Abstract
Until yet the fongicides in organic fruit growing (sulphur, lime sulphur, copper, claypowders) are used as protectants applied before the rain, or as stop-spray or during infection development. Post infection use of lime sulphur could reduce the number of spray rounds, allowing for the use of less pesticides, and reducing the adverse effect on beneficial insects and mites. In the 30's of the last century, post-infection effects of lime sulphur were found in lab and field trials. Effective control was achieved by applications 30 to even 72 hours after the start of rain. Field trials in the Netherlands in 1999, 2000 and 2001 confirmed that post-infection applications of lime sulphur are effective under field conditions till at least 20 hours after the start of the infection. Evaluation of the practical experiences with the use of lime sulphur as post-infection spray in 2000 and 2001 however showed that a dose of at least 0,15 % should be used, and the product should be applied with a high water volume, or on wet leaves to allow for an effective contact between the pentasulphides and the fungus. In 2000 one application of lime sulphur two weeks after blossom lead to severe russeting of the fruit skin on the variety Jonagold.
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Claims 4
Claim · model-written summary
Earlier trials achieved apple-scab control with lime sulphur applied 30 to 72 hours after rain began.
- Taxon
- apple
Malus domesticat0 - Treatment
- lime sulphure1
- Outcome
- Effective controle0
- Value
- 30 to even 72 hourse0
- Qualifier
- after the start of raine0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Effective control was achieved by applications 30 to even 72 hours after the start of rain”
t0“apple scab”
e1“post-infection effects of lime sulphur”
Claim · model-written summary
Netherlands field trials confirmed effective post-infection lime sulphur through at least 20 hours after infection began.
- Taxon
- appleMalus domesticat0
- Treatment
- post-infection applications of lime sulphure0
- Outcome
- effectivee0
- Value
- at least 20 hourse0
- Setting
- Netherlandse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Field trials in the Netherlands in 1999, 2000 and 2001 confirmed that post-infection applications of lime sulphur are effective under field conditions till at least 20 hours after the start of the infection”
t0“apple scab”
Claim · model-written summary
Practical experience indicated that effective lime sulphur contact requires at least 0,15 % in high water volume or on wet leaves.
- Taxon
- appleMalus domesticat0
- Treatment
- lime sulphure1
- Outcome
- a dose of at least 0,15 % should be usede0
- Value
- at least 0,15 %e0
- Qualifier
- high water volume, or on wet leavese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a dose of at least 0,15 % should be used, and the product should be applied with a high water volume, or on wet leaves to allow for an effective contact between the pentasulphides and the fungus”
e1“use of lime sulphur as post-infection spray”
t0“apple scab”
Claim · model-written summary
One lime sulphur application two weeks after blossom severely russeted Jonagold fruit skin.
- Taxon
- appleMalus domesticat0
- Material
- Jonagolde0
- Organ / stage
- fruit skine0
- Treatment
- one application of lime sulphur two weeks after blossome0
- Outcome
- severe russeting of the fruit skine0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In 2000 one application of lime sulphur two weeks after blossom lead to severe russeting of the fruit skin on the variety Jonagold”
t0“apple scab”
The same questions in other papers
sulfur atom · control · Malus domestica (apple)Results agree
5 papers in the same direction as this paper
- positive
- positive
- positive
2 papers more in this group
See all 6 papers →lime · control · Malus domestica (apple)Results agree
1 paper in the same direction as this paper
- positive
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.