Integration of Agronomic and Weed Control Methods in Managing Weeds in Maize

Abstract

Field experiments conducted for two years revealed that dry matter of weeds and weed population was significantly lowest with integration of chemical weed control, maize + soybean (1:1) cropping system, 90,000 maize plant population and 50 percent higher than the reccmnended fertility level. However, significantly highest maize grain yield and maize equivalent yield were obtained with integration of chemical weed control, maize + soybean (1:1) cropping system, 75,000 maize population and 50 percent higher fertilization than recommended.

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Claims 2

Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

The 90,000 maize population combination gave the lowest weed dry matter and population.

Taxon: MaizeZea mayst0
Treatment: integration of chemical weed control, maize + soybean (1:1) cropping system, 90,000 maize plant population and 50 percent higher than the reccmnended fertility levele0
Interactor: weedse0weed
Outcome: dry matter of weeds and weed populatione0
Direction: loweste0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

*Zea mays* · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0
“dry matter of weeds and weed population was significantly lowest with integration of chemical weed control, maize + soybean (1:1) cropping system, 90,000 maize plant population and 50 percent higher than the reccmnended fertility level”
✓ located verbatim in the source · abstract, characters 56–291 · show in text ↑

t0
“Integration of Agronomic and Weed Control Methods in Managing Weeds in Maize”
✓ located verbatim in the source · title, characters 0–76 · show in text ↑

Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

The 75,000 maize population combination gave the highest maize grain and equivalent yields.

Taxon: maizeZea mayse0
Treatment: integration of chemical weed control, maize + soybean (1:1) cropping system, 75,000 maize population and 50 percent higher fertilization than recommendede0
Outcome: maize grain yield and maize equivalent yielde0
Direction: higheste0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim

e0
“significantly highest maize grain yield and maize equivalent yield were obtained with integration of chemical weed control, maize + soybean (1:1) cropping system, 75,000 maize population and 50 percent higher fertilization than recommended”
✓ located verbatim in the source · abstract, characters 302–541 · show in text ↑

Glycine max · weed · Zea mays (maize)Positive and negative results

18 papers: 16 positive, 2 negative or no effect

15 papers in the same direction as this paper · 1 in the opposite direction · 1 reporting no difference from an alternative

negative
Soybean intercropping produced maximum weed density and biomass.
Evaluation of Organic and Inorganic Mulching as an Integrated Weed Management Strategy in Maize Under Rainfed Conditions · 2018
Opposite direction
no effect
Weed control did not differ among soybean stubble, hairy vetch, and rye soil covers averaged over management and herbicide.
Cover Crop Management and Weed Control in Corn (Zea mays) · 1993 · compared with soybean stubble, hairy vetch, and rye soil cover
No difference from an alternative
positive
Maize–soybean intercropping reduced weed biomass at 6 and 9 WAP and harvest compared with sole maize.
Maize–soybean intercropping effect on yield productivity, weed control and diversity in northern Ghana · 2020 · compared with sole maize
Same direction

14 papers more in this group

See all 18 papers →

Glycine max · yield · Zea mays (maize)Positive and negative results

180 papers: 155 positive, 25 negative or no effect

154 papers in the same direction as this paper · 18 in the opposite direction · 7 reporting no difference from an alternative

no effect
Soybean presence did not affect maize yield in either season.
EFFECT OF VARYING MAIZE DENSITIES ON INTERCROPPED MAIZE AND SOYBEAN IN NEPAL · 2005
Opposite direction
no effect
Soybean density did not affect maize yield.
Plant Density and Soybean Maturity in a Soybean‐Maize Intercrop · 1995
Opposite direction
negative
Perennial ryegrass planted two weeks later reduced corn yield by 13% at Lamberton.
Effect of Cover Crops Alfalfa, Red Clover, and Perennial Ryegrass on Soybean Cyst Nematode Population and Soybean and Corn Yields in Minnesota · 2006
Opposite direction

176 papers more in this group

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cultivation system · weed · Zea mays (maize)Positive and negative results

10 papers: 4 positive, 6 negative or no effect

3 papers in the same direction as this paper · 6 in the opposite direction

negative
Total weed density was higher in LIS than in CS in 2 of 3 years.
Changes in weed community composition as influenced by cover crop and management system in continuous corn · 2001 · compared with CS
Opposite direction
negative
Before maize harvest, weed cover was 15 times higher in organic than intensive integrated farming.
Long‐term weed community dynamics in Swiss organic and integrated farming systems · 2008 · compared with IF int
Opposite direction
negative
Midseason weed proportion of biomass was greater under HF and ORG with CP and NT.
Low‐Input Management and Mature Conservation Tillage: Agronomic Potential in a Cool, Humid Climate · 2013
Opposite direction

6 papers more in this group

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density · weed · Zea mays (maize)Positive and negative results

33 papers: 26 positive, 7 negative or no effect

25 papers in the same direction as this paper · 6 in the opposite direction · 1 reporting no difference from an alternative

no effect
Row spacing had little effect on weed control.
Glufosinate Combinations and Row Spacing for Weed Control in Glufosinate-Resistant Corn (Zea mays)¹ · 2001
Opposite direction
no effect
Plant population had no significant effect on weed biomass.
Effect of inter-row spacing and plant population on weed dynamics and maize(Zea mays L.) yield at Zanyokwe Irrigation Scheme, Eastern Cape,South Africa · 2010
Opposite direction
no effect
Row spacing did not significantly alter weed parameters.
Influence of growing measures on weed interference and water status in maize · 2017
Opposite direction

29 papers more in this group

See all 33 papers →

cultivation system · yield · Zea mays (maize)Positive and negative results

155 papers: 110 positive, 45 negative or no effect

109 papers in the same direction as this paper · 40 in the opposite direction · 5 reporting no difference from an alternative

negative
Corn yield in the 4-yr OI strategy was 9% lower than in the 2-yr HI strategy in V1.
Organic and Other Management Strategies with Two‐ and Four‐Year Crop Rotations in Minnesota · 2003 · compared with 2‐yr HI strategy
Opposite direction
negative
Organic management reduced maize yields by 36.1% relative to the conventional system.
Yields and resilience outcomes of organic, cover crop, and conventional practices in a Mediterranean climate · 2019 · compared with conventional system
Opposite direction
negative
Organic corn yields were 31% lower than conventional corn yields.
Meteorological fluctuations define long-term crop yield patterns in conventional and organic production systems · 2017 · compared with conventional
Opposite direction

151 papers more in this group

See all 155 papers →

herbicide · weed · Zea mays (maize)Positive and negative results

406 papers: 360 positive, 46 negative or no effect

359 papers in the same direction as this paper · 36 in the opposite direction · 10 reporting no difference from an alternative

negative
GMHT management increased weed biomass in maize.
Responses of plants and invertebrate trophic groups to contrasting herbicide regimes in the Farm Scale Evaluations of genetically modified herbicide–tolerant crops · 2003 · compared with conventional treatments
Opposite direction
negative
Without herbicide, weed control was poor regardless of row spacing or population.
Influence of Narrow Row/High Population Corn (Zea mays) on Weed Control and Light Transmittance · 1995
Opposite direction
no effect
Weed diversity was little affected by treatment in all three crops except immediately after herbicide use.
Weeds in fields with contrasting conventional and genetically modified herbicide–tolerant crops. I. Effects on abundance and diversity · 2003
Opposite direction

402 papers more in this group

See all 406 papers →

herbicide · yield · Zea mays (maize)Positive and negative results

651 papers: 500 positive, 151 negative or no effect

499 papers in the same direction as this paper · 127 in the opposite direction · 24 reporting no difference from an alternative

negative
Without herbicide, yield was reduced regardless of row spacing or population.
Influence of Narrow Row/High Population Corn (Zea mays) on Weed Control and Light Transmittance · 1995
Opposite direction
negative
Lack of weed control reduced green ear yield and grain yield of corn.
Corn yield response to weed and fall armyworm controls · 2010 · compared with weed control
Opposite direction
no effect
Herbicide-treated plots had no significant corn grain yield difference from handweeded plots.
Effect of Postemergence Application Rate and Timing of Mesotrione on Corn (Zea mays) Response and Weed Control¹ · 2002 · compared with handweeded plots
Opposite direction

647 papers more in this group

See all 651 papers →

fertilization · yield · Zea mays (maize)Positive and negative results

3,908 papers: 3,485 positive, 423 negative or no effect

3,484 papers in the same direction as this paper · 338 in the opposite direction · 85 reporting no difference from an alternative

negative
If the V8 sufficiency index was below 90%, in-season nitrogen application did not attain maximum yields.
Ability for In‐Season Correction of Nitrogen Deficiency in Corn Using Chlorophyll Meters · 1997
Opposite direction
no effect
N fertilization did not significantly influence belowground NPP of corn.
Nitrogen fertilizer effects on soil carbon balances in Midwestern U.S. agricultural systems · 2009
Opposite direction
negative
Average grain yield of maize was reduced by 37% at low N (no N fertilizer) compared with high N.
Improving Nitrogen‐Use Efficiency in European Maize · 2003 · compared with HN
Opposite direction

3,904 papers more in this group

See all 3,908 papers →

Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.