Intervention effectmodel-written summary

Metolachlor plus atrazine with supplementary hoe weeding gave higher economic returns.

A claim from Evaluation of herbicide mixtures and manual weed control methods in maize ( Zea mays L.) production in the southern guinea agro-ecology of Nigeria · 2017

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Metolachlor plus atrazine with supplementary hoe weeding gave higher economic returns.

Taxon
maizeZea mayse0
Treatment
metolachlor + atrazinee0
Outcome
economic returnse0
Direction
highere0

Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier

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

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

Verbatim

e0

“metolachlor + atrazine and pendimethalin + atrazine at 1.0 + 2.0 kg a.i./ha plus one SHW at 6 WAS significantly reduced weed infestation and gave higher maize grain yield and economic returns”

✓ located verbatim in the source · abstract, characters 886–1077

Title

Evaluation of herbicide mixtures and manual weed control methods in maize ( Zea mays L.) production in the southern guinea agro-ecology of Nigeria

Emmanuel Oyamedan Imoloame Journal of Tropical Agriculture 2017

Other claims from this paper (6)

Record rev-99f9b2d808cf5cefe910cf42e5a7020b4cc98d6fade3cd84e2a5d533a451c2ff · schema claims-v0.9 · position 5 in the model’s answer

metolachlor · yield · Zea mays (maize)Results differ

24 papers: 19 positive, 5 negative or no effect

18 papers in the same direction as this claim · 5 in the opposite direction

  1. no effect
    Sweet corn yields at Blackville and Tifton were similar between the half and full rates of atrazine plus S-metolachlor after wild radish or rye cover crops.

    Use of Wild Radish (Raphanus raphanistrum) and Rye Cover Crops for Weed Suppression in Sweet Corn · 2008

    Opposite direction

  2. negative
    Reducing atrazine and metolachlor to one-fourth the rate in the absence of cover crop reduced corn yield in two of four years compared with the standard treatment.

    Reduced-Herbicide Weed Management Systems for No-Tillage Corn (Zea mays) in a Hairy Vetch (Vicia villosa) Cover Crop · 1993 · compared with the standard treatment

    Opposite direction

  3. no effect
    Hairy vetch cover yields did not differ with or without atrazine and metolachlor.

    Cover Crop Management and Weed Suppression in No-tillage Sweet Corn Production · 2004 · compared with without atrazine and metolachlor

    Opposite direction

  4. negative
    S-metolachlor-treated weed interference reduced corn yield by 33% relative to the weed-free control.

    Weed Control in Corn and Soybean with Group 15 (VLCFA Inhibitor) Herbicides Applied Preemergence · 2019 · compared with weed-free control

    Opposite direction

  5. negative
    Metolachlor plus atrazine occasionally reduced corn grain yields.

    Influence of Weed Control on Weed Population in Ridge-till Corn (Zea mays) · 1996

    Opposite direction

  6. positive
    Kernel weight, kernel number and grain yield increased with higher mulch levels and 0.5 and 1.0X metolachlor rates as weed competition was reduced.

    Influence of Wheat (Triticum aestivum) Straw Mulch and Metolachlor on Corn (Zea mays) Growth and Yield · 1994

    Same direction

  7. positive
    Sweet corn yields at half rates of atrazine and metolachlor equalled yields at full rates regardless of cover crop.

    Weed Control and Sweet Corn (Zea maysvar.rugosa) Response in a No-till System with Cover Crops · 1996 · compared with the full rates

    Same direction

  8. positive
    The metolachlor mixture plus hoe weeding increased maize grain yield and economic returns.

    Evaluation of herbicide mixtures and manual weed control method in maize (Zea maysL.) production in the Southern Guinea agro-ecology of Nigeria · 2017

    Same direction

15 papers more in this group

See all 24 papers →

atrazine · yield · Zea mays (maize)Results differ

240 papers: 205 positive, 35 negative or no effect

204 papers in the same direction as this claim · 29 in the opposite direction · 6 reporting no difference from an alternative

  1. negative
    Corn grain yield fell 39% in year five where atrazine had been discontinued.

    Weed Seed Decline in Irrigated Soil after Six Years of Continuous Corn(Zea mays)and Herbicides · 1984

    Opposite direction

  2. no effect
    Sweet corn yields at Blackville and Tifton were similar between the half and full rates of atrazine plus S-metolachlor after wild radish or rye cover crops.

    Use of Wild Radish (Raphanus raphanistrum) and Rye Cover Crops for Weed Suppression in Sweet Corn · 2008

    Opposite direction

  3. negative
    Reducing atrazine and metolachlor to one-fourth the rate in the absence of cover crop reduced corn yield in two of four years compared with the standard treatment.

    Reduced-Herbicide Weed Management Systems for No-Tillage Corn (Zea mays) in a Hairy Vetch (Vicia villosa) Cover Crop · 1993 · compared with the standard treatment

    Opposite direction

  4. no effect
    Hairy vetch cover yields did not differ with or without atrazine and metolachlor.

    Cover Crop Management and Weed Suppression in No-tillage Sweet Corn Production · 2004 · compared with without atrazine and metolachlor

    Opposite direction

  5. no effect
    Rimsulfuron applied with atrazine or dicamba, in tank mixture or sequentially, gave corn yield similar to rimsulfuron applied alone.

    Dicamba and Atrazine Antagonism on Sulfonylurea Herbicides Used for Johnsongrass (Sorghum halepense) Control in Corn (Zea mays)1 · 2001 · compared with that applied alone

    Opposite direction

  6. no effect
    Handweeding and atrazine gave similar grain yields with tine cultivation when weeds were controlled within 14 days of emergence.

    Use of Tine-tillage, with Atrazine Weed Control, to Permit Earlier Planting of Maize by Smallholder Farmers in Zimbabwe · 1992 · compared with Handweeding

    Opposite direction

  7. no effect
    Atrazine, cyanazine, alachor, linuron and their combinations had no significant effect on corn yields.

    Planting Corn in Sod and Small Grain Residues with Minimum Tillage1 · 1976

    Opposite direction

  8. negative
    Yield fell at all POST timings with atrazine alone or no PRE herbicide.

    Effect of Residual Herbicide and Postemergence Application Timing on Weed Control and Yield in Glyphosate-Resistant Corn · 2011 · compared with absence of PRE herbicide

    Opposite direction

231 papers more in this group

See all 240 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.