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“yield decrease”

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plus 31 earlier · 1910s–1940s

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Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Two adult aphids per head did not significantly reduce wheat yield.

Taxon: WheatTriticum aestivumt0
Treatment: two adult aphids per heade0
Interactor: Sitobion avenae (F.)Sitobion avenaet1pest
Outcome: yielde0
Direction: no significant decreasee0

Not reportedComparator

Verbatim

e0
“there was no significant decrease in yield at a density of two adult aphids per head”
✓ located verbatim in the source · abstract, characters 1083–1167

t0
“Wheat Plants”
✓ located verbatim in the source · title, characters 96–108

t1
“Sitobion avenae (F.)”
✓ located verbatim in the source · title, characters 35–55

Title

Impact of the English Grain Aphid, Sitobion avenae (F.) (Homoptera: Aphididae), on the Yield of Wheat Plants Subjected to Water Deficits

A. Fereres; C. Gutierrez; P. Del Estal; et al. Environmental Entomology 1988. doi:10.1093/ee/17.3.596

Other claims from this paper (8)

Intervention effect Water deficits appeared to reduce aphid reproductive rates, without a significant difference.
Intervention effect Water stress was the largest significant factor reducing wheat growth and yield.
Intervention effect Water stress reduced wheat leaf stomatal conductance.
Intervention effect Six adult aphids per head reduced most wheat yield components under nonstress conditions.
Observation Treatments did not differ significantly under moderate water stress.
Intervention effect Six aphids per head reduced kernel weight by up to 39.3% under severe water stress relative to noninfested plants.
Association Aphid-associated yield reduction was significantly greater under severe water stress than nonstress conditions.
Recommendation The authors suggest considering plant water status when setting the economic injury level for S. avenae in winter wheat.

Observationobservedoriginal resultmeasured

Claim · model-written summary

Grain size progressively decreased from apex to base.

Taxon: sorghumSorghumt0
Outcome: grain sizee0
Direction: decreasee0
Qualifier: from apex to basee1

Verbatim

e0
“grain size showed a progressive linear decrease”
✓ located verbatim in the source · abstract, characters 396–443

e1
“from apex to base was parabolic while grain size showed a progressive linear decrease”
✓ located verbatim in the source · abstract, characters 358–443

t0
“sorghum”
✓ located verbatim in the source · title, characters 63–70

Title

Compensation in grain yield components in a panicle of rainfed sorghum

R. I. HAMILTON; BALA SUBRAMANIAN; M. NARAYANA REDDY; et al. Annals of Applied Biology 1982. doi:10.1111/j.1744-7348.1982.tb00807.x

Other claims from this paper (5)

Observation Control panicle grain number and yield had a parabolic apex-to-base distribution.
Intervention effect Loss of up to 20% at base or random positions was fully compensated in grain yield.
Intervention effect Grain number and size increased after removal at base or random positions.
Intervention effect There was no grain number compensation at the apex.
Observation Grains in upper panicle were always larger than lower grains.

Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

Yield per plant fell more with salinity for McGregor and Noralta than STS.

Taxon: flaxLinum usitatissimume1
Material: McGregor and Noraltae0
Outcome: seed yield per plante0
Direction: decreasee0
Comparator: STSe0

Verbatim

e0
“The decrease in seed yield per plant with increasing salinity was usually greater for McGregor and Noralta than STS”
✓ located verbatim in the source · abstract, characters 840–955

e1
“flax (Linum usitatissimum)”
✓ located verbatim in the source · abstract, characters 87–113

Title

FIELD PERFORMANCE AT SALINE-AFFECTED SITES OF A SOMACLONAL VARIANT OF McGREGOR FLAX SELECTED FOR SALT TOLERANCE IN VITRO

G. G. ROWLAND; A. McHUGHEN; C. McONIE Canadian Journal of Plant Science 1989. doi:10.4141/cjps89-007

Other claims from this paper (4)

Observation McGregor seed yield exceeded STS in saline and nonsaline conditions.
Observation McGregor seed yield was less affected by salinity than STS.
Observation More STS plants survived to maturity from equal seed sowing.
Association Maturity differences did not correlate with seed yield differences.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Shading reduced yield more at high nitrogen in autumn than spring.

Taxon: cabbageBrassica oleracea var. capitatat0
Treatment: shadinge0
Outcome: cabbage-head yielde0
Direction: decreasee0
Qualifier: high nitrogen levels during the autumne0
Comparator: springe0

Verbatim

e0
“The decrease in cabbage-head yield caused by the shading was greater at high nitrogen levels during the autumn (low solar energy) season than during the spring (high solar energy) season”
✓ located verbatim in the source · abstract, characters 429–615

t0
“cabbage”
✓ located verbatim in the source · title, characters 30–37

Title

The role of macronutrients in cabbage-head formation

Tetsuo Hara; Tatsuya Kizawa; Yoji Sonoda Soil Science & Plant Nutrition 1981. doi:10.1080/00380768.1981.10431269

Other claims from this paper (6)

Intervention effect Cabbage head yield peaked at 50 ppm N under full light.
Intervention effect Increasing nitrogen supply increased plant nitrogen accumulation.
Intervention effect Decreasing light increased plant nitrogen accumulation.
Intervention effect Increasing nitrogen supply decreased carbohydrate content.
Intervention effect Decreasing light decreased carbohydrate content.
Association Head development was efficient near 2–3% outer leaf nitrogen with large carbohydrate production in full light.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Increasing salinity decreased radicle elongation.

Treatment: Increasing salinitye0
Outcome: radicle elongatione0
Direction: decreasee0

Not reportedTaxonComparator

Verbatim

e0
“Increasing salinity has no effect on final germination percentage after 5 days, but did decrease radicle elongation.”
✓ located verbatim in the source · abstract, characters 203–319

Title

Salinity Influences Cucumber Growth and Yield

R. W. Jones; L. M. Pike; L. F. Yourman Journal of the American Society for Horticultural Science 1989. doi:10.21273/jashs.114.4.547

Other claims from this paper (8)

Intervention effect Increasing salinity did not change final germination percentage after five days.
Intervention effect Increasing salinity decreased seedling shoot length and dry weight.
Intervention effect Higher salinity increased calcium and sodium in shoots.
Intervention effect Higher salinity decreased magnesium and potassium in shoots.
Intervention effect Salinity significantly decreased fruit yield in five of six cultivars.
Intervention effect Salinity had no effect on fruit quality.
Association Seedling shoot length at 9.0 dS·m−1 correlated with relative yield at 4.0 dS·m−1.
Recommendation The authors propose salinity screening based on the shoot length–yield relationship.

Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

Average crop yield decreased about 30% in the study area.

Taxon: SPRING WHEATTriticum aestivumt0
Outcome: crop yielde0
Direction: decreasee0
Value: about 30%e0

Not reportedInteractor

Verbatim

t0
“SPRING WHEAT”
✓ located verbatim in the source · title, characters 138–150

e0
“The average decrease in crop yield in the study area was about 30%, which resulted in estimated losses in total gross revenue of about $30 million.”
✓ located verbatim in the source · abstract, characters 824–971

Title

RELATIONSHIP BETWEEN INFESTATION LEVELS AND YIELD LOSS CAUSED BY WHEAT MIDGE, SITODIPLOSIS MOSELLANA (GÉHIN) (DIPTERA: CECIDOMYIIDAE), IN SPRING WHEAT IN SASKATCHEWAN

O.O. Olfert; M.K. Mukerji; J.F. Doane The Canadian Entomologist 1985. doi:10.4039/ent117593-5

Other claims from this paper (11)

Association Kernel infestation rose as wheat-midge larval number rose.
Association One larvae per kernel corresponded to 38% infestation.
Association 2 larvae per kernel corresponded to 58% infestation.
Association 3 larvae per kernel corresponded to 78% infestation.
Association 4 larvae per kernel corresponded to 96% infestation.
Association Infestation estimates at heading and harvest did not differ significantly.
Association Grain yield fell exponentially as infestation increased.
Association 30% infestation reduced spring wheat yield by 40%.
Association 60% infestation reduced spring wheat yield by 65%.
Association 90% infestation reduced spring wheat yield by 79%.
Association Infestation-associated revenue losses were estimated at about $30 million.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Chilling reduced primary photochemical quantum yield of photosystem II by 20–25%.

Taxon: Zea maysZea mayst0
Treatment: chill-treatmente0
Outcome: primary photochemical quantum yield of photosystem IIe0
Direction: decreasee0
Value: 20–25%e0

Not reportedComparator

Verbatim

e0
“The effects of this chill-treatment on the chlorophyll fluorescence induction kinetics of the leaves indicated a 20–25% decrease in the primary photochemical quantum yield of photosystem II”
✓ located verbatim in the source · abstract, characters 210–399

t0
“Zea mays”
✓ located verbatim in the source · title, characters 43–51

Title

Chilling Damage to Photosynthesis in Young Zea mays

N. R. BAKER; T. M. EAST; S. P. LONG Journal of Experimental Botany 1983. doi:10.1093/jxb/34.2.189

Other claims from this paper (3)

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Cytokinin at 4/1000 reversed the glyphosate-induced decrease in protein yield per hectare in faba bean.

Taxon: Faba BeansVicia fabat0
Treatment: cytokinin at 4/1000e7
Outcome: protein yield per he7
Direction: reversede7
Comparator: glyphosate‐induced‐phytotoxicitye7

Verbatim

t0
“Effect of Some Growth Factors and Glyphosate Herbicide on Pigments and Protein in Faba Beans (Vicia faba L.)”
✓ located verbatim in the source · title, characters 0–108

e7
“The treatments of cytokinin at 4/1000, phenylalanine at 500 ppm and tryptophan at both levels, reversed the glyphosate‐induced‐phytotoxicity on decreasing the protein yield per h”
✓ located verbatim in the source · abstract, characters 1482–1660

Title

Effect of Some Growth Factors and Glyphosate Herbicide on Pigments and Protein in Faba Beans (Vicia faba L.)

A. H. El‐Hattab; Esmat A. Hassan; Sh. A. Shaban; et al. Journal of Agronomy and Crop Science 1987. doi:10.1111/j.1439-037x.1987.tb00271.x

Other claims from this paper (16)

Intervention effect Glyphosate decreased chlorophyll a, b and carotenoid content in faba bean leaves relative to untreated plants.
Intervention effect Glyphosate decreased total pigments content in faba bean leaves relative to untreated plants.
Intervention effect Glyphosate decreased seed protein content and protein yield per hectare in faba bean.
Intervention effect Phenylalanine at 500 ppm reversed the glyphosate-induced decrease in chlorophyll a, b and total pigments in faba bean leaves.
Intervention effect Phenylalanine at 500 ppm reversed the glyphosate-induced decrease in carotenoid content in faba bean leaves.
Intervention effect Urea at 1 % reversed the glyphosate-induced decrease in chlorophyll a, b and total pigments in faba bean leaves.
Intervention effect Urea at 1 % reversed the glyphosate-induced decrease in carotenoid content in faba bean leaves.
Intervention effect Cytokinin at 4/1000 reversed the glyphosate-induced decrease in chlorophyll a, b and total pigments in faba bean leaves.
Intervention effect Cytokinin at 4/1000 reversed the glyphosate-induced decrease in carotenoid content in faba bean leaves.
Intervention effect Tryptophan at 500 ppm reversed the glyphosate-induced decrease in chlorophyll a, b and total pigments in faba bean leaves.
Intervention effect Tryptophan at 500 ppm reversed the glyphosate-induced decrease in carotenoid content in faba bean leaves.
Intervention effect Zinc sulfate at 1 % reversed the glyphosate-induced decrease in carotenoid content in faba bean leaves.
Intervention effect G a 3 at 100 ppm gave the highest crude protein percentage in faba bean seeds.
Intervention effect Cytokinin at 4/1000 gave the lowest crude protein percentage in faba bean seeds.
Intervention effect Phenylalanine at 500 ppm reversed the glyphosate-induced decrease in protein yield per hectare in faba bean.
Intervention effect Tryptophan at both levels reversed the glyphosate-induced decrease in protein yield per hectare in faba bean.

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Phenylalanine at 500 ppm reversed the glyphosate-induced decrease in protein yield per hectare in faba bean.

Taxon: Faba BeansVicia fabat0
Treatment: phenylalanine at 500 ppme7
Outcome: protein yield per he7
Direction: reversede7
Comparator: glyphosate‐induced‐phytotoxicitye7

Verbatim

t0
“Effect of Some Growth Factors and Glyphosate Herbicide on Pigments and Protein in Faba Beans (Vicia faba L.)”
✓ located verbatim in the source · title, characters 0–108

e7
“The treatments of cytokinin at 4/1000, phenylalanine at 500 ppm and tryptophan at both levels, reversed the glyphosate‐induced‐phytotoxicity on decreasing the protein yield per h”
✓ located verbatim in the source · abstract, characters 1482–1660

Title

Effect of Some Growth Factors and Glyphosate Herbicide on Pigments and Protein in Faba Beans (Vicia faba L.)

A. H. El‐Hattab; Esmat A. Hassan; Sh. A. Shaban; et al. Journal of Agronomy and Crop Science 1987. doi:10.1111/j.1439-037x.1987.tb00271.x

Other claims from this paper (16)

Intervention effect Glyphosate decreased chlorophyll a, b and carotenoid content in faba bean leaves relative to untreated plants.
Intervention effect Glyphosate decreased total pigments content in faba bean leaves relative to untreated plants.
Intervention effect Glyphosate decreased seed protein content and protein yield per hectare in faba bean.
Intervention effect Phenylalanine at 500 ppm reversed the glyphosate-induced decrease in chlorophyll a, b and total pigments in faba bean leaves.
Intervention effect Phenylalanine at 500 ppm reversed the glyphosate-induced decrease in carotenoid content in faba bean leaves.
Intervention effect Urea at 1 % reversed the glyphosate-induced decrease in chlorophyll a, b and total pigments in faba bean leaves.
Intervention effect Urea at 1 % reversed the glyphosate-induced decrease in carotenoid content in faba bean leaves.
Intervention effect Cytokinin at 4/1000 reversed the glyphosate-induced decrease in chlorophyll a, b and total pigments in faba bean leaves.
Intervention effect Cytokinin at 4/1000 reversed the glyphosate-induced decrease in carotenoid content in faba bean leaves.
Intervention effect Tryptophan at 500 ppm reversed the glyphosate-induced decrease in chlorophyll a, b and total pigments in faba bean leaves.
Intervention effect Tryptophan at 500 ppm reversed the glyphosate-induced decrease in carotenoid content in faba bean leaves.
Intervention effect Zinc sulfate at 1 % reversed the glyphosate-induced decrease in carotenoid content in faba bean leaves.
Intervention effect G a 3 at 100 ppm gave the highest crude protein percentage in faba bean seeds.
Intervention effect Cytokinin at 4/1000 gave the lowest crude protein percentage in faba bean seeds.
Intervention effect Cytokinin at 4/1000 reversed the glyphosate-induced decrease in protein yield per hectare in faba bean.
Intervention effect Tryptophan at both levels reversed the glyphosate-induced decrease in protein yield per hectare in faba bean.

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Tryptophan at both levels reversed the glyphosate-induced decrease in protein yield per hectare in faba bean.

Taxon: Faba BeansVicia fabat0
Treatment: tryptophan at both levelse7
Outcome: protein yield per he7
Direction: reversede7
Comparator: glyphosate‐induced‐phytotoxicitye7

Verbatim

t0
“Effect of Some Growth Factors and Glyphosate Herbicide on Pigments and Protein in Faba Beans (Vicia faba L.)”
✓ located verbatim in the source · title, characters 0–108

e7
“The treatments of cytokinin at 4/1000, phenylalanine at 500 ppm and tryptophan at both levels, reversed the glyphosate‐induced‐phytotoxicity on decreasing the protein yield per h”
✓ located verbatim in the source · abstract, characters 1482–1660

Title

Effect of Some Growth Factors and Glyphosate Herbicide on Pigments and Protein in Faba Beans (Vicia faba L.)

A. H. El‐Hattab; Esmat A. Hassan; Sh. A. Shaban; et al. Journal of Agronomy and Crop Science 1987. doi:10.1111/j.1439-037x.1987.tb00271.x

Other claims from this paper (16)

Intervention effect Glyphosate decreased chlorophyll a, b and carotenoid content in faba bean leaves relative to untreated plants.
Intervention effect Glyphosate decreased total pigments content in faba bean leaves relative to untreated plants.
Intervention effect Glyphosate decreased seed protein content and protein yield per hectare in faba bean.
Intervention effect Phenylalanine at 500 ppm reversed the glyphosate-induced decrease in chlorophyll a, b and total pigments in faba bean leaves.
Intervention effect Phenylalanine at 500 ppm reversed the glyphosate-induced decrease in carotenoid content in faba bean leaves.
Intervention effect Urea at 1 % reversed the glyphosate-induced decrease in chlorophyll a, b and total pigments in faba bean leaves.
Intervention effect Urea at 1 % reversed the glyphosate-induced decrease in carotenoid content in faba bean leaves.
Intervention effect Cytokinin at 4/1000 reversed the glyphosate-induced decrease in chlorophyll a, b and total pigments in faba bean leaves.
Intervention effect Cytokinin at 4/1000 reversed the glyphosate-induced decrease in carotenoid content in faba bean leaves.
Intervention effect Tryptophan at 500 ppm reversed the glyphosate-induced decrease in chlorophyll a, b and total pigments in faba bean leaves.
Intervention effect Tryptophan at 500 ppm reversed the glyphosate-induced decrease in carotenoid content in faba bean leaves.
Intervention effect Zinc sulfate at 1 % reversed the glyphosate-induced decrease in carotenoid content in faba bean leaves.
Intervention effect G a 3 at 100 ppm gave the highest crude protein percentage in faba bean seeds.
Intervention effect Cytokinin at 4/1000 gave the lowest crude protein percentage in faba bean seeds.
Intervention effect Cytokinin at 4/1000 reversed the glyphosate-induced decrease in protein yield per hectare in faba bean.
Intervention effect Phenylalanine at 500 ppm reversed the glyphosate-induced decrease in protein yield per hectare in faba bean.

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“yield decrease”

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