Abstract
Abstract Growers have been experimenting with cover crop termination timings to maximize weed suppression and potentially reduce herbicide inputs in soybean [ Glycine max (L.) Merr.]. A field study was replicated three times from 2018 through 2021 in South Charleston, OH, to evaluate different management strategies involving a cereal rye ( Secale cereale L.) cover crop. The objectives were to determine the effects of cereal rye seeding rate (0, 50, and 100 kg ha −1 ), management program (preplant, postplant, and delayed), and soybean residual herbicide (flumioxazin + chlorimuron ethyl and no herbicide) on cover crop, weed, and soybean parameters. The preplant program consisted of cereal rye terminated 7 d before planting (DBP) + a postemergence application. The postplant program consisted of cereal rye terminated 7 d after planting (DAP) + a postemergence application. In the delayed program, saflufenacil was applied in April and cereal rye was terminated 21 DAP, and there was no postemergence application. Giant foxtail ( Setaria faberi Herrm.) density was reduced by the presence of cereal rye, averaged over other factors, regardless of seeding rate. Cereal rye seeding rate did not affect giant ragweed ( Ambrosia trifida L.) density. The delayed management program was generally associated with the lowest weed density, but weed density was often similar in the postplant program. Setaria faberi density was lower in treatments that included a residual herbicide. Residual soybean herbicide use did not affect density of A. trifida . Terminating cereal rye after soybean planting resulted in increased soybean yield in 2019 and reduced yield in 2020, compared with preplant rye termination. These data suggest that adjusting the cereal rye management program may have a greater effect on weed suppression than adjustments to seeding rate. Delaying termination of cereal rye can aid in the suppression of weeds, but a comprehensive herbicide program was necessary to provide adequate (>85%) weed control.
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Claims 10
Claim · model-written summary
Cereal rye presence reduced giant foxtail density regardless of seeding rate.
- Taxon
- soybean
Glycine maxt0 - Treatment
- presence of cereal ryee0
- Interactor
- Giant foxtaile0weed
- Outcome
- Giant foxtail ( Setaria faberi Herrm.) densitye0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Giant foxtail ( Setaria faberi Herrm.) density was reduced by the presence of cereal rye, averaged over other factors, regardless of seeding rate.”
t0“soybean”
Claim · model-written summary
Rye seeding rate did not affect giant ragweed density.
- Taxon
- soybeanGlycine maxt0
- Treatment
- Cereal rye seeding ratee0
- Interactor
- giant ragweed
.jpg?width=60)
Ambrosia trifidae0weed - Outcome
- giant ragweed ( Ambrosia trifida L.) densitye0
- Direction
- did not affecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“Cereal rye seeding rate did not affect giant ragweed ( Ambrosia trifida L.) density.”
t0“soybean”
Claim · model-written summary
Delayed management generally had the lowest weed density.
- Taxon
- soybeanGlycine maxt0
- Treatment
- delayed management programe0
- Interactor
- weede0weed
- Outcome
- weed densitye0
- Direction
- loweste0
- Comparator
- postplant programe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The delayed management program was generally associated with the lowest weed density, but weed density was often similar in the postplant program.”
t0“soybean”
Claim · model-written summary
Residual herbicide treatments lowered Setaria faberi density.
- Taxon
- soybeanGlycine maxt0
- Treatment
- residual herbicidee0
- Interactor
- Setaria faberi
Setaria faberie0weed - Outcome
- Setaria faberi densitye0
- Direction
- lowere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Setaria faberi density was lower in treatments that included a residual herbicide.”
t0“soybean”
Claim · model-written summary
Residual soybean herbicide did not affect A. trifida density.
- Taxon
- soybeanGlycine maxe0
- Treatment
- Residual soybean herbicidee0
- Interactor
- A. trifidaAmbrosia trifidae0weed
- Outcome
- density of A. trifidae0
- Direction
- did not affecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Residual soybean herbicide use did not affect density of A. trifida .”
Claim · model-written summary
Postplant rye termination increased soybean yield in 2019 versus preplant termination.
- Taxon
- soybeanGlycine maxe0
- Treatment
- Terminating cereal rye after soybean plantinge0
- Outcome
- soybean yielde0
- Direction
- increasede0
- Qualifier
- 2019e0
- Comparator
- preplant rye terminatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Terminating cereal rye after soybean planting resulted in increased soybean yield in 2019 and reduced yield in 2020, compared with preplant rye termination.”
Claim · model-written summary
Postplant rye termination reduced soybean yield in 2020 versus preplant termination.
- Taxon
- soybeanGlycine maxe0
- Treatment
- Terminating cereal rye after soybean plantinge0
- Outcome
- soybean yielde0
- Direction
- reducede0
- Qualifier
- 2020e0
- Comparator
- preplant rye terminatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Terminating cereal rye after soybean planting resulted in increased soybean yield in 2019 and reduced yield in 2020, compared with preplant rye termination.”
Claim · model-written summary
Rye management program may affect weed suppression more than seeding rate changes.
- Taxon
- soybeanGlycine maxt0
- Outcome
- adjusting the cereal rye management programe0
- Comparator
- adjustments to seeding ratee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“These data suggest that adjusting the cereal rye management program may have a greater effect on weed suppression than adjustments to seeding rate.”
t0“soybean”
Claim · model-written summary
Delaying rye termination can help suppress weeds.
- Taxon
- soybeanGlycine maxt0
- Interactor
- weedse0weed
- Outcome
- Delaying termination of cereal ryee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Delaying termination of cereal rye can aid in the suppression of weeds, but a comprehensive herbicide program was necessary to provide adequate (>85%) weed control.”
t0“soybean”
Claim · model-written summary
A comprehensive herbicide program was needed for adequate weed control above 85%.
- Taxon
- soybeanGlycine maxt0
- Interactor
- weedse0weed
- Outcome
- comprehensive herbicide programe0
- Value
- >85%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Delaying termination of cereal rye can aid in the suppression of weeds, but a comprehensive herbicide program was necessary to provide adequate (>85%) weed control.”
t0“soybean”
The same questions in other papers
herbicide · Ambrosia trifida · Glycine max (soybean)Positive and negative results
7 in the opposite direction
- positive
- positive
- positive
4 papers more in this group
See all 8 papers →herbicide · Setaria faberi · Glycine max (soybean)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
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.