high yielding decrease aspartic acid pool resulting low lysine”
✓ located verbatim in the source · abstract, characters 758–865

t0
“Barley”
✓ located verbatim in the source · title, characters 58–64

Title

Varietal Difference in Amino Acid Composition of Polished Barley

Hoon Park; Cha-Bum Yang Korean Journal of Food Science and Technology 1976

Other claims from this paper (13)

Observation Lysine was the limiting amino acid.
Observation Leucine and phenylalanine were high, while threonine and tyrosine were low.
Observation Total essential amino acids were high.
Association Protein was negatively correlated with lysine, arginine and total basic amino acids at p=0.01.
Association Protein was negatively correlated with threonine, alanine and aspartic acid at p=0.05.
Association Protein was positively correlated with phenylalanine at p=0.01.
Association Protein was positively correlated with proline and cystine at p=0.05.
Association Lysine was positively correlated with arginine and aspartic acid.
Mechanism The authors interpret aspartic acid as a probable precursor of lysine.
Association Lysine content correlated positively with dye-binding capacity at p=0.01.
Association Tryptophan was positively correlated with histidine, total basic amino acids and arginine at p=0.01.
Association Lysine, tryptophan, threonine and valine covaried.
Association Aromatic, sulfur-containing, isoleucine and leucine amino acids covaried.

“yield decrease”

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