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| Maxin, Peter; Fieger-Metag, Nicole; Benduhn, Bastian; Kruse, Petra; Heyne, Peter. |
| In general, organic grown apples (Malus x domestica Borkh.) are not treated with chemical fungicides to pre-vent storage decay and these fruits may suffer up to 30% decay during storage. Preliminary experiments had shown that hot water dipping of apples may be an alternative. To inhibit Gloeosporium rot (Pezicula alba, P. malicortis) water temperature may be of about 50°C and dipping time from 60 sec up to 240 sec. The objec-tive was to determinate the suitable hot water treatment that prevent decay incidence and maintain fruit qual-ity (firmness, scale symptoms). In between the years 2002 and 2005 the test were repeated and a recom-mendation for the apple varieties in the area Northern Germany was elaborated. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Crop health; Quality; Protection Fruit and berries. |
| Ano: 2006 |
URL: http://orgprints.org/8839/1/ecofruit_12th_21.pdf |
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| Palm, Gerd; Klopp, Karsten; Kruse, Petra. |
| In 2001 eleven different apple scab control strategies with reduced copper use and copper substitutes were tested on an organic apple orchard near Hamburg, Germany. The strategies were tested on a six year old "Elstar" plantation. Among the different fungicides were copper sulphate, copper hydroxide, lime sulphur, sulphur, bacillus subtilis and "Biofa-Algenextrakt". The results show that fruit scab as well as leave scab can be fairly well controlled by a lime sulphur strategy and the copper hydroxid strategies. Bad results were produced with the different copper sulphate strategies and bacillus subtilis, insufficient results with the sulphur strategies. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Crop health; Quality; Protection Fruit and berries. |
| Ano: 2002 |
URL: http://orgprints.org/14603/1/palm_75.pdf |
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| Klopp, Karsten; Kruse, Petra; Maxin, Peter; Palm, Gerd. |
| In the last eight years research work has been done at the Fruit Research and Extension Centre Jork (OVB Jork) on strategies to control apple scab (Venturia inaequalis), powdery mildew of apple (Podosphaera leucotricha), sooty blotch(several fungis) and apple rust mite (Aculus schlechtendali) on organic grown pome fruit. Since 1997 different control strategies with reduced copper use and copper substitutes and sulphur with different application rates were tested in several trials on trees in organic apple orchards near Hamburg, Germany. The strategies were tested on the cultivar `Elstar´. The results show that sulphur has significant effects to control fruit scab, leave scab, powdery mildew, sooty blotch and rust mite. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Crop health; Quality; Protection Fruit and berries. |
| Ano: 2005 |
URL: http://orgprints.org/3765/1/3765.pdf |
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| Klopp, Karsten; Kruse, Petra; Maxin, Peter; Palm, Gerd. |
| In 2003 six apple scab control strategies were tested, three with only lime sulphur in different application strategies, another three strategies with different amounts of copper. The strategies were tested in an organic apple orchard near Hamburg, Germany, on a 15 year old `Elstar´ plantation. Due to the recorded infection periods and the infection load the different strategies were tested. The results show that a proper lime sulphur strategy is quite successful to fight apple scab (< 4% infected fruit), has good side effects on apple mildew (< 2%) and only little russetting (< 5%) compared to strategies with copper fungicides. ablto fight fruit scab as well as leave scab. A proper strategy means no application later than 15 hours after... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Crop health; Quality; Protection Fruit and berries. |
| Ano: 2004 |
URL: http://orgprints.org/14443/1/19_Klopp_96_100.pdf |
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