Search claims · PlantClaims

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

AFI14 tended to decrease grain yield versus EFI.

Taxon: cornZea mays subsp. mayst0
Treatment: AFI14e0
Outcome: grain yieldt1
Direction: decreasee0
Comparator: EFIe0

Verbatim

e0
“it tended to decrease under AFI14 as compared with EFI”
✓ located verbatim in the source · abstract, characters 648–702

t0
“corn”
✓ located verbatim in the source · title, characters 129–133

t1
“Results indicated that grain yield increased under the AFI7 treatment”
✓ located verbatim in the source · abstract, characters 569–638

Title

Impact of alternate furrow irrigation with different irrigation intervals on yield, water use efficiency, and economic return of corn

Awad Abd El-Halim Chilean journal of agricultural research 2013. doi:10.4067/s0718-58392013000200014

Other claims from this paper (7)

Intervention effect AFI7 increased grain yield versus EFI.
Intervention effect AFI7 saved approximately 7% irrigation water versus EFI.
Intervention effect AFI14 saved approximately 17% irrigation water versus EFI.
Intervention effect AFI7 improved crop water use efficiency and irrigation water productivity versus EFI.
Intervention effect AFI14 improved crop water use efficiency and irrigation water productivity versus EFI.
Intervention effect AFI7 increased benefit-cost ratio and net return.
Recommendation Authors recommend AFI7 when low cost water is available without extra delivery expense.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Yield started to decrease considerably in later years without fertilization.

Taxon: winter wheat and summer maizeTriticum aestivum Zea mayse0
Treatment: without fertilizatione2
Outcome: yielde2
Direction: decrease considerablye2

Not reportedComparator

Verbatim

e0
“comprising winter wheat and summer maize as an annual rotation”
✓ located verbatim in the source · abstract, characters 479–541

e2
“The yield did not decrease in the first year without fertilization but started to decrease considerably in later years”
✓ located verbatim in the source · abstract, characters 1046–1164

Title

Long-term legacy impacts of nitrogen fertilization on crop yield, nitrate accumulation, and nitrogen recovery efficiency

Shuang Lei; Sajjad Raza; Annie Irshad; et al. European Journal of Agronomy 2025. doi:10.1016/j.eja.2025.127513

Other claims from this paper (11)

Intervention effect N fertilization increased grain yield compared with the control.
Intervention effect DCD addition caused additional increases in grain yield, mainly at 500 kg N ha-1.
Intervention effect Yield did not decrease in the first year without fertilization.
Intervention effect N fertilization increased grain N uptake by more than 100 % compared with the control in fertilized years and the first unfertilized year.
Intervention effect Grain N uptake decreased strongly in the second year without fertilization.
Intervention effect Cumulative fertilizer N recovery did not differ among N fertilized treatments during fertilized years.
Intervention effect Cumulative fertilizer N recovery increased strongly when N uptake in unfertilized years was incorporated.
Intervention effect Cumulative fertilizer N recovery in N340 + DCD increased from 37 %–44 % in fertilized years to 74 %–80 % in unfertilized years.
Observation A residual nitrate accumulation of 237–489 kg N ha-1 accumulated in the soil profile after two years of fertilization.
Intervention effect Residual N accumulation decreased by 31 %–41 % in the first unfertilized year.
Observation Soil N accumulation became less than 60 kg ha-1 after four years of cropping without fertilization, with no difference among treatments including control.

Intervention effectobservedoriginal resultnegativesimulated

Claim · model-written summary

For winter wheat, a gradual increase in air temperature resulted in a simulated yield decrease.

Taxon: winter wheatTriticum aestivume0
Treatment: gradual increase in air temperaturee0
Outcome: yielde0
Direction: decreasee0

Not reportedComparator

Verbatim

e0
“For winter wheat, a gradual increase in air temperature resulted in a yield decrease”
✓ located verbatim in the source · abstract, characters 751–835

Title

Potential impact of climate change on selected agricultural crops in north‐eastern Austria

Vesselin Alexandrov; Josef Eitzinger; Vesna Cajic; et al. Global Change Biology 2002. doi:10.1046/j.1354-1013.2002.00484.x

Other claims from this paper (9)

Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

An 80% decrease in soybean yield was associated with the 0.4P salinity peak treatment.

Taxon: SoybeanGlycine maxe0
Treatment: 0.4Pe4
Outcome: yielde4
Direction: decreasee4
Value: 80%e4

Verbatim

e0
“Soybean responded differently to stable salinity levels versus peaks of salinity”
✓ located verbatim in the source · abstract, characters 962–1042

e4
“an 80% decrease in yield was associated with the 0.4P treatment”
✓ located verbatim in the source · abstract, characters 1407–1470

Title

Soybean growth under stable versus peak salinity

Carolina Bustingorri; Raúl Silvio Lavado Scientia Agricola 2011. doi:10.1590/s0103-90162011000100015

Other claims from this paper (4)

Intervention effect Permanent salinity greatly reduced biomass production and differentiation of reproductive organs in soybean, regardless of salinity level.
Intervention effect Soybean at 0.8S never reached the reproductive phase.
Intervention effect Soybean at 0.4P showed only small differences in growth data from the control.
Recommendation A leaf chloride concentration of 1 mg g-1 of Cl- in dry matter should be considered a maximum threshold for soybean yield.

Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

Cold-induced bolting was associated with a 10%-20% yield decrease.

Taxon: sugar beetBeta vulgaris subsp. vulgarise0
Treatment: Cold temperaturee0
Outcome: yielde0
Direction: decreasee0
Value: 10%-20%e0

Verbatim

e0
“Cold temperature that would induce a biannual sugar beet to bolting,which would lead the yield to decrease 10%-20%”
✓ located verbatim in the source · abstract, characters 0–114

Title

Differential expression analysis of bolting genes in the cold induced sugar beet

Fengming Ma Dongbei Nongye Daxue xuebao 2009

Other claims from this paper (2)

Observation Cold-induced bolting was associated with a 0.8%-1.6% reduction in sugar ratio.
Method / resource A cDNA fragment DP3 was obtained from shoot tips of cold-induced sugar beet.

Mechanismobservedoriginal resultnegativemeasured

Claim · model-written summary

The yield decrease lowered total grain protein production per crop.

Taxon: RiceOryza sativat0
Outcome: total grain protein production per crope0
Direction: lowerse0
Qualifier: decrease in grain yielde0

Verbatim

e0
“This decrease in grain yield consequently lowers the total grain protein production per crop.”
✓ located verbatim in the source · abstract, characters 217–310

t0
“Rice”
✓ located verbatim in the source · title, characters 41–45

Title

Effect of Simazine on Protein Content of Rice Grain (Oryza sativa L.)

B. S. Vergara; M. Miller; E. Avelino Agronomy Journal 1970. doi:10.2134/agronj1970.00021962006200020028x

Other claims from this paper (6)

Intervention effect Simazine applied at flowering increased grain protein percentage.
Intervention effect Simazine applied at flowering decreased grain yield.
Mechanism Increased sterility was attributed as the cause of reduced grain yield.
Intervention effect Simazine increased nitrogen content of blades, sheaths plus culms, and roots in young rice plants.
Mechanism The nitrogen percentage increase did not result from increased plant nitrogen uptake.
Mechanism Reduced dry weight accounted for increased nitrogen percentage.

Observationobservedoriginal resultnegativeprojected

Claim · model-written summary

Climate change was projected to greatly decrease untreated winter oilseed rape yield in southern England.

Taxon: winter oilseed rapeBrassica napuse0
Treatment: untreatede0
Outcome: yielde0
Direction: greatly decreasee0
Setting: southern Englande1

Verbatim

e0
“greatly decrease yield of untreated winter oilseed rape”
✓ located verbatim in the source · abstract, characters 967–1022

e1
“southern England the combination”
✓ located verbatim in the source · abstract, characters 746–778

Title

North–South divide: contrasting impacts of climate change on crop yields in Scotland and England

Michael H. Butterworth; Mikhail A. Semenov; Andrew Barnes; et al. Journal of The Royal Society Interface 2009. doi:10.1098/rsif.2009.0111

Other claims from this paper (3)

Associationauthor interpretationoriginal resultnegativemeasured

Claim · model-written summary

Many weed species in rice fields decrease rice yield and quality.

Taxon: riceOryza sativae0
Interactor: weed speciese0weed
Outcome: yield and the quality of ricee0
Direction: decreasee0

Verbatim

e0
“Many weed species exist in the fields of rice which decrease the yield and the quality of rice.”
✓ located verbatim in the source · abstract, characters 244–339

Title

Weed species found in rice fields in the Republic of Macedonia

Karov, Ilija; Mitrev, Sasa; Kovacevik, Biljana; et al. Goce Delchev University Repository (Goce Delčev University of Štip) 2010

Other claims from this paper (4)

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Further raising CO2 from 2600 to 10000 micromoles mol-1 produced a smaller further decrease in those yield traits.

Taxon: wheatTriticum aestivumt0
Treatment: 10000 micromoles mol-1e0
Outcome: decreasee0
Direction: decreasee0
Comparator: 2600e0

Verbatim

e0
“Further elevation of [CO2] from 2600 to 10000 micromoles mol-1 caused a further but smaller decrease”
✓ located verbatim in the source · abstract, characters 1079–1179

t0
“Wheat”
✓ located verbatim in the source · title, characters 67–72

Title

Very High CO2Reduces Photosynthesis, Dark Respiration and Yield in Wheat

J REUVENI Annals of Botany 1997. doi:10.1006/anbo.1997.0489

Other claims from this paper (16)

Intervention effect Raising CO2 from 350 to 1000 micromoles mol-1 increased wheat seed yield by 33%.
Intervention effect Raising CO2 from 350 to 1000 micromoles mol-1 increased vegetative biomass by 25%.
Intervention effect Raising CO2 from 350 to 1000 micromoles mol-1 increased heads per square meter by 34%.
Intervention effect Increasing CO2 from 1000 to 10000 micromoles mol-1 decreased seed yield by 37%.
Intervention effect Increasing CO2 from 1000 to 10000 micromoles mol-1 decreased harvest index by 14%.
Intervention effect Increasing CO2 from 1000 to 10000 micromoles mol-1 decreased mass per seed by 9%.
Intervention effect Increasing CO2 from 1000 to 10000 micromoles mol-1 decreased seeds per head by 29%.
Intervention effect Very high CO2 had negligible, nonsignificant effects on vegetative biomass, heads per square meter, and seed mass per head.
Intervention effect Seed yield, harvest index and seeds per head sharply decreased between 1000 and 2600 micromoles mol-1 CO2.
Observation The two wheat cultivars responded similarly to CO2 across growth parameters.
Observation Wheat grown in the two cultivation environments did not differ in response to high CO2.
Association High CO2 was not correlated with ethylene production by wheat flag leaves or heads.
Intervention effect Whole-plant photosynthetic rate was 8% lower at 2600 micromoles mol-1 CO2 than at ambient CO2.
Intervention effect Wheat head dark respiration was 25% lower at 2600 micromoles mol-1 CO2 than at ambient CO2.
Mechanism The authors attribute reduced seed set mainly to reduced dark respiration in wheat heads.
Mechanism The authors conclude that ethylene does not mediate reduced wheat seed set.

Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

A 50% grain yield decrease occurred at about 72 mM NaCl with 0.2 x HS.

Taxon: wheatTriticum aestivumt0
Outcome: grain yield decreasee0
Direction: decreasee0
Value: 72e0

Verbatim

e0
“The salinity level associated with a 50% grain yield decrease was about 84, 72, and 31 mM NaCl for 1,0.2, and 0.04 × HS, respectively.”
✓ located verbatim in the source · abstract, characters 1065–1199

t0
“wheat”
✓ located verbatim in the source · title, characters 59–64

Title

Interactive effects of salinity and macronutrient level on wheat. I. Growth

Y. Hu; J. J. Oertli; U. Schmidhalter Journal of Plant Nutrition 1997. doi:10.1080/01904169709365324

Other claims from this paper (16)

Intervention effect Main spike grain yield decreased slightly at 1 x HS under low to medium salinity.
Intervention effect Main spike grain yield decreased slightly at 0.2 x HS under low to medium salinity.
Intervention effect Main stem grain yield decreased more at 0.04 x HS.
Intervention effect High salinity caused larger decreases in main stem grain yield.
Observation High-salinity yield loss was more marked at 0.2 than 1 x HS.
Intervention effect Increasing salinity strongly decreased plant yield components other than thousand grain weight.
Observation A 50% grain yield decrease occurred at about 84 mM NaCl with 1 x HS.
Observation A 50% grain yield decrease occurred at about 31 mM NaCl with 0.04 x HS.
Observation Salt tolerance was higher at full macronutrient concentration.
Association Grain yield declines were closely related to declining leaf number.
Association Grain yield declines were closely related to declining tiller number.
Mechanism The authors infer salinity mainly affects early growth stages.
Recommendation The authors recommend increasing nutrient supply in nutrient-poor saline soils.
Recommendation The authors recommend salt elimination around roots during early wheat development.
Recommendation The authors recommend increasing main stem density by seeding more densely.
Recommendation Early salt elimination and increased seeding density were expected to raise yield more than added nutrients at moderate and sufficient nutrient levels.

“yield decrease”

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