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.
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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
Claim · model-written summary
Yucca extracts had leaf efficacy similar to sulphur.
- Taxon
- apple
Malus domesticat0 - 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.

Verbatim
e0“Some Yucca extracts and potassium bicarbonate had an efficacy similar to sulphur on leaves.”
t0“apple”
Claim · model-written summary
Potassium bicarbonate had leaf efficacy similar to sulphur.
- Taxon
- apple
Malus domesticat0 - 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.

Verbatim
e0“Some Yucca extracts and potassium bicarbonate had an efficacy similar to sulphur on leaves.”
t0“apple”
Claim · model-written summary
Adding sulphur to Yucca 1 increased efficacy to copper level.
- Taxon
- apple
Malus domesticat0 - 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.

Verbatim
e0“Addition of sulphur to Yucca 1 and to potassium bicarbonate increased the level of efficacy to that of copper.”
t0“apple”
Claim · model-written summary
Adding sulphur to potassium bicarbonate increased efficacy to copper level.
- Taxon
- apple
Malus domesticat0 - 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.

Verbatim
e0“Addition of sulphur to Yucca 1 and to potassium bicarbonate increased the level of efficacy to that of copper.”
t0“apple”
Claim · model-written summary
Higher Yucca 1 dose improved efficacy more strongly than higher potassium bicarbonate dose.
- Taxon
- apple
Malus domesticat0 - Treatment
- Yucca1e0
- Outcome
- efficacye0
- Direction
- bettere0
- Comparator
- potassium bicarbonatee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Although a dose increase resulted in better efficacy, this was more prominent for Yucca1 than for potassium bicarbonate.”
t0“apple”
The same questions in other papers
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- positive
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4 papers in the same direction as this paper · 1 in the opposite direction · 2 reporting no difference from an alternative
- no effect
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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.