Paper · 2007 · Socio-Environmental Systems Modeling

Field efficacy of new compounds to replace copper for scab control in organic apple production.

B. Heijne; P.F. de Jong; Hanne Lindhard Pedersen; et al.

5
claims
10
verbatim quotes
9
citations
3
research areas
✓
Open access

Abstract

Efficacy of compounds was investigated in field experiments in Denmark and the Netherlands according to EPPO guidelines. Some Yucca extracts and potassium bicarbonate had an efficacy similar to sulphur on leaves. Addition of sulphur to Yucca 1 and to potassium bicarbonate increased the level of efficacy to that of copper. This confirms results from earlier years. Although a dose increase resulted in better efficacy, this was more prominent for Yucca1 than for potassium bicarbonate.

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 5

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Yucca extracts had leaf efficacy similar to sulphur.

Organ / stage
leavese0
Treatment
Yucca extractse0
Outcome
efficacye0
Direction
similare0
Comparator
sulphure0

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

Malus domestica
Malus domestica · TaxonW.carter · CC0 · Wikimedia Commons ↗

Verbatim

e0

“Some Yucca extracts and potassium bicarbonate had an efficacy similar to sulphur on leaves.”

✓ located verbatim in the source · abstract, characters 121–212 · show in text ↑
t0

“apple”

✓ located verbatim in the source · title, characters 78–83 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Potassium bicarbonate had leaf efficacy similar to sulphur.

Organ / stage
leavese0
Treatment
potassium bicarbonatee0
Outcome
efficacye0
Direction
similare0
Comparator
sulphure0

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

Malus domestica
Malus domestica · TaxonW.carter · CC0 · Wikimedia Commons ↗

Verbatim

e0

“Some Yucca extracts and potassium bicarbonate had an efficacy similar to sulphur on leaves.”

✓ located verbatim in the source · abstract, characters 121–212 · show in text ↑
t0

“apple”

✓ located verbatim in the source · title, characters 78–83 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Adding sulphur to Yucca 1 increased efficacy to copper level.

Treatment
Addition of sulphur to Yucca 1e0
Outcome
efficacye0
Direction
increasede0
Comparator
coppere0

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

Malus domestica
Malus domestica · TaxonW.carter · CC0 · Wikimedia Commons ↗

Verbatim

e0

“Addition of sulphur to Yucca 1 and to potassium bicarbonate increased the level of efficacy to that of copper.”

✓ located verbatim in the source · abstract, characters 213–323 · show in text ↑
t0

“apple”

✓ located verbatim in the source · title, characters 78–83 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Adding sulphur to potassium bicarbonate increased efficacy to copper level.

Treatment
sulphur to Yucca 1 and to potassium bicarbonatee0
Outcome
efficacye0
Direction
increasede0
Comparator
coppere0

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

Malus domestica
Malus domestica · TaxonW.carter · CC0 · Wikimedia Commons ↗

Verbatim

e0

“Addition of sulphur to Yucca 1 and to potassium bicarbonate increased the level of efficacy to that of copper.”

✓ located verbatim in the source · abstract, characters 213–323 · show in text ↑
t0

“apple”

✓ located verbatim in the source · title, characters 78–83 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Higher Yucca 1 dose improved efficacy more strongly than higher potassium bicarbonate dose.

Treatment
Yucca1e0
Outcome
efficacye0
Direction
bettere0
Comparator
potassium bicarbonatee0

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

Malus domestica
Malus domestica · TaxonW.carter · CC0 · Wikimedia Commons ↗

Verbatim

e0

“Although a dose increase resulted in better efficacy, this was more prominent for Yucca1 than for potassium bicarbonate.”

✓ located verbatim in the source · abstract, characters 366–486 · show in text ↑
t0

“apple”

✓ located verbatim in the source · title, characters 78–83 · show in text ↑

potassium hydrogencarbonate · control · Malus domestica (apple)Positive and negative results

5 papers: 4 positive, 1 negative or no effect

3 papers in the same direction as this paper · 1 in the opposite direction

  1. negative
  2. positive
  3. positive

1 paper more in this group

See all 5 papers →

sulfur atom · control · Malus domestica (apple)Results agree

6 papers: 6 positive, 0 negative or no effect

5 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive

2 papers more in this group

See all 6 papers →

botanical · control · Malus domestica (apple)Positive and negative results

8 papers: 5 positive, 3 negative or no effect

4 papers in the same direction as this paper · 1 in the opposite direction · 2 reporting no difference from an alternative

  1. no effect
  2. no effect
  3. no effect

4 papers more in this group

See all 8 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.