Abstract
Abstract Mayweed chamomile ( Anthemis cotula L.) is a cool‐season annual weed that germinates during March and matures by mid‐May in the southeastern United States. The economic importance of this weed in the pasture ecosystem has not been determined. The objectives of this study were: (i) to determine the forage quality of mayweed chamomile foliage; (ii) to survey the potential allelopathic influence of mayweed chamomile tissue extract on the development of certain forage species; and (iii) to evaluate herbicides for the control of this weed. The in vitro dry matter digestibility of mayweed chamomile ranged from 630 to 790 g kg −1 , with the highest values residing in foliage harvested during the vegetative stage of plant development. Results of laboratory bioassays and growth chamber experiments indicated that water extracts of mayweed chamomile leaf material are potentially allelopathic to alfalfa ( Medicago sativa L.) and Italian ryegrass ( Lolium multiflorum Lam.) seedlings. Leaf tissue mixed in potting soil significantly reduced alfalfa and Italian ryegrass plant development. The extract and tissue concentrations used in this research were estimated to be similar to concentrations expected to occur within the pasture ecosystem. Paraquat (1,1'‐dimethyl‐4,4'‐bipyridinium ion) at 0.6 kg a.i. ha −1 and glyphosate [ N ‐(phosphonomethyl) glycine] at 1.2 and 2.4 kg a.i. ha −1 controlled mayweed chamomile in sericea lespedeza [ Lespedeza cuneata (Dumont) G. Don] and bermudagrass [ Cynodon dactylon (L.) Pers.] forage systems.
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Claims 7
Claim · model-written summary
Mayweed chamomile foliage digestibility ranged from 630 to 790 g kg−1 and was highest vegetatively.
Verbatim
e0“The in vitro dry matter digestibility of mayweed chamomile ranged from 630 to 790 g kg −1 , with the highest values residing in foliage harvested during the vegetative stage of plant development”
Claim · model-written summary
Mayweed leaf water extracts were potentially allelopathic to alfalfa seedlings.
- Taxon
- alfalfa
Medicago sativae0 - Organ / stage
- seedlingse0
- Interactor
- mayweed chamomilee0weed
- Outcome
- potentially allelopathice0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“water extracts of mayweed chamomile leaf material are potentially allelopathic to alfalfa ( Medicago sativa L.) and Italian ryegrass ( Lolium multiflorum Lam.) seedlings”
Claim · model-written summary
Mayweed leaf water extracts were potentially allelopathic to Italian ryegrass seedlings.
- Taxon
- Italian ryegrass
Lolium multiflorume0 - Organ / stage
- seedlingse0
- Interactor
- mayweed chamomilee0weed
- Outcome
- potentially allelopathice0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“water extracts of mayweed chamomile leaf material are potentially allelopathic to alfalfa ( Medicago sativa L.) and Italian ryegrass ( Lolium multiflorum Lam.) seedlings”
Claim · model-written summary
Mayweed leaf tissue in soil reduced alfalfa development.
- Taxon
- alfalfaMedicago sativae0
- Treatment
- Leaf tissue mixed in potting soile0
- Interactor
- mayweed chamomilet0weed
- Outcome
- plant developmente0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Leaf tissue mixed in potting soil significantly reduced alfalfa and Italian ryegrass plant development”
t0“Mayweed chamomile”
Claim · model-written summary
Mayweed leaf tissue in soil reduced Italian ryegrass development.
- Taxon
- Italian ryegrassLolium multiflorume0
- Treatment
- Leaf tissue mixed in potting soile0
- Interactor
- mayweed chamomilet0weed
- Outcome
- plant developmente0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Leaf tissue mixed in potting soil significantly reduced alfalfa and Italian ryegrass plant development”
t0“Mayweed chamomile”
Claim · model-written summary
Paraquat controlled mayweed chamomile in forage systems.
- Taxon
- sericea lespedeza
Lespedeza cuneatae0 - Treatment
- Paraquat (1,1'‐dimethyl‐4,4'‐bipyridinium ion) at 0.6 kg a.i. ha −1e0
- Interactor
- mayweed chamomilee0weed
- Outcome
- controlled mayweed chamomilee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Paraquat (1,1'‐dimethyl‐4,4'‐bipyridinium ion) at 0.6 kg a.i. ha −1 and glyphosate [ N ‐(phosphonomethyl) glycine] at 1.2 and 2.4 kg a.i. ha −1 controlled mayweed chamomile in sericea lespedeza [ Lespedeza cuneata (Dumont) G. Don] and bermudagrass [ Cynodon dactylon (L.) Pers.] forage systems”
Claim · model-written summary
Glyphosate controlled mayweed chamomile in forage systems.
- Taxon
- bermudagrass
Cynodon dactylone0 - Treatment
- glyphosate [ N ‐(phosphonomethyl) glycine] at 1.2 and 2.4 kg a.i. ha −1e0
- Interactor
- mayweed chamomilee0weed
- Outcome
- controlled mayweed chamomilee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“glyphosate [ N ‐(phosphonomethyl) glycine] at 1.2 and 2.4 kg a.i. ha −1 controlled mayweed chamomile in sericea lespedeza [ Lespedeza cuneata (Dumont) G. Don] and bermudagrass [ Cynodon dactylon (L.) Pers.] forage systems”
The same questions in other papers
growing medium · growth · Medicago sativa (alfalfa)Positive and negative results
4 papers in the same direction as this paper · 7 in the opposite direction
- positive
- positive
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See all 12 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.