Herbicides and Cereal Rye for Palmer Amaranth Management in Corn and Soybean

atrazine · weed · Zea mays (maize)Results differ

196 papers in the same direction as this paper · 5 in the opposite direction

1. negative
   Reducing atrazine and metolachlor to one-fourth the rate in the absence of cover crop reduced weed control in three 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

2. negative
   Early preplant atrazine and/or metolachlor gave reduced late season weed control in no till corn compared with preemergence or sequential application.

   Early Preplant Atrazine and Metolachlor in Conservation Tillage Corn (Zea mays) · 1991 · compared with preemergence and early preplant/preemergence sequential treatments

   Opposite direction

3. negative
   Atrazine applied at 21 DAS failed to control the weeds satisfactorily.

   Atrazine as Post-emergence Herbicide for Weed Control in Maize (Zea mays L.) · 1994

   Opposite direction

198 papers more in this group

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

5 papers in the same direction as this paper · 1 in the opposite direction

1. negative
   At 76-cm rows and 1× population, quarter-rate herbicide gave less weed control than standard herbicide in two of four years.

   Influence of Narrow Row/High Population Corn (Zea mays) on Weed Control and Light Transmittance · 1995 · compared with standard treatment

   Opposite direction

2. positive
   Reduced soil herbicide followed by reduced postemergence herbicides and adjuvants gave the most efficacious weed control.

   Efficacy of Reduced Rates of Soil-Applied Dimethenamid-P and Pendimethalin Mixture Followed by Postemergence Herbicides in Maize · 2020

   Same direction

3. positive
   PRE followed by POST herbicides increased weed control, corn yield and return.

   Assessment of Weed Control Strategies for Corn in the North-Central United States · 2004

   Same direction

3 papers more in this group

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

32 papers in the same direction as this paper · 5 in the opposite direction · 3 reporting no difference from an alternative

1. negative
   Weed densities were greater under the minimum treatment than under the IWM or conventional treatments in all crops.

   Evaluation of alternative weed management systems in a modified no-tillage corn–soybean–winter wheat rotation: weed densities, crop yield, and economics · 2002 · compared with IWM or conventional treatment

   Opposite direction

2. negative
   Glyphosate alone reduced weed control in crimson clover.

   Control of Legume Cover Crops in No-Till Corn (Zea mays) and Cotton (Gossypium hirsutum) · 1990

   Opposite direction

3. no effect
   Adding Crop Booster to glyphosate did not affect weed control or corn yield in the main comparison.

   Effect of Biostimulants Added to Postemergence Herbicides in Corn, Oats and Winter Wheat · 2015

   Opposite direction

37 papers more in this group

glyphosate · weed · Glycine max (soybean)Positive and negative results

41 papers in the same direction as this paper · 8 in the opposite direction · 6 reporting no difference from an alternative

1. no effect
   Glyphosate rate did not affect weed control, yield or net return.

   Weed Control Programs in Drilled Glyphosate-Resistant Soybean¹ · 2000

   Opposite direction

2. no effect
   Adding graminicides and adjuvants to glyphosate did not affect glyphosate weed control.

   Control of Volunteer Glyphosate-Resistant Corn (Zea mays) in Glyphosate-Resistant Soybean (Glycine max) · 2006

   Opposite direction

3. negative
   Single-application reduced-rate glyphosate showed a trend of decreased weed control, yield and net income.

   Weed Management with Reduced Rates of Glyphosate in No-Till, Narrow-Row, Glyphosate-Resistant Soybean (Glycine max) · 1999

   Opposite direction

52 papers more in this group

herbicide · weed · Glycine max (soybean)Results agree

3 papers in the same direction as this paper

1. positive
   Herbicide systems with or without cultivation controlled more soybean weeds than three cultivations alone.

   Soybean Weed Control Systems in Two Southern Coastal Plain Soils · 1975 · compared with only three cultivations

   Same direction

2. positive
   Residual plus postemergence herbicide gave the largest reduction in weed density.

   Integration of Cover Crops Into Midwest Corn-Soybean Cropping Systems and Potential for Weed Suppression · 2019

   Same direction

3. positive
   Pre-emergence herbicides plus two-time divided post-emergence band and broadcast application with inter-row cultivation gave the most reliable control of all weeds, with efficiency above 95%.

   The effect of band application of herbicides and inter-row cultivation on the fresh biomass of broadleaf weeds in soybean · 2023

   Same direction

herbicide · weed · Glycine max (soybean)Positive and negative results

257 papers in the same direction as this paper · 26 in the opposite direction · 13 reporting no difference from an alternative

1. negative
   Single reduced-rate herbicide applications gave visual weed control slightly lower to full rates.

   Integrating Reduced Rates of Postemergence Herbicides and Cultivation for Broadleaf Weed Control in Soybeans (Glycine max) · 1990 · compared with full rates

   Opposite direction

2. negative
   One-pass POST programs had up to 59% lower annual grass and broadleaf control than PRE followed by POST or two-pass POST.

   Influence of Herbicide Programs on Weed Management in Soybean with Resistance to Glufosinate and 2,4-D · 2013 · compared with PRE followed by (fb) POST or two-pass POST programs

   Opposite direction

3. negative
   Weed control was generally reduced for applications at 6:00 A.M., 9:00 P.M., and midnight.

   The Effect of Time of Day on the Activity of Postemergence Soybean Herbicides · 2013

   Opposite direction

293 papers more in this group

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

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

1. 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

2. 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

3. 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