Search claims · PlantClaims

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.

Mechanismauthor interpretationoriginal resultnegativemeasured

Claim · model-written summary

The reduced nodule number in wox5abc mutants is attributable to a decrease in primordium density.

Taxon: soybeanGlycine maxt0
Organ / stage: primordiume3
Outcome: primordium densitye3
Direction: decreasee3

Verbatim

t0
“in soybean”
✓ located verbatim in the source · title, characters 121–131

e3
“attributable to a decrease in primordium density rather than impaired rhizobial infection”
✓ located verbatim in the source · abstract, characters 591–680

Title

WOX5 expression stimulated by the transcription factor NF-YAc reprograms cortical cells for nodule primordium initiation in soybean

Linfang Li; Yifu Chen; Runxin Zhu; et al. Journal of Experimental Botany 2026. doi:10.1093/jxb/erag051

Other claims from this paper (9)

Observation WOX5 is activated by rhizobia specifically in cortical cells that give rise to nodule primordia in soybean.
Intervention effect Knockout of the three WOX5 homologs reduced nodule number in soybean.
Intervention effect Knockout of the three WOX5 homologs attenuated nitrogenase activity in soybean.
Observation Loss of WOX5 function does not impair rhizobial infection in soybean.
Observation A 442 bp legume-specific fragment of the WOX5a promoter is necessary and sufficient for primordium-specific expression.
Mechanism NF-YAc directly binds the WOX5a promoter fragment and activates expression of WOX5a.
Intervention effect Loss of NF-YAc phenocopies the wox5abc mutant in soybean.
Intervention effect NF-YAc overexpression fails to rescue nodulation in wox5abc mutants.
Mechanism NF-YAc-mediated activation of WOX5 initiates a de novo stem-cell niche in root cortical cells.

Intervention effectobservedoriginal resultmixedmeasured

Claim · model-written summary

Delaying sowing and increasing density changed the yield of Hefeng 50 in an increase-then-decrease trend.

Taxon: soybeanGlycine maxe0
Material: Hefeng 50e0
Treatment: sowing date delayed and density increasede1
Outcome: yielde1
Direction: increase-and-then-decrease trende1

Not reportedComparator

Verbatim

e0
“New soybean variety Hefeng 50”
✓ located verbatim in the source · abstract, characters 0–29

e1
“with the sowing date delayed and density increased,the yield of Hefeng 50 showed increase-and-then-decrease trend”
✓ located verbatim in the source · abstract, characters 313–426

Title

Influence of Sowing Date and Density on Oil Content and Yield of High-oil and High-yield Soybean Variety Hefeng 50

Zhixin Wang 2009

Other claims from this paper (4)

Intervention effect Delaying the sowing date decreased the oil content of soybean Hefeng 50.
Intervention effect Planting density had no obvious influence on the oil content of soybean Hefeng 50.
Intervention effect Planting density of 25×10^4 plants/ha with a 9 May sowing date gave the highest yield of Hefeng 50.
Intervention effect Planting density of 25×10^4 plants/ha with a 9 May sowing date gave higher oil content in Hefeng 50.

Recommendationauthor interpretationoriginal resultbasis n/a

Claim · model-written summary

The authors recommend maintaining soybean plant density as recommended to avoid a decrease in grain yield.

Taxon: soybeanGlycine maxe0
Outcome: Plant density should be maintained as recommendede6

Verbatim

e0
“An important limitation to increased soybean [Glycine max (L.) Merr.] grain yield”
✓ located verbatim in the source · abstract, characters 0–81

e6
“Plant density should be maintained as recommended to avoid a decrease in grain yield”
✓ located verbatim in the source · abstract, characters 1455–1539

Title

Modification of soybean plant architecture through growth regulators and population variation

Willian Pelisser da Rosa; Andréia Caverzan; Geraldo Chavarria Australian Journal of Crop Science 2021. doi:10.21475/ajcs.21.15.12.p3322

Other claims from this paper (6)

Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

Yield reduction was related to reduced planting density.

Taxon: soybeanGlycine maxt0
Outcome: this reductione0
Qualifier: decrease in planting densitye0
Setting: planting densitye0

Not reportedDirection

Verbatim

e0
“this reduction was related to decrease in planting density.”
✓ located verbatim in the source · abstract, characters 1376–1435

t0
“soybean”
✓ located verbatim in the source · title, characters 47–54

Title

Seed deterioration and seedling germination of soybean (Glycine max L.) cv. Sahar.

H. Jafari; Rohollah Najafi; Afshin Soltani; et al. International Journal of Agronomy and Plant Production 2013

Other claims from this paper (8)

Association Germination percentage and rate declined with longer deterioration.
Intervention effect Normal seedling percentage fell from 84% at 7 days to 55% at 35 days.
Association Planting density decreased 0.23 plants per m 2 per deterioration day.
Intervention effect Flowering was later after 35 days of deterioration than control.
Intervention effect Pod feeding was affected by deterioration.
Intervention effect Other phenological stages were unaffected.
Association Grain yield declined 4.03 g per deterioration day.
Intervention effect Yield components were unaffected by seed deterioration.

Associationobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

The decrease in B. subtilis population density was significantly correlated with rainfall in the field.

Taxon: soybeanGlycine maxe1
Treatment: rainfalle2
Outcome: population densitye2
Direction: decreasee2
Value: r < −0·93e2

Verbatim

e1
“Sclerotinia stem rot (SSR), caused by Sclerotinia sclerotiorum , is a major disease of soybean in Canada”
✓ located verbatim in the source · abstract, characters 0–104

e2
“The decrease in population density was significantly correlated with rainfall in the field ( r < −0·93, P < 0·01), suggesting that the biocontrol bacteria may be washed away by rain”
✓ located verbatim in the source · abstract, characters 1360–1541

Title

Biocontrol of sclerotinia stem rot ( Sclerotinia sclerotiorum ) of soybean using novel Bacillus subtilis strain SB24 under control conditions

J. X. Zhang; A. G. Xue Plant Pathology 2009. doi:10.1111/j.1365-3059.2009.02227.x

Other claims from this paper (10)

Associationobservedoriginal resultpositivemeasured

Claim · model-written summary

Lower planting density produced a larger increase in branch seed yield, which compensated for the decrease in main stem number per unit land area, and this was closely associated with cultivar differences in yield response.

Taxon: soybeanGlycine maxe0
Treatment: lower planting densitye2
Outcome: branch seed yielde2
Direction: increasee2
Qualifier: compensated for the decrease in main stem number per unit land areae2

Verbatim

e0
“variability among soybean cultivars in yield response at different planting densities”
✓ located verbatim in the source · abstract, characters 45–130

e2
“The difference in yield in response to planting density among cultivars was closely associated with a larger increase in branch seed yield with lower planting density, which effectively compensated for the decrease in main stem number per unit land area”
✓ located verbatim in the source · abstract, characters 804–1057

Title

Branch development responses to planting density and yield stability in soybean cultivars

Agud, amu; 義平, 大樹; Shiraiwa, Tatsuhiko Institutional Repositories DataBase (IRDB) 2016

Other claims from this paper (2)

Mechanismhypothesisoriginal resultmeasured

Claim · model-written summary

Biocontrol bacteria may be washed away by rain, which may explain the decrease in population density.

Taxon: soybeanGlycine maxe1
Outcome: population densitye2
Qualifier: the biocontrol bacteria may be washed away by raine2

Verbatim

e1
“Sclerotinia stem rot (SSR), caused by Sclerotinia sclerotiorum , is a major disease of soybean in Canada”
✓ located verbatim in the source · abstract, characters 0–104

e2
“The decrease in population density was significantly correlated with rainfall in the field ( r < −0·93, P < 0·01), suggesting that the biocontrol bacteria may be washed away by rain”
✓ located verbatim in the source · abstract, characters 1360–1541

Title

Biocontrol of sclerotinia stem rot ( Sclerotinia sclerotiorum ) of soybean using novel Bacillus subtilis strain SB24 under control conditions

J. X. Zhang; A. G. Xue Plant Pathology 2009. doi:10.1111/j.1365-3059.2009.02227.x

Other claims from this paper (10)

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Higher density decreased carbohydrate accumulation duration by 13%.

Taxon: soybeanGlycine maxe0
Treatment: PD3e0
Outcome: continuous accumulation time ( t c ) of these carbohydratese0
Direction: decreasee0
Value: 13%e0
Comparator: lower planting density (PD1)e1

Verbatim

e0
“a 29% decrease in the maximum accumulation rate ( c max ) of sucrose, lignin, and cellulose was observed, along with a 13% decrease in the continuous accumulation time ( t c ) of these carbohydrates in intercropped soybean at PD3”
✓ located verbatim in the source · abstract, characters 1163–1392

e1
“compared to the lower planting density (PD1)”
✓ located verbatim in the source · abstract, characters 1103–1147

Title

Quantifying the effects of plant density on soybean lodging resistance and growth dynamics in maize-soybean strip intercropping

Li Wang; Bin Cheng; Tao Zhou; et al. Frontiers in Plant Science 2023. doi:10.3389/fpls.2023.1264378

Other claims from this paper (9)

Intervention effect Maize shading reduced lignin accumulation in soybean stems relative to monoculture.
Intervention effect Maize shading decelerated soybean organ growth relative to monoculture.
Intervention effect Higher planting density reduced maximum dry matter growth rate by 28% in intercropped soybean.
Intervention effect Higher planting density decreased time to maximum dry matter growth rate by 11% in intercropped soybean.
Intervention effect Higher density decreased maximum accumulation rate of sucrose, lignin, and cellulose by 29%.
Mechanism Shading preferentially allocated assimilates to soybean stems and enhanced early plant height.
Observation At later stages a greater share of sucrose was allocated to soybean leaves.
Mechanism Shading hindered sucrose conversion to stem lignin and cellulose, reducing lodging resistance index.
Recommendation The authors recommend optimizing intercropping density to alleviate shading and enhance productivity.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Shading reduced stomatal density.

Taxon: soybeanGlycine maxt0
Treatment: shadinge1
Outcome: stomatal density (Nstoma)e0
Direction: decreasee0

Not reportedComparator

Verbatim

t0
“soybean”
✓ located after whitespace/quote normalisation · title, characters 36–43

e0
“The yield decrease was due to the decrease of total biomass (TDW), branch number, node number, pod number, and seed number, and stomatal density (Nstoma) without any change in harvest index (HI) and guard cell length (Lguard).”
✓ located verbatim in the source · abstract, characters 1090–1316

e1
“seed yield decreased from 248 g m −2 to 205 g m −2 by the difference of shading.”
✓ located verbatim in the source · abstract, characters 1009–1089

Title

Yield Performance of Shade Tolerant Soybean Cultivars under Shaded Environment at Various Planting Densities

A Saryoko; Z Yursak; Y Astuti; et al. IOP Conference Series Earth and Environmental Science 2021. doi:10.1088/1755-1315/715/1/012029

Other claims from this paper (7)

Intervention effect Greater shading reduced soybean seed yield from 248 to 205 g m −2.
Intervention effect Shading reduced total biomass, branch number, node number, pod number and seed number.
Intervention effect Harvest index and guard cell length did not change with shading.
Intervention effect Normal planting density gave better seed yield and total dry weight than high density.
Observation Deep-shaded Dena-1 at normal density achieved 230 g m −2 seed yield.
Intervention effect Deep-shaded Dena-1 yield declined significantly to 161 g m −2 at high density.
Recommendation The authors recommend Dena-1 at single-row density of 12.5 plants m −2 to maintain yield under shade.

“decrease in density”

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