Abstract
Experiments were conducted at three locations to evaluate the efficacy of fall and spring herbicide treatments for vegetation control and enhancement of alfalfa ( Medicago sativa L.) establishment. on a sward dominated by quackgrass [ Agropyron repens (L.) Beauv.], fall and spring glyphosate [ N- (phosphonomethyl) glycine] treatments were equally effective in reducing competition from quackgrass and in establishing alfalfa. on a mixed grass sward, spring and fall glyphosate treatment resulted in similar alfalfa yields with early spring seeding; however, alfalfa yields were lower with delayed seeding on fall-treated plots, compared with spring treatment, because of greater weed competition. Pronamide [3,5-dichloro( N -1,1-dimethyl-2-propynyl) benzamide] applied in the fall controlled perennial grasses, and when it was followed by paraquat (1,1′-dimethyl-4,4′-bipyridinium ion) in the spring controlled broadleaf weeds as well, resulting in greater alfalfa yields compared with pronamide alone. Alfalfa established more slowly in the paraquat-treated and check plots, than in glyphosate-treated plots.
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Claims 9
Claim · model-written summary
Fall and spring glyphosate were equally effective at reducing quackgrass competition.
- Treatment
- fall and spring glyphosatee0
- Interactor
- quackgrasse0weed
- Outcome
- competition from quackgrasse0
- Direction
- reducinge0
- Comparator
- fall and spring glyphosatee0
Not reportedTaxon
Verbatim
e0“fall and spring glyphosate [ N- (phosphonomethyl) glycine] treatments were equally effective in reducing competition from quackgrass”
Claim · model-written summary
Fall and spring glyphosate were equally effective in establishing alfalfa.
- Taxon
- alfalfa
Medicago sativae0 - Treatment
- fall and spring glyphosatee0
- Outcome
- establishing alfalfae0
- Direction
- equally effectivee0
- Comparator
- fall and spring glyphosatee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“fall and spring glyphosate [ N- (phosphonomethyl) glycine] treatments were equally effective in reducing competition from quackgrass and in establishing alfalfa.”
Claim · model-written summary
Fall and spring glyphosate gave similar alfalfa yields with early spring seeding.
- Taxon
- alfalfaMedicago sativae0
- Treatment
- spring and fall glyphosate treatmente0
- Outcome
- alfalfa yieldse0
- Direction
- similare0
- Qualifier
- early spring seedinge0
- Comparator
- spring and fall glyphosate treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“spring and fall glyphosate treatment resulted in similar alfalfa yields with early spring seeding”
Claim · model-written summary
Delayed seeding on fall-treated plots reduced alfalfa yield relative to spring treatment.
- Taxon
- alfalfaMedicago sativae0
- Treatment
- delayed seeding on fall-treated plotse0
- Interactor
- weede0weed
- Outcome
- alfalfa yieldse0
- Direction
- lowere0
- Comparator
- spring treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“alfalfa yields were lower with delayed seeding on fall-treated plots, compared with spring treatment, because of greater weed competition.”
Claim · model-written summary
Fall pronamide controlled perennial grasses.
- Taxon
- AlfalfaMedicago sativat0
- Treatment
- Pronamidee0
- Interactor
- perennial grassese0weed
- Outcome
- perennial grassese0
- Direction
- controllede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pronamide [3,5-dichloro( N -1,1-dimethyl-2-propynyl) benzamide] applied in the fall controlled perennial grasses”
t0“Alfalfa”
Claim · model-written summary
Spring paraquat after fall pronamide controlled broadleaf weeds.
- Taxon
- AlfalfaMedicago sativat0
- Treatment
- paraquate0
- Interactor
- broadleaf weedse0weed
- Outcome
- broadleaf weedse0
- Direction
- controllede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“when it was followed by paraquat (1,1′-dimethyl-4,4′-bipyridinium ion) in the spring controlled broadleaf weeds as well”
t0“Alfalfa”
Claim · model-written summary
Pronamide followed by paraquat increased alfalfa yield relative to pronamide alone.
- Taxon
- alfalfaMedicago sativae0
- Treatment
- paraquate0
- Outcome
- alfalfa yieldse0
- Direction
- greatere0
- Comparator
- pronamide alonee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“when it was followed by paraquat (1,1′-dimethyl-4,4′-bipyridinium ion) in the spring controlled broadleaf weeds as well, resulting in greater alfalfa yields compared with pronamide alone.”
Claim · model-written summary
Alfalfa established more slowly in paraquat plots than glyphosate plots.
- Taxon
- AlfalfaMedicago sativae0
- Treatment
- paraquat-treatede0
- Outcome
- Alfalfa establishede0
- Direction
- more slowlye0
- Comparator
- glyphosate-treated plotse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Alfalfa established more slowly in the paraquat-treated and check plots, than in glyphosate-treated plots.”
Claim · model-written summary
Alfalfa established more slowly in check plots than glyphosate plots.
- Taxon
- AlfalfaMedicago sativae0
- Treatment
- check plotse0
- Outcome
- Alfalfa establishede0
- Direction
- more slowlye0
- Comparator
- glyphosate-treated plotse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Alfalfa established more slowly in the paraquat-treated and check plots, than in glyphosate-treated plots.”
The same questions in other papers
paraquat · yield · Medicago sativa (alfalfa)Results differ
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- positive
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4 papers in the same direction as this paper · 3 in the opposite direction
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- negative
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See all 8 papers →sowing time · yield · Medicago sativa (alfalfa)Positive and negative results
5 papers in the same direction as this paper · 9 in the opposite direction
- positive
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See all 15 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.