Abstract
Fungicide programmes for the control of postharvest Botrytis bunch rot on table grapes were evaluated in six trials from 1984/85 to 1991/92 in the Western Cape. The study demonstrated the ineffectiveness of dicarboximide applications during bloom to early pea size in well managed vineyards. Dicarboximides were most effective when applied from bunch closure to ripening. lprodioue/sulphur treatments at veraison and before harvest reduced Botrytis bunch rot, but they were ineffective in inhibiting infection during storage. Control was only achieved when grapes were exposed to S02 during storage. Although bunch dip treatments reduced infection in the vineyard, this control was not commercially acceptable. Therefore no real advantage was found when bunches were dipped in fungicide at veraison to ensure better coverage. The fact that berries became infected primarily during harvest, package operations and storage, emphasised the necessity for reducing B. cinerea inoculum on harvested grapes. It is suggested that the results of this investigation may lay the foundation for incorporating biological control in Botrytis bunch rot control.
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Claims 9
Claim · model-written summary
Dicarboximide applications from bloom to early pea size were ineffective against Botrytis bunch rot of table grapes in well-managed vineyards.
- Taxon
- table grapese2
- Treatment
- dicarboximide applications during bloom to early pea sizee1
- Outcome
- control of postharvest Botrytis bunch rote2
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The study demonstrated the ineffectiveness of dicarboximide applications during bloom to early pea size in well managed vineyards”
e2“Fungicide programmes for the control of postharvest Botrytis bunch rot on table grapes”
Claim · model-written summary
Dicarboximides were most effective against Botrytis bunch rot of table grapes when applied from bunch closure to ripening.
- Taxon
- table grapese2
- Treatment
- Dicarboximidese1
- Outcome
- control of postharvest Botrytis bunch rote2
- Qualifier
- applied from bunch closure to ripeninge1
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Dicarboximides were most effective when applied from bunch closure to ripening”
e2“Fungicide programmes for the control of postharvest Botrytis bunch rot on table grapes”
Claim · model-written summary
Lprodione/sulphur treatments at veraison and before harvest reduced Botrytis bunch rot of table grapes.
- Taxon
- table grapese2
- Treatment
- lprodioue/sulphur treatments at veraison and before harveste1
- Outcome
- Botrytis bunch rote1
- Direction
- reducede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“lprodioue/sulphur treatments at veraison and before harvest reduced Botrytis bunch rot”
e2“Fungicide programmes for the control of postharvest Botrytis bunch rot on table grapes”
Claim · model-written summary
Lprodione/sulphur treatments at veraison and before harvest were ineffective in inhibiting infection during storage.
- Taxon
- table grapese2
- Treatment
- lprodioue/sulphur treatments at veraison and before harveste1
- Outcome
- infection during storagee1
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“lprodioue/sulphur treatments at veraison and before harvest reduced Botrytis bunch rot, but they were ineffective in inhibiting infection during storage”
e2“Fungicide programmes for the control of postharvest Botrytis bunch rot on table grapes”
Claim · model-written summary
Control of Botrytis bunch rot was achieved on grapes only when they were exposed to SO2 during storage.
Not reportedComparatorDirection
Verbatim
e1“Control was only achieved when grapes were exposed to S02 during storage”
Claim · model-written summary
Bunch dip treatments reduced infection of table grapes in the vineyard, but this control was not commercially acceptable.
- Taxon
- table grapese2
- Treatment
- bunch dip treatmentse1
- Outcome
- infection in the vineyarde1
- Direction
- reducede1
- Qualifier
- not commercially acceptablee1
Not reportedComparator
Verbatim
e1“Although bunch dip treatments reduced infection in the vineyard, this control was not commercially acceptable”
e2“Fungicide programmes for the control of postharvest Botrytis bunch rot on table grapes”
Claim · model-written summary
Dipping table grape bunches in fungicide at veraison gave no real advantage to ensure better coverage.
- Taxon
- table grapese2
- Treatment
- bunches were dipped in fungicide at veraisone1
- Outcome
- advantagee1
- Qualifier
- to ensure better coveragee1
Not reportedComparatorDirection
Verbatim
e1“no real advantage was found when bunches were dipped in fungicide at veraison to ensure better coverage”
e2“Fungicide programmes for the control of postharvest Botrytis bunch rot on table grapes”
Claim · model-written summary
Table grape berries became infected primarily during harvest, package operations and storage.
Verbatim
e1“The fact that berries became infected primarily during harvest, package operations and storage”
e2“Fungicide programmes for the control of postharvest Botrytis bunch rot on table grapes”
Claim · model-written summary
Reducing B. cinerea inoculum on harvested grapes is necessary.
- Taxon
- grapese1
- Interactor
- B. cinerea
Botrytis cinereae1pathogen - Outcome
- reducing B. cinerea inoculum on harvested grapese1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“emphasised the necessity for reducing B. cinerea inoculum on harvested grapes”
The same questions in other papers
dicarboximide · Botrytis · VitisResults agree
1 paper in the same direction as this paper
- positive
storage · control · VitisResults agree
2 papers in the same direction as this paper
- positive
- 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.