Abstract
The objectives of this study were to determine how the timing of weed management treatments in winter wheat stubble affects weed control the following season and to determine if spring herbicide rates in corn can be reduced with appropriately timed stubble management practices. Field studies were conducted at two sites in Ohio between 1993 and 1995. Wheat stubble treatments consisted of glyphosate (0.84 kg ae/ha) plus 2,4-D (0.48 kg ae/ha) applied in July, August, or September, or at all three timings, and a nontreated control. In the following season, spring herbicide treatments consisted of a full rate of atrazine (1.7 kg ai/ha) plus alachlor (2.8 kg ai/ha) preemergence, a half rate of these herbicides, or no spring herbicide treatment. Across all locations, a postharvest treatment of glyphosate plus 2,4-D followed by alachlor plus atrazine at half or full rates in the spring controlled all broadleaf weeds, except giant ragweed, at least 88%. Giant foxtail control at three locations was at least 83% when a postharvest glyphosate plus 2,4-D treatment was followed by spring applications of alachlor plus atrazine at half or full rates. Weed control in treatments without alachlor plus atrazine was variable, although broadleaf control from July and August glyphosate plus 2,4-D applications was greater than from September applications. Where alachlor and atrazine were not applied, August was generally the best timing of herbicide applications to wheat stubble for reducing weed populations the following season.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 5
Claim · model-written summary
Postharvest glyphosate plus 2,4-D followed by spring alachlor plus atrazine at half or full rates controlled all broadleaf weeds except giant ragweed at least 88%
- Taxon
- Corn
Zea mays subsp. mayst0 - Treatment
- a postharvest treatment of glyphosate plus 2,4-D followed by alachlor plus atrazine at half or full ratese1
- Interactor
- broadleaf weedse1weed
- Outcome
- all broadleaf weeds, except giant ragweede1
- Direction
- controllede1
- Value
- at least 88%e1
- Setting
- two sites in Ohioe6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Weed Control in Corn (Zea mays)”
e6“Field studies were conducted at two sites in Ohio between 1993 and 1995”
e1“Across all locations, a postharvest treatment of glyphosate plus 2,4-D followed by alachlor plus atrazine at half or full rates in the spring controlled all broadleaf weeds, except giant ragweed, at least 88%”
Claim · model-written summary
Postharvest glyphosate plus 2,4-D followed by spring alachlor plus atrazine at half or full rates kept giant foxtail control at least 83% at three locations
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- postharvest glyphosate plus 2,4-D treatment was followed by spring applications of alachlor plus atrazine at half or full ratese2
- Interactor
- Giant foxtaile2weed
- Outcome
- Giant foxtail controle2
- Direction
- at leaste2
- Value
- at least 83%e2
- Setting
- at three locationse2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Weed Control in Corn (Zea mays)”
e2“Giant foxtail control at three locations was at least 83% when a postharvest glyphosate plus 2,4-D treatment was followed by spring applications of alachlor plus atrazine at half or full rates”
Claim · model-written summary
Weed control in treatments without alachlor plus atrazine was variable
- Taxon
- CornZea mays subsp. mayst0
- Outcome
- Weed control in treatments without alachlor plus atrazinee3
- Qualifier
- variablee3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Weed Control in Corn (Zea mays)”
e3“Weed control in treatments without alachlor plus atrazine was variable”
Claim · model-written summary
Broadleaf control from July and August glyphosate plus 2,4-D applications was greater than from September applications
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- July and August glyphosate plus 2,4-D applicationse4
- Outcome
- broadleaf controle4
- Direction
- greatere4
- Comparator
- September applicationse4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Weed Control in Corn (Zea mays)”
e4“broadleaf control from July and August glyphosate plus 2,4-D applications was greater than from September applications”
Claim · model-written summary
Where alachlor and atrazine were not applied, August was generally the best timing of herbicide applications to wheat stubble for reducing weed populations the following season
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- herbicide applications to wheat stubblee5
- Outcome
- reducing weed populations the following seasone5
- Direction
- beste5
- Qualifier
- Where alachlor and atrazine were not appliede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Weed Control in Corn (Zea mays)”
e5“Where alachlor and atrazine were not applied, August was generally the best timing of herbicide applications to wheat stubble for reducing weed populations the following season”
The same questions in other papers
atrazine · weed · Zea mays (maize)Results differ
196 papers in the same direction as this paper · 5 in the opposite direction
- negative
- negative
- negative
198 papers more in this group
See all 202 papers →alachlor · control · Zea mays (maize)Positive and negative results
8 papers in the same direction as this paper · 3 in the opposite direction
- negative
- no effect
- no effect
8 papers more in this group
See all 12 papers →Triticum aestivum · weed · Zea mays (maize)Positive and negative results
12 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
10 papers more in this group
See all 14 papers →2,4-D · control · Zea mays (maize)Positive and negative results
14 papers in the same direction as this paper · 4 in the opposite direction
- negative
- negative
- no effect
15 papers more in this group
See all 19 papers →2,4-D · weed · Zea mays (maize)Positive and negative results
30 papers in the same direction as this paper · 4 in the opposite direction · 1 reporting no difference from an alternative
- negative
- negative
- negative
32 papers more in this group
See all 36 papers →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
- negative
- negative
- no effect
37 papers more in this group
See all 41 papers →glyphosate · control · Zea mays (maize)Positive and negative results
35 papers in the same direction as this paper · 5 in the opposite direction
- positive
- no effect
- negative
37 papers more in this group
See all 41 papers →atrazine · control · Zea mays (maize)Positive and negative results
68 papers in the same direction as this paper · 15 in the opposite direction · 2 reporting no difference from an alternative
- negative
- negative
- no effect
82 papers more in this group
See all 86 papers →8 of 10 groups shown: named compounds and organisms first, then groups whose results differ (checked claim by claim), then those with positive and negative results, then the smaller groups.
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.