Search claims · PlantClaims

Mechanismauthor interpretationoriginal resultnegativemeasured

Claim · model-written summary

The decrease in growth ultimately caused a decrease in wheat yield.

Taxon: WheatTriticum aestivumt0
Outcome: yielde5
Qualifier: This decrease in growthe5

Verbatim

t0
“Wheat Germplasm”
✓ located verbatim in the source · title, characters 14–29

e5
“This decrease in growth ultimately caused a decrease in yield”
✓ located verbatim in the source · abstract, characters 674–735

Title

Evaluation of Wheat Germplasm Against Salinity

Farida Begum; M Saifuzzaman; W Sultana Bangladesh Journal of Scientific and Industrial Research 1970. doi:10.3329/bjsir.v43i2.966

Other claims from this paper (4)

Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

Yield tended to decrease with later planting dates.

Treatment: later planting datese0
Outcome: yielde0
Direction: decreasee0

Not reportedTaxonSetting

Verbatim

e0
“yield tended to decrease with later planting dates”
✓ located verbatim in the source · abstract, characters 13–63

t0
“Short Staple Planting Dates”
✓ located verbatim in the source · title, characters 14–41

Title

Comparison of Short Staple Planting Dates

C. R. Farr UA Campus Repository (The University of Arizona) 1976

Other claims from this paper (6)

Association Boll size was smaller for the last two planting dates.
Observation Five-lock bolls were larger than four-lock bolls.
Association Boll numbers did not consistently decline as planting was delayed.
Association Boll size did not consistently decline as planting was delayed.
Observation The June 15 planting showed undue moisture stress.
Intervention effect Early frost killed many late bolls and reduced yield below expectation.

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.

Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

A yield decrease under soil heating occurred only with tall fescue during the summer.

Taxon: tall fescueLolium arundinaceume7
Outcome: yielde7
Direction: decreasee7
Qualifier: onlye7
Setting: during the summere7

Verbatim

e7
“A yield decrease occurred only with tall fescue during the summer”
✓ located verbatim in the source · abstract, characters 1308–1373

Title

Yield Response to Soil Warming: Agronomic Crops¹

K. A. Rykbost; L. Boersma; H. J. Mack; et al. Agronomy Journal 1975. doi:10.2134/agronj1975.00021962006700060001x

Other claims from this paper (9)

Intervention effect Soil heating increased yield of tall rescue by 19% over unheated plots.
Intervention effect Soil heating increased yield of sudangrass by about 50% over unheated plots.
Observation Yield increases from soil heating varied widely from year to year for the same crop.
Association The highest yield increases from soil heating occurred in years when yields on unheated plots were lowest.
Association Yield increases were highly significantly correlated with yields from unheated plots.
Association Soil heating appears most effective when climatic conditions and management factors are limiting.
Association Higher soil temperatures had their greatest effect on crop growth rates in early spring.
Intervention effect Heating increased the average soil temperature from 0 to 100 cm deep by about 10 C.
Intervention effect Heating increased the average temperature of the 0 to 10 cm soil layer by less than 3 C.

Associationobservedoriginal resultmeasured

Claim · model-written summary

Greater growing-season rainfall appeared to decrease yield.

Taxon: sugar beetBeta vulgaris subsp. vulgarist0
Outcome: yielde0
Direction: decreasee0
Setting: rainfall during the growing seasone0

Verbatim

e0
“increasing amounts of rainfall during the growing season appeared to decrease yield”
✓ located verbatim in the source · abstract, characters 577–660

t0
“sugar beet”
✓ located verbatim in the source · title, characters 47–57

Title

The effect of soil type and related factors on sugar beet yield

R. Webster; C. A. H. Hodge; A. P. Draycott; et al. The Journal of Agricultural Science 1977. doi:10.1017/s0021859600034973

Other claims from this paper (19)

Association Year-to-year variation explained 20% of yield variation.
Association Sugar yield increased over time by 0·042 t/ha/year.
Observation Experimental yields followed national yields but were greater.
Association Delayed sowing depressed yield by 0–02 t sugar/ ha/day.
Association Early harvest depressed yield by 0·01 t sugar/ ha/day.
Observation Scottish yields were 1·4 t/ha lower than England and Wales.
Observation No regional yield differences were evident within England and Wales.
Association Moderately drained soils yielded better than well-drained or imperfectly drained soils.
Association Well-drained and imperfectly drained soils yielded better than droughty and poorly drained soils.
Association Adjusted yields differed by 1·0 t/ha among drainage classes.
Association Topsoil texture had no consistent effect on mean yield.
Association Subsoil texture had an appreciable effect on yield, with sandy and chalk soils poor and silt and peat best.
Association Subsoil texture accounted for almost 2 t/ha difference in sugar yield.
Association Major soil groups distinguished yields.
Association Yield was highest on gleyed calcareous soils, peats and humic gleys and lowest on rendzinas and brown calcareous soils.
Association Nitrogen and potassium responses varied with topsoil and subsoil texture, unlike phosphorus response.
Intervention effect Nitrogen increased yield most on sandy soils and least on fine silts and peats.
Intervention effect Potassium increased yield most on sandy soils and least on fine silts and peats.
Recommendation The authors recommend dedicated experiments to guide selection of land for sugar beet.

Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

Beyond the protein-yield threshold, a further increase in rice protein content results in a decrease in grain yield.

Taxon: RiceOryza sativat0
Compound: protein contente0
Outcome: grain yielde0
Direction: decreasee0

Verbatim

e0
“further increase in the protein content results in a decrease in grain yield”
✓ located verbatim in the source · abstract, characters 1205–1281

t0
“Rice”
✓ located verbatim in the source · title, characters 47–51

Title

Influence of Environment on Protein Content of Rice¹

K. A. Gomez; S. K. De Datta Agronomy Journal 1975. doi:10.2134/agronj1975.00021962006700040029x

Other claims from this paper (6)

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Increasing phosphorus application lightened the yield decrease to some degree.

Taxon: riceOryza sativat0
Treatment: increasing the amount of phosphorus applicatione1
Outcome: yield decreasee1
Direction: lightenede1
Qualifier: to some degreee1

Not reportedComparator

Verbatim

t0
“Rice Yield Decrease Resulting from Continual Direct Sowing Culture”
✓ located verbatim in the source · title, characters 25–91

e1
“This yield decrease could be lightened to some degree by increasing the amount of phosphorus application”
✓ located verbatim in the source · abstract, characters 2274–2378

Title

Studies on the Causes of Rice Yield Decrease Resulting from Continual Direct Sowing Culture : II. In relation to phosphorus nutrition

Yoshimasa UEMURA; AKIRA MIYASAKA Japanese Journal of Crop Science 1973. doi:10.1626/jcs.42.116

Other claims from this paper (9)

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Captafol did not decrease potato yield.

Taxon: potatoSolanum tuberosumt0
Treatment: captafole0
Outcome: yielde0
Direction: did not decreasee0
Comparator: quintozenee0

Verbatim

e0
“The most effective chemical was captafol, which was as effective as quintozene and, unlike quintozene, did not decrease yield.”
✓ located verbatim in the source · abstract, characters 566–692