Abstract
This study measured weed interference in soybean and corn as affected by residue management tactics following a sequence of oat and winter wheat. Residue management tactics compared were conventional tillage, no-till, and no-till plus cover crops. Treatments were split into weed-free and weed-infested conditions; prominent weeds were green and yellow foxtail and common lambsquarters. Grain yield of soybean did not differ between weed-free and weed-infested conditions with no-till, whereas weeds reduced yield 25% in the tilled system. Corn responded inconsistently to treatments, with more than 40% yield loss due to weed interference in 1 yr with all treatments. Cover crops did not improve weed management compared with no-till in either crop. Seedling emergence of the weed community differed between tillage and no-till; density of weed seedlings was fivefold higher with tillage, whereas seedling emergence was delayed in no-till. The initial flush of seedlings occurred 2 to 3 wk later in no-till compared with the tilled system. Designing rotations to include cool-season crops in a no-till system may eliminate the need for herbicides in soybean to manage weeds.
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Claims 7
Claim · model-written summary
Soybean grain yield did not differ between weed-free and weed-infested conditions under no-till.
- Taxon
- Soybean
Glycine maxt0 - Treatment
- weed-infested conditionse1
- Outcome
- Grain yielde1
- Direction
- did not differe1
- Comparator
- weed-freee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“in No-Till Soybean”
e1“Grain yield of soybean did not differ between weed-free and weed-infested conditions with no-till”
Claim · model-written summary
Weeds reduced soybean yield by 25% in the tilled system.
- Taxon
- SoybeanGlycine maxt0
- Interactor
- weedse2weed
- Outcome
- yielde2
- Direction
- reducede2
- Value
- 25%e2
- Setting
- tilled systeme2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“in No-Till Soybean”
e2“whereas weeds reduced yield 25% in the tilled system”
Claim · model-written summary
Corn yield loss due to weed interference exceeded 40% in one year with all treatments.
- Taxon
- Corn
Zea mays subsp. mayse3 - Interactor
- weede3weed
- Outcome
- yield loss due to weed interferencee3
- Value
- more than 40%e3
- Qualifier
- in 1 yr with all treatmentse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“Corn responded inconsistently to treatments, with more than 40% yield loss due to weed interference in 1 yr with all treatments”
Claim · model-written summary
Cover crops did not improve weed management compared with no-till in soybean.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- Cover cropse4
- Outcome
- weed managemente4
- Direction
- did not improvee4
- Comparator
- no-tille4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“in No-Till Soybean”
e4“Cover crops did not improve weed management compared with no-till in either crop”
Claim · model-written summary
Weed seedling density was fivefold higher under tillage than under no-till in soybean.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- tillagee5
- Interactor
- weede5weed
- Outcome
- density of weed seedlingse5
- Direction
- highere5
- Value
- fivefolde5
- Comparator
- no-tille5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“in No-Till Soybean”
e5“density of weed seedlings was fivefold higher with tillage, whereas seedling emergence was delayed in no-till”
Claim · model-written summary
The initial flush of weed seedlings occurred 2 to 3 weeks later under no-till than under tillage.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- no-tille6
- Interactor
- weed communitye7weed
- Outcome
- initial flush of seedlingse6
- Direction
- latere6
- Value
- 2 to 3 wke6
- Comparator
- tilled systeme6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“in No-Till Soybean”
e6“The initial flush of seedlings occurred 2 to 3 wk later in no-till compared with the tilled system”
e7“Seedling emergence of the weed community differed between tillage and no-till”
Claim · model-written summary
Rotations including cool-season crops in a no-till system may eliminate the need for herbicides in soybean.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- Designing rotations to include cool-season crops in a no-till systeme7
- Outcome
- need for herbicidese7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“in No-Till Soybean”
e7“Designing rotations to include cool-season crops in a no-till system may eliminate the need for herbicides in soybean to manage weeds”
The same questions in other papers
cover crop · weed · Glycine max (soybean)Positive and negative results
4 papers in the same direction as this paper · 19 reporting no difference from an alternative
- positive
- positive
- positive
20 papers more in this group
See all 24 papers →tillage · weed · Glycine max (soybean)Positive and negative results
18 papers in the same direction as this paper · 25 in the opposite direction
- positive
- positive
- positive
40 papers more in this group
See all 44 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.