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“decrease in density”

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Taxon: corn ✕

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.

Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

CRP fields had lower soil bulk density than corn fields.

Taxon: cornZea mays subsp. mayse0
Outcome: soil bulk densitye0
Direction: decreasee0
Comparator: corn fieldse0

Verbatim

e0
“Results showed that CRP fields decrease soil bulk density and increase carbon sequestration over time when compared to corn fields.”
✓ located verbatim in the source · abstract, characters 756–887

Title

Carbon sequestration and weedy invasion in CRP fields

Destiny Danielle Magee UNI ScholarWorks (University of Northern Iowa) 2020

Other claims from this paper (8)

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

150% more than optimum density decreased weed density by 27.5%

Taxon: cornZea mays subsp. mayst0
Treatment: 150% more than optimum densitye0
Interactor: weedse0weed
Outcome: densitye0
Direction: decreasee0
Value: 27.5%e0
Comparator: 50%e0

Verbatim

e0
“Increase of density of mungbean from 50% into 150% more than optimum density, decrease the density and dry weight of weeds, 27.5% and 22%, respectively”
✓ located verbatim in the source · abstract, characters 1155–1306

t0
“corn (Zea mays)”
✓ located verbatim in the source · title, characters 86–101

Title

Effect of mungbean (Vigna radiate) living mulch on density and dry weight of weeds in corn (Zea mays) field.

M Bakhtiari Moghadam; S Vazan; B Darvishi; et al. PubMed 2011

Other claims from this paper (7)

Observation Nine weed species occurred in the field.
Observation Four broadleaf weed species occurred in every plot.
Intervention effect 8 leaves stage of corn decreased weed density by 53%
Intervention effect 8 leaves stage of corn decreased weed dry weight of weeds by 51%
Intervention effect 150% more than optimum density decreased weed dry weight of weeds by 22%
Intervention effect 8 leaves stage of corn, and 150% more than optimum density decreased weed density by 69%
Intervention effect 8 leaves stage of corn, and 150% more than optimum density decreased weed dry weight of the weeds by 63.5%

Associationobservedoriginal resultpositivemeasured

Claim · model-written summary

In the second-crop season, the severity of white spot in corn decreased as plant density increased.

Taxon: cornZea mays subsp. mayst0
Treatment: plant densitye0
Outcome: severity of white spote0
Direction: decreasee0
Setting: second-crop seasone0

Verbatim

t0
“corn”
✓ located verbatim in the source · title, characters 27–31

e0
“in the second-crop season, there is a decrease in the severity of white spot as plant density is increased”
✓ located verbatim in the source · abstract, characters 949–1055

Title

Grain yield performance of corn in different plant arrangements

Paulo H. Cazarim; Gabriel D. Shimizu; Lucas H. Fantin; et al. Revista Caatinga 2023. doi:10.1590/1983-21252023v36n306rc

Other claims from this paper (1)

Association In the first-crop season, corn yield may increase significantly as plant density increases.

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

150% more than optimum density decreased weed dry weight of weeds by 22%

Taxon: cornZea mays subsp. mayst0
Treatment: 150% more than optimum densitye0
Interactor: weedse0weed
Outcome: dry weight of weedse0
Direction: decreasee0
Value: 22%e0
Comparator: 50%e0

Verbatim

e0
“Increase of density of mungbean from 50% into 150% more than optimum density, decrease the density and dry weight of weeds, 27.5% and 22%, respectively”
✓ located verbatim in the source · abstract, characters 1155–1306

t0
“corn (Zea mays)”
✓ located verbatim in the source · title, characters 86–101

Title

Effect of mungbean (Vigna radiate) living mulch on density and dry weight of weeds in corn (Zea mays) field.

M Bakhtiari Moghadam; S Vazan; B Darvishi; et al. PubMed 2011

Other claims from this paper (7)

Observation Nine weed species occurred in the field.
Observation Four broadleaf weed species occurred in every plot.
Intervention effect 8 leaves stage of corn decreased weed density by 53%
Intervention effect 8 leaves stage of corn decreased weed dry weight of weeds by 51%
Intervention effect 150% more than optimum density decreased weed density by 27.5%
Intervention effect 8 leaves stage of corn, and 150% more than optimum density decreased weed density by 69%
Intervention effect 8 leaves stage of corn, and 150% more than optimum density decreased weed dry weight of the weeds by 63.5%

Associationobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Emergence declined significantly with density above 600 eggs.

Taxon: CornZea mays subsp. mayst0
Treatment: viable egg densitiese0
Interactor: Western Corn RootwormDiabrotica virgifera virgiferat0pest
Outcome: percentage of emergencee0
Direction: decreasee0

Verbatim

e0
“as viable egg densities increased from 600 to 2400 per 30.5 cm there was a significant decrease in percentage of emergence.”
✓ located verbatim in the source · abstract, characters 1181–1304

t0
“Western Corn Rootworm”
✓ located verbatim in the source · title, characters 59–80

Title

Density-Dependent and Density-Independent Mortality of the Western Corn Rootworm: Impact on Dose Calculations of Rootworm-Resistant Bt Corn

Bruce E. Hibbard; Lisa N. Meihls; Mark R. Ellersieck; et al. Journal of Economic Entomology 2010. doi:10.1603/ec09277

Other claims from this paper (7)

Association Emergence did not correlate with low infestation levels.
Observation In 2005, 8.04% of eggs produced an adult at low density.
Observation In 2007, that fraction was 2.9%.
Observation Across densities 92 to 97% failed to establish and produce adults.
Observation Density dependent mortality began at 851 eggs per 30.5 cm in the 2005 analysis.
Observation High density mortality killed 54.4% of established larvae.
Observation Combined data placed onset at about 800 viable eggs per 30.5 cm.

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Narrow corn rows suppressed weed biomass more than high plant density.

Taxon: CornZea mays subsp. mayst0
Treatment: narrow row spacinge0
Outcome: biomass production by both transplanted and naturally occurring weedse0
Direction: decreasee0
Comparator: high plant population densitye0

Verbatim

t0
“Corn (Zea mays)”
✓ located verbatim in the source · title, characters 54–69

e0
“the decrease in biomass production by both transplanted and naturally occurring weeds was greater due to the narrow row spacing than due to the high plant population density.”
✓ located verbatim in the source · abstract, characters 849–1023

Title

Weed Biomass Production Response to Plant Spacing and Corn (Zea mays) Hybrids Differing in Canopy Architecture¹

SULTAN H. BEGNA; ROBERT I. HAMILTON; LIANNE M. DWYER; et al. Weed Technology 2001. doi:10.1614/0890-037x(2001)015[0647:wbprtp]2.0.co;2

Other claims from this paper (4)

Intervention effect Narrow rows plus high density increased corn canopy light interception by 3 to 5%.
Intervention effect Weed biomass under corn canopy was five to eight times lower than in weed monoculture.
Intervention effect Early-maturing LRS and P3979 generally reduced weed biomass more than LMBL.
Recommendation The authors suggest hybrid selection and plant spacing for integrated weed control.

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Increasing density increased corn yield.

Taxon: cornZea mays subsp. mayst0
Treatment: increasing corn densitye0
Outcome: corn yielde0
Direction: increasee0

Not reportedComparator

Verbatim

t0
“corn”
✓ located verbatim in the source · title, characters 49–53

e0
“both increasing corn density and applying plastic film mulching can increase the corn yield,but lead to the decrease in soil water storage”
✓ located verbatim in the source · abstract, characters 1196–1334

Title

Effects of planting density on soil moisture and corn yield under plastic film mulching in a rain-fed region of northeast China

Sun Shi-ju Shengtaixue zazhi 2014

Other claims from this paper (6)

Association Soil moisture rose with rainfall and fell during drought across densities.
Intervention effect Film mulching increased corn yield at equal planting density.
Intervention effect The greatest mulch-associated yield increment was 14.3% at 60000 plants·hm- 2.
Association Density influenced water-use efficiency more under mulch than without mulch.
Intervention effect Increasing density decreased soil water storage.
Intervention effect Plastic film mulch decreased soil water storage.

Mechanismauthor interpretationoriginal resultpositivemeasured

Claim · model-written summary

The authors link manure-derived organic matter to better soil properties, especially lower bulk density.

Taxon: cornZea mays subsp. mayse0
Treatment: manure applicatione1
Outcome: better soil physico-chemical properties and enzyme activitiese1
Direction: decreasee1

Verbatim

e0
“The relationship between corn yield and measured soil properties”
✓ located verbatim in the source · abstract, characters 707–771

e1
“improvement in soil organic matter (SOM) from manure application greatly and positively contributed to better soil physico-chemical properties and enzyme activities, especially decrease in ρb”
✓ located verbatim in the source · abstract, characters 2319–2510

Title

Soil properties and corn (Zea mays L.) production under manure application combined with deep tillage management in solonetzic soils of Songnen Plain, Northeast China

Qing-feng MENG; Da-wei LI; Juan ZHANG; et al. Journal of Integrative Agriculture 2016. doi:10.1016/s2095-3119(15)61196-0

Other claims from this paper (11)

Intervention effect Manure plus deep tillage increased corn yield relative to conventional tillage.
Intervention effect Manure plus deep tillage improved soil properties relative to conventional tillage.
Intervention effect Manure, deep tillage and plastic film produced 11 472 kg ha−1 corn yield in 2013, 38% above control.
Intervention effect Manure, deep tillage and plastic film produced 12 228 kg ha−1 corn yield in 2014, 43% above control.
Observation Factor analysis identified soil fertility, saline-alkaline and structural factors in both years.
Observation Manure and deep tillage distinguished treated from conventionally tilled soil properties.
Association Corn yield correlated positively with urease and available P.
Association Corn yield correlated negatively with pH, EC, ESP and bulk density.
Association Bulk density was the dominant yield factor by discriminant coefficient.
Mechanism The authors attribute yield gains mainly to improved soil structure, then reduced salinity and increased urease and available P.
Recommendation The authors recommend first improving soil structure for corn production.

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The staged cycloxidim and dicamba plus tritosulfuron application reduced weed density and biomass by 85%.

Taxon: cornZea mays subsp. mayse0
Treatment: cycloxidim application at 300 and 150 g a.i. ha-1 in 3-4 leaf stage of corn plus application of dicamba + tritosulfuron at 100 + 50 g a.i. ha-1 in 5-6 leaf stage of corne0
Interactor: weede0weed
Outcome: weed density and biomasse0
Direction: decreasee0
Value: 85%e0

Not reportedComparator

Verbatim

e0
“The highest weed control was observed in cycloxidim application at 300 and 150 g a.i. ha-1 in 3-4 leaf stage of corn plus application of dicamba + tritosulfuron at 100 + 50 g a.i. ha-1 in 5-6 leaf stage of corn, leading to 85% decrease in weed density and biomass.”
✓ located verbatim in the source · abstract, characters 717–981

t0
“Maize (Zea mays)”
✓ located verbatim in the source · title, characters 51–67

Title

Feasibility of Cycloxydim Herbicide Application in Maize (Zea mays) Weed Control

Majid Anabestani; Ebrahim Izadi-Darbandi; Mehdi Rastgoo; et al. Journal of Crop production and processing 2017. doi:10.18869/acadpub.jcpp.7.2.103

Other claims from this paper (6)

Intervention effect Cycloxydim plus dicamba and tritosulfuron above 150 g active ingredient per hectare controlled weeds more effectively than other herbicides.
Intervention effect Eradican plus 2,4-D and MCPA gave the lowest weed control, at 55%.
Intervention effect Herbicide treatments had no significant effect on corn grain yield or biomass.
Observation The highest yield occurred with the staged cycloxidim combination.
Observation The lowest yield occurred with Eradican plus 2,4-D and MCPA.
Recommendation The authors recommend cycloxidim application in cycloxydim-tolerant maize for sustainable weed management.

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The 0.5x herbicide rate decreased weed seed density compared with an untreated check (239 vs. 14 241 seeds m-2).

Taxon: cornZea mays subsp. mayst0
Treatment: Herbicide application at the 0.5× ratee2
Interactor: weede1weed
Outcome: weed seed densitye1
Direction: decreaseinferrede1
Value: 239 vs. 14 241 seeds m -2e1
Comparator: untreated checke2

Verbatim

t0
“Ontario field corn”
✓ located verbatim in the source · title, characters 96–114

e2
“Herbicide application at the 0.5× rate versus an untreated check”
✓ located verbatim in the source · abstract, characters 567–631

e1
“weed seed density (239 vs. 14 241 seeds m -2 )”
✓ located verbatim in the source · abstract, characters 801–847

Title

Reduced herbicide rates provide acceptable weed control regardless of corn planting strategy in Ontario field corn

Peter H Sikkema; Robert E Nurse; Tom Welacky; et al. Canadian Journal of Plant Science 2008. doi:10.4141/cjps07082

Other claims from this paper (7)

Intervention effect The 0.5x herbicide rate increased corn yield compared with an untreated check (8.3 vs. 4.9 t ha-1).
Intervention effect The 0.5x herbicide rate decreased weed dry weight compared with an untreated check (9.4 vs. 240.4 g m-2).
Intervention effect The 0.5x herbicide rate decreased weed plant density compared with an untreated check (11.0 vs. 52.6 plants m-2).
Intervention effect Corn LAI was not affected by decreasing the herbicide rate.
Intervention effect Increasing corn plant density was not a factor in reducing herbicide inputs.
Intervention effect Decreasing corn row spacing was not a factor in reducing herbicide inputs.
Recommendation Herbicide rate could be reduced by up to 50% while maintaining corn grain yield, weed density, weed dry weight and weed seeds entering the soil seed bank.

Lexical search (BM25). All words must match; if nothing does, any word. Organism names also match every spelling of the same organism. No semantic search yet.

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