Abstract
Abstract A fall‐established cereal rye ( Secale cereale L.) cover crop has potential to provide weed suppression in fields that will be planted with corn ( Zea mays L.) and/or soybean [ Glycine max (L.) Merr.], reducing the selection pressure for herbicide resistance as part of an integrated weed management approach. However, biomass from an overwintering cover crop can be limited in areas with prolonged cool‐spring growing conditions, like in the Upper Midwest region of the United States. This study was conducted to determine if a cereal rye cover crop grown in Wisconsin and terminated at the time of crop planting could provide effective levels of early‐season weed suppression in corn–soybean systems practicing no‐till soil management. Cover crop biomass, weed biomass, and weed density were assessed at two Wisconsin locations (eight site‐crop‐years total; four site‐years of each corn and soybean) in 2019 and 2020. Cereal rye biomass production at the time of crop planting ranged from 290–1,480 kg ha –1 . Overall, no‐till management with a cover crop reduced weed density by 31% and reduced weed biomass by 61% compared with no‐till without a cover crop. These results indicate that the use of a cereal rye cover crop in the Upper Midwest has potential to reduce the exclusive reliance on spring burndown herbicides in no‐till, but limited spring cover crop biomass in this region may diminish the weed‐suppressive effects from this management practice compared with other parts of the United States where higher amounts of cover crop biomass can be achieved at crop planting time.
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Claims 5
Claim · model-written summary
Cereal rye biomass at crop planting ranged from 290 to 1,480 kg ha –1.
Verbatim
e0“Cereal rye biomass production at the time of crop planting ranged from 290–1,480 kg ha –1 .”
Claim · model-written summary
A cereal rye cover crop reduced weed density by 31% compared with no cover crop in no-till corn and soybean.
- Taxon
- corn–soybean
Glycine max
Zea mays subsp. mayst0 - Treatment
- a cover crope0
- Interactor
- weede0weed
- Outcome
- weed densitye0
- Direction
- reducede0
- Value
- 31%e0
- Comparator
- no‐till without a cover crope0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Overall, no‐till management with a cover crop reduced weed density by 31% and reduced weed biomass by 61% compared with no‐till without a cover crop.”
t0“corn–soybean”
Claim · model-written summary
A cereal rye cover crop reduced weed biomass by 61% compared with no cover crop in no-till corn and soybean.
- Taxon
- corn–soybeanGlycine maxZea mays subsp. mayst0
- Treatment
- a cover crope0
- Interactor
- weede0weed
- Outcome
- weed biomasse0
- Direction
- reducede0
- Value
- 61%e0
- Comparator
- no‐till without a cover crope0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Overall, no‐till management with a cover crop reduced weed density by 31% and reduced weed biomass by 61% compared with no‐till without a cover crop.”
t0“corn–soybean”
Claim · model-written summary
The authors conclude that cereal rye cover cropping in the Upper Midwest may reduce reliance on spring burndown herbicides in no-till systems.
- Taxon
- corn–soybeanGlycine maxZea mays subsp. mayst0
- Treatment
- a cereal rye cover crope0
- Outcome
- reduce the exclusive reliance on spring burndown herbicidese0
- Setting
- Upper Midweste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the use of a cereal rye cover crop in the Upper Midwest has potential to reduce the exclusive reliance on spring burndown herbicides in no‐till”
t0“corn–soybean”
Claim · model-written summary
Limited spring cover crop biomass in this region may diminish weed suppression relative to regions with more biomass at planting.
- Taxon
- corn–soybeanGlycine maxZea mays subsp. mayst0
- Outcome
- weed‐suppressive effectse0
- Direction
- diminishe0
- Qualifier
- limited spring cover crop biomasse0
- Comparator
- other parts of the United Statese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“limited spring cover crop biomass in this region may diminish the weed‐suppressive effects from this management practice compared with other parts of the United States where higher amounts of cover crop biomass can be achieved at crop planting time”
t0“corn–soybean”
The same questions in other papers
cover crop · weed · Zea mays (maize)Results differ
35 papers in the same direction as this paper · 10 in the opposite direction · 2 reporting no difference from an alternative
- positive
- positive
- no effect
44 papers more in this group
See all 48 papers →cover crop · weed · Glycine max (soybean)Positive and negative results
18 papers in the same direction as this paper · 4 in the opposite direction · 1 reporting no difference from an alternative
- positive
- positive
- no effect
20 papers more in this group
See all 24 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.