Abstract
Field studies were conducted in 1987 and 1988 to evaluate the control and competitiveness of common lambsquarters in soybeans when present at four densities and when removed at four time intervals. Common lambsquarters were removed by hand or treated with a postemergence herbicide application of bentazon plus acifluorfen. Common lambsquarters could remain 10 weeks following soybean emergence before a 20% soybean yield reduction occurred when weeds were removed by hand. When treatment was attempted with postemergence herbicides, a 20% yield reduction occurred in 1987 if application was not made prior to 5 weeks after emergence. In 1988, all postemergence herbicide applications failed to control lambsquarters due to drought conditions. The postemergence herbicide's degree of control was reflected in the number of remaining lambsquarters plants. Common lambsquarters seed production and germination was not influenced by postemergence herbicide application. There was a strong correlation between dry weight of uncontrolled common lambsquarters plants and seed produced per plant.
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 6
Claim · model-written summary
Hand removal after 10 weeks of lambsquarters presence corresponded to a 20% soybean yield reduction.
- Taxon
- soybean
Glycine maxe0 - Treatment
- weeds were removed by hande0
- Interactor
- Common lambsquarters
Chenopodium albume0weed - Outcome
- soybean yielde0
- Direction
- reductione0
- Value
- 20%e0
- Qualifier
- 10 weeks following soybean emergencee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Common lambsquarters could remain 10 weeks following soybean emergence before a 20% soybean yield reduction occurred when weeds were removed by hand.”
Claim · model-written summary
In 1987, postemergence herbicide application after five weeks was associated with 20% soybean yield reduction.
- Taxon
- SoybeansGlycine maxt0
- Treatment
- postemergence herbicidese0
- Interactor
- Common LambsquartersChenopodium albumt0weed
- Outcome
- yielde0
- Direction
- reductione0
- Value
- 20%e0
- Qualifier
- in 1987 if application was not made prior to 5 weeks after emergencee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When treatment was attempted with postemergence herbicides, a 20% yield reduction occurred in 1987 if application was not made prior to 5 weeks after emergence.”
t0“Common Lambsquarters (Chenopodium album) Competition and Time of Removal in Soybeans (Glycine max)”
Claim · model-written summary
All 1988 postemergence herbicide applications failed to control lambsquarters during drought.
- Taxon
- SoybeansGlycine maxt0
- Treatment
- postemergence herbicide applicationse0
- Interactor
- lambsquarterse0weed
- Outcome
- control lambsquarterse0
- Direction
- failede0
- Qualifier
- drought conditionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In 1988, all postemergence herbicide applications failed to control lambsquarters due to drought conditions.”
t0“Soybeans (Glycine max)”
Claim · model-written summary
Herbicide control was reflected in the number of remaining lambsquarters plants.
- Taxon
- SoybeansGlycine maxt0
- Treatment
- postemergence herbicidee0
- Interactor
- lambsquarterse0weed
- Outcome
- number of remaining lambsquarters plantse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The postemergence herbicide's degree of control was reflected in the number of remaining lambsquarters plants.”
t0“Soybeans (Glycine max)”
Claim · model-written summary
Postemergence herbicide application did not influence lambsquarters seed production or germination.
- Taxon
- SoybeansGlycine maxt0
- Treatment
- postemergence herbicide applicatione0
- Interactor
- Common lambsquartersChenopodium albume0weed
- Outcome
- Common lambsquarters seed production and germinatione0
- Direction
- not influencede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Common lambsquarters seed production and germination was not influenced by postemergence herbicide application.”
t0“Soybeans (Glycine max)”
Claim · model-written summary
Uncontrolled lambsquarters dry weight was strongly correlated with seed production per plant.
- Taxon
- SoybeansGlycine maxt0
- Interactor
- common lambsquartersChenopodium albume0weed
- Outcome
- seed produced per plante0
- Qualifier
- dry weight of uncontrolled common lambsquarters plantse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was a strong correlation between dry weight of uncontrolled common lambsquarters plants and seed produced per plant.”
t0“Soybeans (Glycine max)”
The same questions in other papers
herbicide · Chenopodium album · Glycine max (soybean)Positive and negative results
4 papers in the same direction as this paper · 8 in the opposite direction
- positive
- positive
- positive
9 papers more in this group
See all 13 papers →herbicide · control · Glycine max (soybean)Positive and negative results
23 papers in the same direction as this paper · 99 in the opposite direction
- positive
- positive
- positive
119 papers more in this group
See all 123 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.