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“yield decrease”

16,663 matches

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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)

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

One simulated defoliation did not decrease cassava root yield.

Taxon: cassavaManihot esculentae0
Treatment: A single defoliatione0
Interactor: Z. variegatusZonocerus variegatuse0pest
Outcome: root yielde0
Direction: does not decreasee0

Not reportedComparator

Verbatim

e0
“A single defoliation of cassava (to simulate Z. variegatus feeding damage) does not decrease root yield, but additional ones do.”
✓ located verbatim in the source · abstract, characters 3181–3309

Title

Control of the variegated grasshopper Zonocerus variegatus (L.) on cassava

W. W. D. Modder TSpace 1994

Other claims from this paper (10)

Observation Early instars aggregate off farm, while later instars and adults move to crops when food becomes scarce.
Mechanism Aggregated feeding by larger grasshopper instars causes cassava leaves to wilt and lose HCN quickly.
Recommendation Eradication of Chromolaena odorata probably will not control the grasshopper.
Observation Chemical control is described as only short term effective and environmentally damaging.
Intervention effect Chemical sprays against the grasshopper kill parasitoids introduced for cassava mealybug control.
Intervention effect Exposing egg pods at the soil surface produced large grasshopper population reductions.
Intervention effect Fungal spores in kerosene and peanut oil killed 70-95% of field grasshopper populations.
Intervention effect A strain isolated from the grasshopper caused 90% mortality in 7-9 days in the laboratory.
Intervention effect Grasshoppers leaving spore baited traps died within 10 days, up to 30 m away.
Intervention effect Additional defoliations decreased cassava root yield.

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Chlorsulfuron did not decrease mature grain nutrient concentrations or grain yield.

Taxon: wheatTriticum aestivumt0
Treatment: Chlorsulfuron treatmente0
Outcome: nutrient concentrations in mature grain or grain yielde0
Direction: did not decreasee0

Not reportedComparator

Verbatim

e0
“Chlorsulfuron treatment did not decrease nutrient concentrations in mature grain or grain yield”
✓ located verbatim in the source · abstract, characters 639–734

t0
“wheat”
✓ located verbatim in the source · title, characters 70–75

Title

The impact of chlorsulfuron and diclofop-methyl on nutrient uptake by wheat.

LD Osborne; AD Robson; DG Bowran Australian Journal of Agricultural Research 1993. doi:10.1071/ar9931757

Other claims from this paper (11)

Intervention effect Chlorsulfuron decreased wheat shoot and root weights and root length in glasshouse experiments.
Intervention effect Chlorsulfuron decreased phosphorus uptake, particularly with low phosphorus supply.
Intervention effect Chlorsulfuron decreased potassium uptake.
Intervention effect Nitrogen, calcium and magnesium uptake was unaffected.
Intervention effect Field chlorsulfuron reduced shoot element concentrations during early growth by up to 30%.
Observation The reduction in shoot element concentrations faded as wheat aged.
Association Kulin was more sensitive to chlorsulfuron than Reeves.
Intervention effect Diclofop-methyl had little effect on shoot nutrient concentrations.
Intervention effect Diclofop-methyl reduced zinc and copper concentrations during vegetative growth.
Intervention effect Diclofop-methyl reduced copper concentration in mature Kulin grain.
Intervention effect Herbicides reduced uptake of diffusion-moved nutrients more than mass-flow nutrients.

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 resultno effectmeasured

Claim · model-written summary

Nitrogen did not decrease legume yield.

Taxon: tropical grass-legumet0
Treatment: Nitrogen fertilizere0
Outcome: yield of legumee0
Direction: did not decreasee0

Not reportedComparator

Verbatim

e0
“Nitrogen fertilizer did not decrease the yield of legume”
✓ located verbatim in the source · abstract, characters 613–669

t0
“tropical grass-legume”
✓ located verbatim in the source · title, characters 86–107

Title

Effects of nitrogen fertilizer applied in autumn and winter on milk production from a tropical grass-legume grazed at four stocking rates

RT Cowan; TH Stobbs Australian Journal of Experimental Agriculture and Animal Husbandry 1976. doi:10.1071/ea9760829

Other claims from this paper (7)

Intervention effect Nitrogen increased pasture yield, particularly at high stocking rates.
Intervention effect Nitrogen increased milk yield, particularly at high stocking rates.
Observation Mid-autumn to spring milk gains accounted for nearly all annual gains.
Intervention effect Nitrogen reduced pasture legume content in year two.
Association Nitrogen response of nonlegumes increased with stocking rate.
Association Lower pasture dry matter availability restricted fat-corrected milk yield.
Intervention effect At equal dry matter yield, fertilized pasture gave higher fat-corrected milk yield.

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.

Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

Yield decrease was associated with total aboveground dry matter rather than harvest index.

Taxon: soybeanGlycine maxt0
Outcome: yielde0
Direction: decreasee0
Qualifier: total aboveground dry mattere0
Comparator: harvest indexe0

Verbatim

e0
“The decrease in yield was related to the total aboveground dry matter rather than to the harvest index.”
✓ located verbatim in the source · abstract, characters 591–694

t0
“soybean”
✓ located verbatim in the source · title, characters 35–42

Title

Yield and dry matter production of soybean response to late planting in southwestern Japan

Yohei Kawasaki; Ryo Yamazaki; Satoshi Nakano; et al. Plant Production Science 2024. doi:10.1080/1343943x.2023.2299646

Other claims from this paper (6)

Intervention effect August sowing did not reduce soybean harvest index versus July sowing under irrigation.
Association Lower total aboveground dry matter was associated with intercepted solar radiation rather than radiation use efficiency.
Method / resource A significant regression equation described relative soybean yield.
Association After mid-July, Sachiyutaka A1 seed yield declined 0.60% per day.
Association After mid-July, Akimaro seed yield declined 0.64% per day.
Recommendation The regression equation can indicate seed yield in fields where irrigation is possible.

Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

Root loss of 50% after 21 weeks did not affect fruit yield, whereas 40% loss within 11 weeks accompanied a 45% yield decrease.

Taxon: tomatoSolanum lycopersicumt0
Outcome: yield decreasee0
Direction: decreasee0
Value: 45%e0
Qualifier: 40% loss within 11 weeks of plantinge0
Comparator: root losse0

Verbatim

t0
“tomato”
✓ located verbatim in the source · title, characters 20–26

e0
“A 50% root loss after 21 weeks did not affect fruit yields whereas a 40% loss within 11 weeks of planting was reflected by a 45% yield decrease”
✓ located verbatim in the source · abstract, characters 2287–2430

Title

The epidemiology of tomato brown root rot

F. T. LAST; MARION H. EBBEN Annals of Applied Biology 1966. doi:10.1111/j.1744-7348.1966.tb06870.x

Other claims from this paper (19)

Observation Three brown root rot symptoms occurred on tomato roots in infested soil without nematodes.
Observation Brown lesions appeared within a week of planting in heavily infested soils.
Observation Corkiness and black dot rarely appeared until the third month after planting.
Observation Black dot incidence sometimes rose sharply toward season end.
Association Observations suggested GSF caused more damage than C. atramentarium.
Association Yield was unrelated to black dot incidence.
Association Yield was inversely proportional to brown lesion occurrence.
Association Yield was inversely proportional to corkiness occurrence.
Association The yield relation with brown lesions was significant within eight weeks of planting.
Observation Early brown lesions mostly yielded GSF cultures, whereas later lesions more often yielded C. atramentarium.
Intervention effect Most GSF cultures produced 10 mm brown lesions on tomato seedling roots within two weeks.
Intervention effect C. atramentarium inoculation produced small pink lesions.
Intervention effect Pyrenochaeta inoculation produced no lesions.
Intervention effect GSF caused greater root damage, including root loss, in soil tests.
Association GSF root damage was reflected in decreased aerial growth.
Association GSF root damage was reflected in smaller fruit yields.
Intervention effect C. atramentarium did not affect aerial growth or fruit yield in soil tests.
Intervention effect In the second year, GSF lowered six week picking yield from 1.96 kg in controls to 1.02 kg per plant.
Observation GSF damage shifted with plant age: brown lesions appeared within days, while corkiness appeared after two to three months with stem lesions and yellow leaves.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Increasing simazino rates tended to decrease wheat yield.

Taxon: WheatTriticum aestivumt0
Treatment: Increasing rates of simazinoe1
Outcome: wheat yieldse0
Direction: decreasee0

Not reportedComparator

Verbatim

e0
“it tended to decrease wheat yields”
✓ located verbatim in the source · abstract, characters 255–289

e1
“Increasing rates of simazino”
✓ located verbatim in the source · abstract, characters 180–208

t0
“Maize - Wheat Rotation”
✓ located verbatim in the source · title, characters 25–47

Title

Chemical Weed Control in Maize - Wheat Rotation in Semi Arid Tropics

SINGH H.G; SAROHA M.S; SHAKTAWAT M.S Madras Agricultural Journal 1977. doi:10.29321/maj.10.a03155

Other claims from this paper (7)

Recommendation At most 100 per cent replenishment of nitrogen removed by weeds was needed to reduce competition.
Intervention effect Increasing simazino rates significantly increased maize yield.
Recommendation Half a kilogram of pre-emergence simazine was judged the best option without harmful wheat residual effects.
Recommendation Pre- and post-emergence 2,4-D at 0.5 kg/ha with full weed nitrogen replenishment was the most beneficial treatment.
Intervention effect Simazine at half a kg/ha increased maize yield by 4.2 g/ha.
Intervention effect Simazine at half a kg/ha reduced weed dry matter production by 13.2 g/ha.
Intervention effect Simazine at half a kg/ha had no harmful effect on wheat.

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“yield decrease”

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