Abstract
Experiments were conducted at two sites in Virginia to study the effects of tillage (conventional plow-disk and no-tillage) and overseeding of legume cover crops (red clover, Trifolium pretense L .; white clover, Trifolium repens L.; and hairy vetch, Vicia vellosa Roth .) at transplanting on weed suppression and yield of `Big Sur' broccoli ( Brassica oleracea var. Italica Plenck) . In both sites, weed suppression from overseeding was as good and in some cases superior to that in the herbicide-treated control plots. With the exception of hairy vetch in site 2, overseeding did not reduce broccoli yield. Weed suppression and broccoli yield were unaffected by tillage system and there were no tillage × overseeding effects. Based on our data, overseeding legumes could be an important component of our no-till system as we move towards more sustainable production methods for vegetables.
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Claims 4
Claim · model-written summary
Legume overseeding suppressed weeds at least as well as herbicide control.
- Treatment
- overseedinge0
- Outcome
- weed suppressione0
- Direction
- as good and in some cases superiore0
- Comparator
- herbicide-treated control plotse0
Not reportedTaxon
Verbatim
e0“In both sites, weed suppression from overseeding was as good and in some cases superior to that in the herbicide-treated control plots.”
Claim · model-written summary
Overseeding generally did not reduce broccoli yield except hairy vetch at site 2.
- Taxon
- broccoli
Brassica oleracea var. italicae0 - Treatment
- overseedinge0
- Outcome
- broccoli yielde0
- Direction
- did not reducee0
- Qualifier
- exception of hairy vetch in site 2e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With the exception of hairy vetch in site 2, overseeding did not reduce broccoli yield.”
Claim · model-written summary
Tillage system did not affect weed suppression or broccoli yield.
- Taxon
- broccoliBrassica oleracea var. italicae0
- Treatment
- tillage systeme0
- Outcome
- Weed suppression and broccoli yielde0
- Direction
- unaffectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Weed suppression and broccoli yield were unaffected by tillage system and there were no tillage × overseeding effects.”
Claim · model-written summary
No tillage by overseeding interaction was found.
Not reportedTaxonComparator
Verbatim
e0“there were no tillage × overseeding effects.”
The same questions in other papers
tillage · weed · Brassica oleracea (wild cabbage)Positive and negative results
2 papers in the same direction as this paper · 1 in the opposite direction
- positive
- negative
- negative
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.