Search claims · PlantClaims

Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

Branch pod compensation limited per plant seed yield decrease to 52%.

Outcome: per-plant seed yield decreasee0
Direction: decreasee0
Value: 52%e0

Not reportedTaxon

Verbatim

e0
“partial compensation by pods on the branches reduced mean per-plant seed yield decrease to 52%”
✓ located verbatim in the source · abstract, characters 999–1093

Title

Response of three Brassica species to high temperature stress during reproductive growth

S. V. Angadi; H. W. Cutforth; P. R. Miller; et al. Canadian Journal of Plant Science 2000. doi:10.4141/p99-152

Other claims from this paper (12)

Observation B. juncea and B. rapa had higher optimum temperatures than B. napus.
Intervention effect Moderate temperature stress left dry matter unaffected.
Intervention effect High temperature stress reduced dry matter.
Intervention effect The 35/15 °C treatment injured reproductive organs in all three species.
Intervention effect Heat at flowering affected yield more than heat at pod development.
Intervention effect Heat stress reduced main stem seed yield by a mean 89%.
Intervention effect Heat stress reduced fertile pods, thousand seed weight and seeds per pod.
Observation B. rapa was more heat sensitive than B. napus and B. juncea.
Observation Pods beyond a critical developmental threshold tolerated heat stress.
Observation Genotypes resumed flowering after recovery at 20/15 °C.
Observation B. napus showed the weakest recovery from severe flowering stress and formed abnormal pods.
Observation J90-4316 and Cutlass showed similar per plant yield responses.

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.

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

When soil water potential continued to decrease, no longer obvious decrease in yield was observed.

Taxon: RiceOryza sativat0
Treatment: SWP continued to be decreasede6
Outcome: yielde2
Direction: no longer obvious decreasee6

Not reportedComparator

Verbatim

t0
“Yield and Quality of Rice”
✓ located verbatim in the source · title, characters 27–52

e2
“the yield of two cultivars was decreased significantly before heading stages,especially at panicle formation stage by lower SWP”
✓ located verbatim in the source · abstract, characters 431–558

e6
“but no longer obvious decrease was observed when SWP continued to be decreased”
✓ located verbatim in the source · abstract, characters 559–637

Title

Effect of Soil Moisture on Yield and Quality of Rice

Zheng Gui 2006

Other claims from this paper (7)

Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

The yield decrease of wheat increased with subsoil Al.

Taxon: wheatTriticum aestivume0
Treatment: subsoil Ale3
Outcome: yield decreasee3
Direction: increasede3

Verbatim

e0
“toxicity on wheat growth were studied”
✓ located verbatim in the source · abstract, characters 112–149

e3
“the yield decrease increased with subsoil Al”
✓ located verbatim in the source · abstract, characters 935–979

Title

Interacting effects of topsoil water and nitrogen supply on subsoil aluminium toxicity

S. J. Can; G. S. P. Ritchie Communications in Soil Science and Plant Analysis 1994. doi:10.1080/00103629409369268

Other claims from this paper (5)

Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Maize yield did not decrease with increasing plant diversity.

Taxon: MaizeZea mayse0
Treatment: increasing plant diversitye0
Outcome: yielde0
Direction: did not decreasee0

Not reportedComparator

Verbatim

e0
“Maize yield did not decrease with increasing plant diversity.”
✓ located verbatim in the source · abstract, characters 860–921

Title

Benefits of a maize–bean–weeds mixed cropping system in Urubamba Valley, Peruvian Andes

Ernesto Gianoli; Isaías Ramos; Armando Alfaro-Tapia; et al. International Journal of Pest Management 2006. doi:10.1080/09670870600796722

Other claims from this paper (7)

Observation The main recorded maize pests were Diabrotica spp., Carpophilus sp. and Pagiocerus frontalis.
Intervention effect Overall pest abundance did not differ among crop diversity treatments.
Intervention effect Crop diversity significantly reduced maximum Carpophilus abundance.
Intervention effect Crop diversity significantly reduced maximum Pagiocerus abundance.
Observation The main beneficial arthropods were Paratriphleps sp., ladybirds and spiders.
Intervention effect Beneficial arthropod density did not differ among treatments.
Recommendation The authors recommend traditional intercropping as a valuable alternative to pesticides for resource-poor Andean farmers.

Observationobservedoriginal resultno effectmeasured

Claim · model-written summary

The 4M:6S ratio did not decrease subsequent wheat yield.

Taxon: wheatTriticum aestivume0
Outcome: yielde0
Direction: did not decreasee0

Verbatim

e0
“but it did not decrease yield of wheat.”
✓ located verbatim in the source · abstract, characters 1740–1779

Title

Row Ratios of Intercropping Maize and Soybean Can Affect Agronomic Efficiency of the System and Subsequent Wheat

Yitao Zhang; Jian Liu; Jizong Zhang; et al. PLoS ONE 2015. doi:10.1371/journal.pone.0129245

Other claims from this paper (14)

Observation Maize–soybean intercropping was the optimal summer cropping system.
Intervention effect Maize–soybean intercropping improved yield, economy and land utilization relative to maize monoculture.
Intervention effect Maize–soybean intercropping reduced soil nitrate accumulation relative to maize monoculture.
Observation Maize–soybean intercropping improved the residual effect on subsequent wheat.
Observation Intercropping reduced nitrogen fertilizer use per unit area.
Observation Intercropping increased relative maize biomass.
Observation Border-row photosynthetic efficiency and nitrogen utilization were promoted during intercropping.
Observation Intercropping advantage emerged at tasseling after maize nitrogen topdressing.
Intervention effect The 4M:6S row ratio had the largest land equivalent ratio of 1.30.
Intervention effect The 4M:6S row ratio had the greatest crop nitrogen accumulation of 258 kg ha(-1).
Intervention effect The 4M:6S row ratio had the greatest economic benefit of 3,408 USD ha(-1).
Intervention effect The 4M:6S ratio lowered soil nitrate after maize harvest compared with maize monoculture.
Intervention effect The 4M:6S ratio lowered soil nitrate after subsequent wheat harvest compared with maize monoculture.
Recommendation The authors recommended alternating four maize rows with six soybean rows as the optimum ratio, subject to further multiyear confirmation.

Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Liaoyan 16 yield components did not decrease markedly under weedy rice interference.

Taxon: Liaoyan 16e0
Outcome: yield componentse0
Direction: no decrease markerlye0

Verbatim

e0
“However,the yield components of Liaoyan 16 was no decrease markerly.”
✓ located verbatim in the source · abstract, characters 630–698

Title

Ecological Control of Weedy Rice by Different Morphological Type Rice

Wenfu Chen Acta Agriculturae Boreali-Sinica 2010

Other claims from this paper (4)

Intervention effect Liaoyan 16 reduced weedy rice height, leaf area, dry weight, and tiller number relative to Shennong 265.
Intervention effect At 12 weedy rice plants per square meter, Shennong 265 panicle number, leaf area index and dry matter weight decreased seriously.
Intervention effect Weedy rice interference caused a decline in rice yield.
Observation Liaoyan 16 competed more strongly than Shennong 265.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Greater shade tended to decrease grain yield.

Taxon: upland riceOryza sativat0
Treatment: shade levelse0
Outcome: grain yielde0
Direction: decreasee0

Not reportedComparator

Verbatim

e0
“The shade levels tend to decrease grain yield and increase unfilled grain.”
✓ located verbatim in the source · abstract, characters 667–741

t0
“upland rice”
✓ located verbatim in the source · title, characters 50–61

Title

Grain yield and yield attributes response of four upland rice (Oryza sativa L.) promising lines to shade stress

G R Sadimantara; E Febrianti; N W S Suliartini; et al. IOP Conference Series Earth and Environmental Science 2020. doi:10.1088/1755-1315/454/1/012188

Other claims from this paper (3)

Observation Shade levels affected grain yield and yield attributes.
Intervention effect Greater shade tended to increase unfilled grain.
Observation GS12-1 was a better line for panicle length and grain yield.

Associationobservedoriginal resultnot significant (as stated)measured

Claim · model-written summary

The maize yield decrease from delayed emergence was not statistically related to yield stability zones.

Taxon: maizeZea mayse0
Outcome: maize yielde0
Direction: decreasee0
Setting: yield stability zonese0

Not reportedTreatmentComparator

Verbatim

e0
“The decrease in maize yield caused by the delay in emergence was not statistically related to yield stability zones”
✓ located verbatim in the source · abstract, characters 2129–2244

Title

Plant emergence and maize (Zea mays L.) yield across multiple farmers’ fields

S. Albarenque; B. Basso; O. Davidson; et al. Field Crops Research 2023. doi:10.1016/j.fcr.2023.109090

Other claims from this paper (7)

Observation Individual maize emergence occurred 3 to 31 days after planting.
Association Emergence timing variation affected yield and yield components more than within-row spacing variation.
Association The impact of emergence variation was generally larger in stable low-yield areas.
Association Plant yield fell by 7% per day of emergence delay.
Association Grain number fell by 6% per day of emergence delay.
Association Final crop yield fell by 8.5% per day of emergence delay.
Association Delayed emergence tended to have a more negative impact in low yield stability zones.

“yield decrease”

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