Paper · 2010 · Weed Science

Hexazinone and Fertilizer Impacts on Sheep Sorrel (Rumex acetosella) in Wild Blueberry

Karen J. Kennedy; Nathan S. Boyd; Vilis O. Nams

8
claims
19
verbatim quotes
29
citations
3
research areas
—
Not open access

Abstract

Sheep sorrel is an invasive, creeping perennial weed of lowbush blueberry fields. It is one of the most prominent weeds in blueberry fields in Nova Scotia and is responsible for decreasing yields. Three levels of fertilizer (0, 20, 40 kg N ha −1 ) and two levels of hexazinone (0 or 1.92 kg ai ha −1 ) were applied to experimental plots to determine their effects on sheep sorrel density. Sprout-year hexazinone reduced sheep sorrel densities, which led to increased yields. Fertilizer increased weed density in the absence of herbicides, had no effect on density in the presence of herbicides, tended to have no impact on floral buds, and did not increase yields. Fruiting-year hexazinone decreased sheep sorrel densities in some situations, but did not result in yield increases.

Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗

The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.

Claims 8

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Sprout-year hexazinone reduced sheep sorrel density.

Taxon
Wild Blueberryt0
Treatment
Sprout-year hexazinonee0
Interactor
sheep sorrelRumex acetosellae0weed
Outcome
sheep sorrel densitiese0
Direction
reducede0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Rumex acetosella
Rumex acetosella · InteractorAnRo0002 · CC0 · Wikimedia Commons ↗

Verbatim

e0

“Sprout-year hexazinone reduced sheep sorrel densities”

✓ located verbatim in the source · abstract, characters 389–442 · show in text ↑
t0

“Wild Blueberry”

✓ located verbatim in the source · title, characters 72–86 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Reduced sheep sorrel density after sprout-year hexazinone increased blueberry yields.

Taxon
Wild Blueberryt0
Treatment
Sprout-year hexazinonee0
Interactor
sheep sorrelRumex acetosellae0weed
Outcome
yieldse0
Direction
increasede0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Rumex acetosella
Rumex acetosella · InteractorAnRo0002 · CC0 · Wikimedia Commons ↗

Verbatim

e0

“Sprout-year hexazinone reduced sheep sorrel densities, which led to increased yields”

✓ located verbatim in the source · abstract, characters 389–473 · show in text ↑
t0

“Wild Blueberry”

✓ located verbatim in the source · title, characters 72–86 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Fertilizer increased weed density without herbicides.

Taxon
Wild Blueberryt0
Treatment
Fertilizere0
Outcome
weed densitye0
Direction
increasede0
Qualifier
absence of herbicidese0

Not reportedComparator

Verbatim

e0

“Fertilizer increased weed density in the absence of herbicides”

✓ located verbatim in the source · abstract, characters 475–537 · show in text ↑
t0

“Wild Blueberry”

✓ located verbatim in the source · title, characters 72–86 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Fertilizer had no effect on weed density in the presence of herbicides.

Taxon
Wild Blueberryt0
Treatment
Fertilizere1
Outcome
densitye0
Direction
no effecte0
Qualifier
presence of herbicidese0

Not reportedComparator

Verbatim

e0

“had no effect on density in the presence of herbicides”

✓ located verbatim in the source · abstract, characters 539–593 · show in text ↑
e1

“Fertilizer increased weed density in the absence of herbicides”

✓ located verbatim in the source · abstract, characters 475–537 · show in text ↑
t0

“Wild Blueberry”

✓ located verbatim in the source · title, characters 72–86 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Fertilizer tended not to affect floral buds.

Taxon
Wild Blueberryt0
Treatment
Fertilizere1
Outcome
floral budse0
Direction
no impacte0

Not reportedComparator

Verbatim

e0

“tended to have no impact on floral buds”

✓ located verbatim in the source · abstract, characters 595–634 · show in text ↑
e1

“Fertilizer increased weed density in the absence of herbicides”

✓ located verbatim in the source · abstract, characters 475–537 · show in text ↑
t0

“Wild Blueberry”

✓ located verbatim in the source · title, characters 72–86 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Fertilizer did not increase yields.

Taxon
Wild Blueberryt0
Treatment
Fertilizere1
Outcome
yieldse0
Direction
did not increasee0

Not reportedComparator

Verbatim

e0

“did not increase yields”

✓ located verbatim in the source · abstract, characters 640–663 · show in text ↑
e1

“Fertilizer increased weed density in the absence of herbicides”

✓ located verbatim in the source · abstract, characters 475–537 · show in text ↑
t0

“Wild Blueberry”

✓ located verbatim in the source · title, characters 72–86 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Fruiting-year hexazinone decreased sheep sorrel density in some situations.

Taxon
Wild Blueberryt0
Treatment
Fruiting-year hexazinonee0
Interactor
sheep sorrelRumex acetosellae0weed
Outcome
sheep sorrel densitiese0
Direction
decreasede0
Qualifier
in some situationse0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Rumex acetosella
Rumex acetosella · InteractorAnRo0002 · CC0 · Wikimedia Commons ↗

Verbatim

e0

“Fruiting-year hexazinone decreased sheep sorrel densities in some situations”

✓ located verbatim in the source · abstract, characters 665–741 · show in text ↑
t0

“Wild Blueberry”

✓ located verbatim in the source · title, characters 72–86 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Fruiting-year hexazinone did not increase yield.

Taxon
Wild Blueberryt0
Treatment
Fruiting-year hexazinonee0
Outcome
yield increasese0
Direction
did not result ine0

Not reportedComparator

Verbatim

e0

“Fruiting-year hexazinone decreased sheep sorrel densities in some situations, but did not result in yield increases”

✓ located verbatim in the source · abstract, characters 665–780 · show in text ↑
t0

“Wild Blueberry”

✓ located verbatim in the source · title, characters 72–86 · show in text ↑

Hexazinone · yield · VacciniumResults differ

3 papers: 2 positive, 1 negative or no effect

2 in the opposite direction

  1. positive
  2. positive
See all 3 papers →

fertilization · yield · VacciniumResults differ

25 papers: 12 positive, 13 negative or no effect

12 papers in the same direction as this paper · 12 in the opposite direction

  1. positive
  2. positive
  3. positive

21 papers more in this group

See all 25 papers →

fertilization · pest · VacciniumResults agree

2 papers: 0 positive, 2 negative or no effect

1 paper in the same direction as this paper

  1. no effect
See all 2 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.