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“yield decrease”

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Taxon: soybean ✕

Taxon groups are the verbatim names found in the abstracts (case-insensitive), not normalised: maize, corn and Zea mays are separate groups here. The Organism view merges them through NCBI Taxonomy.

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.

Associationobservedoriginal resultno effectmeasured

Claim · model-written summary

Glyphosate formulation did not interact with yield decrease.

Taxon: soybeanGlycine maxe1
Treatment: formulatione0
Outcome: formulation interaction with yield decreasee0

Not reportedDirection

Verbatim

e0
“There was not found any formulation interaction with yield decrease.”
✓ located verbatim in the source · abstract, characters 1245–1313

e1
“glyphosate-tolerant soybean”
✓ located verbatim in the source · abstract, characters 632–659

Title

Glyphosate Tolerant Soybean Response to Different Management Systems

Alfredo J. P. Albrecht; Leandro P. Albrecht; Arthur A. M. Barroso; et al. Journal of Agricultural Science 2017. doi:10.5539/jas.v10n1p204

Other claims from this paper (1)

Intervention effect Post-emergent glyphosate was associated with a season-dependent 5% soybean yield reduction without visible symptoms.

Associationobservedoriginal resultpositivemeasured

Claim · model-written summary

The decrease in redistributed seed N correlated strongly with increased yield.

Taxon: SoybeanGlycine maxt0
Treatment: this decreasee0
Outcome: increased yielde0
Direction: increasede0

Verbatim

t0
“Soybean”
✓ located verbatim in the source · title, characters 110–117

e0
“this decrease strongly correlated with increased yield”
✓ located verbatim in the source · abstract, characters 1164–1218

Title

Elevated CO2 Increases Nitrogen Fixation at the Reproductive Phase Contributing to Various Yield Responses of Soybean Cultivars

Yansheng Li; Zhenhua Yu; Xiaobing Liu; et al. Frontiers in Plant Science 2017. doi:10.3389/fpls.2017.01546

Other claims from this paper (7)

Association Yield response to elevated CO2 correlated strongly with increased symbiotically fixed N between R5 and R8.
Intervention effect Elevated CO2 caused small increases in fertilizer-derived N uptake from R5 to R8.
Intervention effect Elevated CO2 caused small increases in soil-derived N uptake from R5 to R8.
Association Increases in fertilizer-derived and soil-derived N uptake did not correlate with enhanced yield.
Intervention effect Elevated CO2 reduced the proportion of seed N redistributed from shoots to seeds.
Association Total N uptake was associated with increased fixed N per nodule under elevated CO2.
Association Total N uptake was not associated with changes in nodule biomass, density or root length.

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.

Recommendationauthor interpretationoriginal resultpositivebasis n/a

Claim · model-written summary

The authors infer that managing the identified factors could decrease the soybean yield gap.

Taxon: soybeanGlycine maxe0
Outcome: decrease the yield gape0

Verbatim

e0
“managing magnitude of these variables will decrease the yield gap in soybean crop”
✓ located verbatim in the source · abstract, characters 851–932

Title

Farm level yield gap analysis in soybean crop in Ahilyanagar district of Maharashtra State

Prajakta P Nikam; Manohar B Dhadwad; Kunal P Pawar; et al. International Journal of Agriculture Extension and Social Development 2025. doi:10.33545/26180723.2025.v8.i6a.1991

Other claims from this paper (9)

Observation 30.73 per cent of growers reported a low yield gap.
Observation 23.96 percent of growers reported a medium yield gap.
Observation Mean YGI was 10.04 per cent.
Observation Mean YGII was 16.11 per cent.
Observation Mean YG III was 29.06 per cent.
Association Land holding significantly contributed to the soybean yield gap.
Association Annual income significantly contributed to the soybean yield gap.
Association Management practices significantly contributed to the soybean yield gap.
Association Water stress significantly contributed to the soybean yield gap.

Intervention effectobservedoriginal resultmixedmeasured

Claim · model-written summary

PP333 could increase or decrease yield.

Taxon: soybeanGlycine maxt0
Treatment: PP333e0
Outcome: yielde0
Direction: increase or decreasee0

Not reportedComparator

Verbatim

e0
“PP333 applied could lead to plant height reduction, leaf smaller, yield increase or decrease”
✓ located verbatim in the source · abstract, characters 1073–1168

t0
“soybean”
✓ located verbatim in the source · title, characters 49–56

Title

Effect of culture factors on growth and yield of soybean II. Effect of fertilizer application, watering, growth regulate measures on yield

Wang Wen-xiu Chinese Journal of Oil Crop Scieves 2003

Other claims from this paper (11)

Intervention effect Seedling-stage fertilizer and watering promoted middle organ growth.
Intervention effect Flowering-stage fertilizer and watering increased upper organ growth.
Intervention effect Nitrogen and phosphorus fertilizers enhanced nutrient absorption in corresponding growth-centre organs.
Intervention effect Nitrogen fertilizer increased soybean nitrogen content.
Intervention effect Nitrogen fertilizer increased soybean phosphorus content.
Intervention effect Nitrogen fertilizer increased soybean potassium content.
Association Later fertilizer application tended to raise seed protein content.
Intervention effect Fertilization from initial flowering to 10 days later produced 15.6%～24.2% higher yield than the check.
Intervention effect PP333 reduced plant height.
Intervention effect PP333 made leaves smaller.
Intervention effect Huafu increased yield by 5.8%.

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Soybean yield did not decrease with cover crops.

Taxon: soybeanGlycine maxe5
Treatment: with CCe5
Outcome: yielde5
Direction: did not decreasee5

Not reportedComparator

Verbatim

e5
“Cover crops significantly increased vegetable crop yields and decreased the silage corn yield; however, grain corn, soybean, and winter wheat yield did not decrease with CC”
✓ located verbatim in the source · abstract, characters 1013–1185

Title

Do Cover Crops Increase Subsequent Crop Yield in Temperate Climates? A Meta-Analysis

Inderjot Chahal; Laura L. Van Eerd Sustainability 2023. doi:10.3390/su15086517

Other claims from this paper (15)

Intervention effect Legume cover crop species increased subsequent crop yield significantly more than grass, by 14%.
Intervention effect Legume cover crop species increased subsequent crop yield significantly more than nonlegume broadleaves, by 7%.
Intervention effect Legume cover crop species increased subsequent crop yield significantly more than mixtures, by 2%.
Intervention effect Incorporating cover crop residue into soil increased crop yield by about 15% compared with leaving the residue on the soil surface.
Intervention effect Grass cover crops enhanced crop yield by 14% relative to no cover crop in non-organic vegetable systems.
Intervention effect Legume cover crops enhanced crop yield by 19% relative to no cover crop in non-organic vegetable systems.
Intervention effect Legume cover crops increased crop yield by 18% relative to no cover crop in coarse textured soil.
Intervention effect Legume cover crops increased crop yield by 4% relative to no cover crop in medium textured soil.
Intervention effect Legume cover crops increased crop yield by 11% relative to no cover crop under high precipitation.
Intervention effect Cover crops significantly increased vegetable crop yields.
Intervention effect Cover crops decreased silage corn yield.
Intervention effect Grain corn yield did not decrease with cover crops.
Intervention effect Winter wheat yield did not decrease with cover crops.
Intervention effect Cover crops in no-tillage and plow tillage systems increased crop yield compared with the no-CC control.
Recommendation Crop yield response to cover crops might become more robust when pedo-climatic and agronomic factors are considered.

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