Abstract
Interference studies utilizing natural infestations of broadleaf signalgrass [ Brachiaria platyphylla (Griseb.) Nash] in peanuts [ Arachis hypogaea (L.) ‘Florigiant′] were conducted at two sites in 1978 and repeated at the same sites in 1979. Full-season interference from broadleaf signalgrass populations of 8, 16, and 1050 plants/10 m of row reduced seed yields 14, 28, and 69%, respectively. Linear regression analysis showed that slightly less than 4 plants/10 m of row significantly reduced yields. Broadleaf signalgrass interference with peanuts for 6 weeks or less after planting did not reduce seed yields; however, interference for 8 weeks or longer after planting did. Peanuts kept weed-free for 6 weeks or more after planting had seed yields equal to peanuts kept weed-free all season. Full-season broadleaf signalgrass interference reduced mature peanut forage yields 64%, but peanut interference only reduced broadleaf signalgrass forage yield 10%.
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Claims 9
Claim · model-written summary
Full-season signalgrass density of 8 plants/10 m row reduced peanut seed yield 14%.
- Treatment
- 8e0
- Interactor
- broadleaf signalgrass
Urochloa platyphyllae0weed - Outcome
- seed yieldse0
- Direction
- reducede0
- Value
- 14e0
Not reportedTaxonComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Full-season interference from broadleaf signalgrass populations of 8, 16, and 1050 plants/10 m of row reduced seed yields 14, 28, and 69%, respectively”
Claim · model-written summary
Full-season signalgrass density of 16 plants/10 m row reduced peanut seed yield 28%.
- Treatment
- 16e0
- Interactor
- broadleaf signalgrassUrochloa platyphyllae0weed
- Outcome
- seed yieldse0
- Direction
- reducede0
- Value
- 28e0
Not reportedTaxonComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Full-season interference from broadleaf signalgrass populations of 8, 16, and 1050 plants/10 m of row reduced seed yields 14, 28, and 69%, respectively”
Claim · model-written summary
Full-season signalgrass density of 1050 plants/10 m row reduced peanut seed yield 69%.
- Treatment
- 1050 plants/10 m of rowe0
- Interactor
- broadleaf signalgrassUrochloa platyphyllae0weed
- Outcome
- seed yieldse0
- Direction
- reducede0
- Value
- 69%e0
Not reportedTaxonComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Full-season interference from broadleaf signalgrass populations of 8, 16, and 1050 plants/10 m of row reduced seed yields 14, 28, and 69%, respectively”
Claim · model-written summary
Fewer than four signalgrass plants per 10 m row significantly reduced yields.
Not reportedTaxon
Verbatim
e0“slightly less than 4 plants/10 m of row significantly reduced yields”
Claim · model-written summary
Signalgrass interference for six weeks or less did not reduce peanut seed yield.
- Taxon
- peanuts
Arachis hypogaeae0 - Treatment
- Broadleaf signalgrass interferencee0
- Interactor
- Broadleaf signalgrassUrochloa platyphyllae0weed
- Outcome
- seed yieldse0
- Direction
- did not reducee0
- Qualifier
- 6 weeks or less after plantinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Broadleaf signalgrass interference with peanuts for 6 weeks or less after planting did not reduce seed yields”
Claim · model-written summary
Signalgrass interference for eight weeks or longer reduced peanut seed yields.
- Treatment
- interference for 8 weeks or longer after plantinge0
Not reportedTaxonComparatorOutcomeDirection
Verbatim
e0“interference for 8 weeks or longer after planting did”
Claim · model-written summary
Keeping peanuts weed-free for at least six weeks gave yields equal to all-season weed-free peanuts.
- Taxon
- PeanutsArachis hypogaeae0
- Treatment
- weed-free for 6 weeks or more after plantinge0
- Outcome
- seed yieldse0
- Direction
- equale0
- Comparator
- peanuts kept weed-free all seasone0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Peanuts kept weed-free for 6 weeks or more after planting had seed yields equal to peanuts kept weed-free all season”
Claim · model-written summary
Full-season signalgrass interference reduced mature peanut forage yield 64%.
- Taxon
- peanutArachis hypogaeae0
- Treatment
- Full-season broadleaf signalgrass interferencee0
- Interactor
- broadleaf signalgrassUrochloa platyphyllae0weed
- Outcome
- mature peanut forage yieldse0
- Direction
- reducede0
- Value
- 64%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Full-season broadleaf signalgrass interference reduced mature peanut forage yields 64%”
Claim · model-written summary
Peanut interference reduced signalgrass forage yield 10%.
- Taxon
- peanutArachis hypogaeae0
- Treatment
- peanut interferencee0
- Interactor
- broadleaf signalgrassUrochloa platyphyllae0weed
- Outcome
- broadleaf signalgrass forage yielde0
- Direction
- reducede0
- Value
- 10%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“peanut interference only reduced broadleaf signalgrass forage yield 10%”
The same questions in other papers
Urochloa platyphylla · yield · Arachis hypogaea (peanut)Results agree
1 paper in the same direction as this paper
- no effect
herbicide · yield · Arachis hypogaea (peanut)Positive and negative results
57 papers in the same direction as this paper · 172 reporting no difference from an alternative
- positive
- positive
- positive
226 papers more in this group
See all 230 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.