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| Toenshoff, E. R.; Brunner, H.; Tamm, L.; Schärer, H.-J.; Oberhänsli, T.. |
| Candidatus Orchards of 30 to >100 years old fruit trees used for cider production are endangered by an accumulation of abiotic and biotic stress factors. Among biotic stress factors, diseases such as pear decline (PD) caused by the bacterial pathogen ' Phytoplasma ' contributes to a weakening and reduced life time of affected trees. Since direct treatment of this disease is not possible, approaches have gained attention, which might lead to an increased resilience against this pathogen, such as incisions of the cambium at the graft union at the stem base. Six 35 years old pear trees () of a Swiss cider production orchard, all affected by mild decline were chosen for this study. Four out of them were treated with 2-4 incisions per tree in February 2016.... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Fruit and berries Breeding; Genetics and propagation Crop health; Quality; Protection. |
| Ano: 2018 |
URL: http://orgprints.org/34874/1/Toenshoffetal-2018-ECOFruitConference2018-Proceeding-p43-49.pdf |
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| Schärer, H.-J.; Ludwig, M.; Oberhänsli, T.; Bohr, A.; Buchleither, S.; Tamm, L.. |
| Marssonina leaf blotch is a fungal disease of apple caused by the ascomycete Diplocarpon mali (anamorph: Marssonina coronaria). The pathogen origins from Asia where it accounts for crop losses of up to 100%. In Europe it was first detected in Italy in 2001 and is spreading since then in Switzerland and southern Germany (first reports in 2010), mainly in organic apple orchards and in orchards for cider production with a reduced fungicide regime. M. coronaria infects the leaves by using appressoria and shortly afterwards forms haustoria in the host cells. Blackish-violet spots appear on the upper leaf side, sometimes turning into star-like lesions. On the lesions acervuli are produced and eventually the leaves become chlorotic and fall off. First symptoms... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Fruit and berries Crop health; Quality; Protection. |
| Ano: 2018 |
URL: http://orgprints.org/34873/1/Poster-Schaerer-etal-2018_Marssonina_Sonderformat_ICPP_Kongress_2018-Boston.pdf |
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| Schärer, H.-J.; Ludwig, M.; Oberhaensli, T.; Tamm, L.. |
| The apple pathogen Marssonina coronaria (teleomorph: Diplocarpon mali) has recently become a significant problem in Central European organic apple production, causing dark spots on both the leaves and fruit, and early leaf fall. Field observations and resistance testing under controlled conditions indicate that there are differences in resistance to M.coronaria between cultivars. We screened 39 apple cultivars, selected from a large collection of genetic resources, for their susceptibility or resistance to M.coronaria. 1 year old saplings were artificially inoculated under semi-controlled conditions. The development of disease symptoms was observed and assessed several times over more than two months. Symptoms varied largely between cultivars, from... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Fruit and berries Crop health; Quality; Protection. |
| Ano: 2018 |
URL: http://orgprints.org/34870/1/Poster_Schaerer_etal-2018_Marssonina%20coronaria_Final_web.pdf |
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| Thürig, B.; Schärer, H.-J.; Ludwig, M.; James, E. E.; Langat, M. K.; Mulholland, D. A.; Kleeberg, I.; Tamm, L.. |
| Extracts from European Larch (Larix decidua) were shown to be efficient to control grapevine downy mildew (Plasmopara viticola) under controlled and field conditions. Larixyl acetate and larixol were identified as the active compounds. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Crop health; Quality; Protection Viticulture. |
| Ano: 2018 |
URL: http://orgprints.org/34881/1/Poster_NBFF_Larixyne_Thuerig_2018_ohne_Schnittmarken.pdf |
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