Search claims · PlantClaims

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

A 58% population decrease caused only a 12% soybean yield decrease.

Taxon: SoybeanGlycine maxe1
Treatment: 58% population decreasee0
Outcome: yielde0
Direction: decreasee0
Value: 12%e0
Comparator: 164 000 plants ha −le0

Verbatim

e0
“A 58% population decrease from 164 000 plants ha −l resulted in a yield decrease of only 12%”
✓ located verbatim in the source · abstract, characters 880–972

e1
“Soybean [ Glycine max (L.) Merr.]”
✓ located verbatim in the source · abstract, characters 0–33

Title

Branch Yield Components Controlling Soybean Yield Stability across Plant Populations

A. C. Carpenter; J. E. Board Crop Science 1997. doi:10.2135/cropsci1997.0011183x003700030031x

Other claims from this paper (8)

Intervention effect A 43% population increase produced no significant soybean yield change.
Observation Branch dry matter averaged 14.0 g per plant at low population.
Observation Branch dry matter averaged 5.3 g per plant at medium population.
Observation Branch dry matter averaged 3.6 g per plant at high population.
Association Greater branch dry matter yielded more branch nodes, reproductive nodes and pods.
Association Pods per reproductive branch node affected yield in some cases.
Association Branch dry matter correlated strongly with yield at r squared 0.95.
Method / resource Branch dry matter was useful for identifying cultivars with low optimal population.

Intervention effectobservedoriginal resultnegativenot significant (as stated)measured

Claim · model-written summary

One cluster had a nonsignificant yield decrease with narrower rows.

Taxon: SoybeanGlycine maxt0
Treatment: RS narrowede0
Outcome: yielde0
Direction: decreasee0

Not reportedComparator

Verbatim

e0
“one had a nonsignificant yield decrease as RS narrowed.”
✓ located verbatim in the source · abstract, characters 1128–1183

t0
“Soybean”
✓ located verbatim in the source · title, characters 25–32

Title

Row Spacing in the Early Soybean Production System

Glenn R. Bowers; James L. Rabb; Lanny O. Ashlock; et al. Agronomy Journal 2000. doi:10.2134/agronj2000.923524x

Other claims from this paper (5)

Intervention effect Five environmental clusters had significant yield gains of 17–36% as rows narrowed.
Intervention effect Three other clusters had nonsignificant yield increases with narrower rows.
Intervention effect One cluster had virtually no yield change with narrower rows.
Association Yield responded most to row spacing at 100 to 270 mm July and August rainfall.
Recommendation The authors recommend rows at most 40 cm to optimize ESPS yields in the midsouthern USA.

Mechanismobservedoriginal resultnegativemeasured

Claim · model-written summary

Reduced pod number accounted for the yield decrease.

Taxon: soybeansGlycine maxt0
Outcome: decrease in seed yielde0
Qualifier: decrease in number of pods per plante0

Verbatim

e0
“The decrease in seed yield observed in both experimentsmore » was due to a decrease in number of pods per plant”
✓ located verbatim in the source · abstract, characters 1164–1275

t0
“soybeans”
✓ located verbatim in the source · title, characters 95–103

Title

Comparison of experimental designs to determine effects of acidic precipitation on field-grown soybeans

Levi Evans; Keith F. Lewin; M Patti; et al. OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) 1982

Other claims from this paper (8)

Intervention effect Simulated acidic rain at pH 4.1 reduced soybean seed yield by 10.7 relative to pH 5.6.
Intervention effect Simulated acidic rain at pH 3.3 reduced soybean seed yield by 16.8 relative to pH 5.6.
Intervention effect Simulated acidic rain at pH 2.7 reduced soybean seed yield by 22.9% relative to pH 5.6.
Association Seed yield had a strong positive relation with rain pH in the first experiment.
Intervention effect In the unshielded experiment, pH 4.1 reduced soybean yield by 2.7 relative to pH 5.6.
Intervention effect In the unshielded experiment, pH 3.3 reduced soybean yield by 7.0 relative to pH 5.6.
Intervention effect In the unshielded experiment, pH 2.7 reduced soybean yield by 7.6 relative to pH 5.6.
Association In the second experiment seed mass rose with rain pH with a correlation coefficient of 0.97.

Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

Pods per plant were chiefly responsible for yield decrease.

Taxon: soybeanGlycine maxt0
Organ / stage: podse0
Outcome: yield decreasee0
Direction: decreasee0

Verbatim

e0
“the component most responsible for yield decrease was the number of pods per plant”
✓ located verbatim in the source · abstract, characters 948–1030

t0
“Soybean”
✓ located verbatim in the source · title, characters 130–137

Title

The Interaction of Sowing Date and Water Availability in Determining Plant Architecture, Fruiting Pattern and Yield Components of Soybean (Glycine max L. Merr.)

P. Ceccon; L. Dalla Costa; R. Giovanardi; et al. Journal of Agronomy and Crop Science 1994. doi:10.1111/j.1439-037x.1994.tb00552.x

Other claims from this paper (9)

Intervention effect Water shortage restricted crop evapotranspiration.
Intervention effect Water shortage restricted water uptake depth.
Intervention effect Low water availability reduced architecture traits.
Intervention effect Late sowing reduced architecture traits.
Intervention effect Late sowing shifted stem seed allocation downward.
Intervention effect Reduced water supply shifted stem seed allocation downward.
Intervention effect Water stress only slightly affected unit seed weight.
Intervention effect Early sown soybean lost more yield under reproductive phase water shortage.
Intervention effect Late sown soybean lost more yield under vegetative phase water shortage.

Intervention effectobservedreview summarynegativebasis n/a

Claim · model-written summary

Under low plant density the overall soybean yield may slightly decrease.

Taxon: SoybeanGlycine maxt0
Treatment: Low plant densitye3
Outcome: overall yielde3
Direction: decreasee3
Qualifier: may slightly decreasee3

Not reportedComparator

Verbatim

t0
“Soybean”
✓ located verbatim in the source · title, characters 53–60

e3
“Low plant density helps improve individual plant growth and nutrient use efficiency, although the overall yield may slightly decrease”
✓ located verbatim in the source · abstract, characters 288–421

Title

The Role of Plant Density and Nutrient Management in Soybean Yield Optimization

Jianhua Wang; Xin Lin; Xiaoying Li Legume Genomics and Genetics 2024. doi:10.5376/lgg.2024.15.0027

Other claims from this paper (6)

Intervention effect High plant density significantly increases soybean productivity by enhancing canopy light interception and dry matter accumulation.
Intervention effect High plant density may also lead to increased competition for resources in soybean.
Intervention effect Low plant density helps improve individual plant growth and nutrient use efficiency in soybean.
Intervention effect Proper nutrient supply and management strategies can enhance soybean adaptability to environmental stresses.
Intervention effect Proper nutrient supply and management strategies can increase soybean yield.
Intervention effect Proper nutrient supply and management strategies can reduce soybean input costs.

Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

Soybean yield tended to decrease with wider rows and narrower spacing within rows.

Taxon: soybeanGlycine maxe1
Outcome: yielde0
Direction: decreasee0
Qualifier: tendede0
Setting: row widthse0

Verbatim

e0
“yield tended to decrease with wider row widths and narrower within row spacings”
✓ located verbatim in the source · abstract, characters 890–969

e1
“soybean [ Glycine max (L.) Merr.]”
✓ located verbatim in the source · abstract, characters 35–68

Title

Soybean Planting Patterns in Relation to Yield and Yield Components

T. Ikeda Agronomy Journal 1992. doi:10.2134/agronj1992.00021962008400060002x

Other claims from this paper (4)

Intervention effect Twin-zigzag soybean patterns yielded more than twin-rectangular patterns at 70-cm width.
Association The higher yields came from more seeds per plant.
Intervention effect Weight per seed was unaffected by planting pattern.
Recommendation The authors proposed that square planting patterns could increase yield.

Observationobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

UA4805 showed a significant yield decrease in 2023 due to stink bug damage.

Taxon: soybeanGlycine maxe0
Material: ‘UA4805’e1
Interactor: stink buge1pest
Outcome: yielde1
Direction: decreasee1

Verbatim

e0
“A new soybean cultivar”
✓ located verbatim in the source · abstract, characters 0–22

e1
“a significant yield decrease in ‘UA4805’ in 2023 due to stink bug damage”
✓ located verbatim in the source · abstract, characters 592–664

Title

High-yield factors in the new soybean cultivar ‘Soramizuki’ derived from a US parent cultivar

Ryo Yamazaki; Yohei Nanjo; Masayasu Saruta; et al. Plant Production Science 2025. doi:10.1080/1343943x.2025.2452289

Other claims from this paper (6)

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Herbicide injury and defoliation interacted to decrease soybean yield.

Taxon: soybeanGlycine maxe1
Treatment: herbicide injury and defoliatione3
Outcome: yielde3
Direction: decreasee3
Qualifier: interacted over 1990 and 1991e3

Not reportedComparator

Verbatim

e1
“seed yield of soybean [ Glycine max (L.) Merr.]”
✓ located verbatim in the source · abstract, characters 525–572

e3
“Moreover, herbicide injury and defoliation interacted over 1990 and 1991 to decrease yield”
✓ located verbatim in the source · abstract, characters 1207–1297

Title

Soybean Yield and Pest Management as Influenced by Nematodes, Herbicides, and Defoliating Insects

J. A. Browde; L. P. Pedigo; M. D. K. Owen; et al. Agronomy Journal 1994. doi:10.2134/agronj1994.00021962008600040005x

Other claims from this paper (10)

Intervention effect Herbicide injury reduced soybean yield in 1990 and 1991.
Intervention effect Defoliation reduced soybean yield in 1990 and 1991.
Intervention effect Defoliation reduced pods per plant in soybean.
Intervention effect Herbicide injury decreased pods per plant in soybean in 1990.
Intervention effect Herbicide injury decreased weight per seed in soybean in 1990 and 1991.
Intervention effect Soybean cyst nematode stress alone never affected soybean yield.
Intervention effect Interactions of soybean cyst nematode with herbicides and with defoliation reduced soybean yield in 1990.
Observation No treatment effects on soybean yield were found in 1989.
Recommendation Lower economic injury levels for green cloverworm were developed for soybean treated with acifluorfen plus bentazon.
Recommendation Growers should consider adjusting weed and insect management strategies for soybean fields infested with soybean cyst nematode.

Intervention effectobservedoriginal resultnegativeprojected

Claim · model-written summary

Loss of seed treatments would decrease soybean yield through yield losses.

Taxon: soybeansGlycine maxe2
Treatment: The loss of seed treatmentse2
Outcome: yield lossese2
Direction: decreaseinferrede2

Not reportedComparator

Verbatim

e2
“The loss of seed treatments would result in yield losses to both corn and soybeans”
✓ located verbatim in the source · abstract, characters 203–285

Title

PESTICIDE ASSESSMENT OF FIELD CORN AND SOYBEANS: NORTHERN PLAINS STATES

Bergman, Paul W.; Davis, Ronald A.; Fertig, Stanford N.; et al. AgEcon Search (University of Minnesota, USA) 1985. doi:10.22004/ag.econ.277781

Other claims from this paper (4)

Observation Without insecticides, corn rootworm larvae and other soil insects would cause substantial corn yield losses.
Intervention effect Loss of seed treatments would decrease corn yield through yield losses.
Intervention effect Loss of thiocarbamate herbicides would cause the greatest corn yield losses among herbicides.
Intervention effect Loss of dinitroanilines or triazines would cause the greatest soybean yield losses.

Intervention effectobservedoriginal resultnegativeprojected

Claim · model-written summary

Elevated temperature was projected to decrease future soybean yield.

Taxon: soybeanGlycine maxe0
Treatment: elevated temperaturee0
Outcome: soybean yielde0
Direction: decreasee0
Qualifier: For the period from 2081 to 2100e0

Not reportedComparator

Verbatim

e0
“For the period from 2081 to 2100, soybean yield was projected to decrease due to elevated temperature”
✓ located verbatim in the source · abstract, characters 812–913

Title

Simulation of CO2 enrichment and climate change impacts on soybean production

Tongcheng Fu; Bokeun Ha; Jonghan Ko International Agrophysics 2016. doi:10.1515/intag-2015-0069

Other claims from this paper (5)

Method / resource The model reproduced measured soybean growth and yield well under ambient and elevated CO2.
Intervention effect Elevated precipitation was projected to increase soybean yield.
Intervention effect Elevated CO2 was projected to increase soybean yield.
Recommendation Late planting within days 145 to 152 could mitigate warming damage to soybean yield.
Recommendation Control of genetic responses to thermal days in reproduction was offered as another mitigation option.

“yield decrease”

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