Abstract
Abstract The efficacy of fungicides and the optimum time of application were evaluated in spray programmes for control of botrytis fruit rot (caused by Botrytis cinerea Pers.: Fr.) in export boysenberries ( Rubus hybrid). All fungicides tested controlled the disease, with dicarboximides (iprodione, myclozolin, procymidone, vinclozolin) and dichlofluanid being more effective than captan, thiram, or folpet. Avoiding dicarboximide sprays after 10% blossom (two applications of dicarboximide before 10% blossom), followed by folpet until mid harvest resulted in slightly more berry rot than a full dicarboximide programme (9 applications), but did not reduce marketable yield: therefore, a reduced use of dicarboximides is recommended to avoid problems associated with the resistant strains of B . cinerea identified in New Zealand. Degradation of dicarboximide residues on fruit after programmes of 9 applications followed first‐order kinetics with calculated half‐lives of 10–12 days for iprodione, 9 days for procymidone, 7 days for vinclozolin, and 5.5 days for myclozolin. These decay rates are discussed in relation to residue restrictions imposed by countries importing New Zealand boysenberries.
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Claims 9
Claim · model-written summary
All tested fungicides controlled botrytis fruit rot.
- Taxon
- boysenberriest0
- Treatment
- fungicidese0
- Interactor
- Botrytis cinerea
Botrytis cinereat1pathogen - Outcome
- diseasee0
- Direction
- controllede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All fungicides tested controlled the disease”
t0“Boysenberries”
t1“Botrytis cinerea”
Claim · model-written summary
Dicarboximides and dichlofluanid were more effective than captan, thiram or folpet.
- Taxon
- boysenberriest0
- Treatment
- dicarboximides (iprodione, myclozolin, procymidone, vinclozolin) and dichlofluanide0
- Interactor
- Botrytis cinereaBotrytis cinereat1pathogen
- Outcome
- more effectivee0
- Direction
- more effectivee0
- Comparator
- captan, thiram, or folpete0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“dicarboximides (iprodione, myclozolin, procymidone, vinclozolin) and dichlofluanid being more effective than captan, thiram, or folpet.”
t0“Boysenberries”
t1“Botrytis cinerea”
Claim · model-written summary
The reduced dicarboximide schedule yielded slightly more berry rot than the full schedule.
- Taxon
- boysenberriest0
- Treatment
- two applications of dicarboximide before 10% blossome0
- Interactor
- Botrytis cinereaBotrytis cinereat1pathogen
- Outcome
- berry rote0
- Direction
- moree0
- Comparator
- full dicarboximide programmee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Avoiding dicarboximide sprays after 10% blossom (two applications of dicarboximide before 10% blossom), followed by folpet until mid harvest resulted in slightly more berry rot than a full dicarboximide programme (9 applications)”
t0“Boysenberries”
t1“Botrytis cinerea”
Claim · model-written summary
The reduced schedule did not reduce marketable yield.
Verbatim
e0“but did not reduce marketable yield”
t0“Boysenberries”
t1“two applications of dicarboximide before 10% blossom), followed by folpet until mid harvest resulted in slightly more berry rot than a full dicarboximide programme”
Claim · model-written summary
Reduced dicarboximide use is recommended to avoid resistant Botrytis strains.
- Taxon
- boysenberriest0
- Interactor
- B . cinereaBotrytis cinereae0pathogen
- Outcome
- reduced use of dicarboximidese0
- Setting
- New Zealande0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a reduced use of dicarboximides is recommended to avoid problems associated with the resistant strains of B . cinerea identified in New Zealand.”
t0“Boysenberries”
Claim · model-written summary
Residue decay half-life for iprodione was 10–12 days.
Verbatim
e0“Degradation of dicarboximide residues on fruit after programmes of 9 applications followed first‐order kinetics with calculated half‐lives of 10–12 days for iprodione, 9 days for procymidone, 7 days for vinclozolin, and 5.5 days for myclozolin.”
t0“Boysenberries”
Claim · model-written summary
Residue decay half-life for procymidone was 9 days.
Verbatim
e0“Degradation of dicarboximide residues on fruit after programmes of 9 applications followed first‐order kinetics with calculated half‐lives of 10–12 days for iprodione, 9 days for procymidone, 7 days for vinclozolin, and 5.5 days for myclozolin.”
t0“Boysenberries”
Claim · model-written summary
Residue decay half-life for vinclozolin was 7 days.
Verbatim
e0“Degradation of dicarboximide residues on fruit after programmes of 9 applications followed first‐order kinetics with calculated half‐lives of 10–12 days for iprodione, 9 days for procymidone, 7 days for vinclozolin, and 5.5 days for myclozolin.”
t0“Boysenberries”
Claim · model-written summary
Residue decay half-life for myclozolin was 5.5 days.
Verbatim
e0“Degradation of dicarboximide residues on fruit after programmes of 9 applications followed first‐order kinetics with calculated half‐lives of 10–12 days for iprodione, 9 days for procymidone, 7 days for vinclozolin, and 5.5 days for myclozolin.”
t0“Boysenberries”