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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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| Tamm, L.; Thürig, B.; Bongiorno, G.; Postma, J.; Fuchs, J. G.; Oberhänsli, T.. |
| Soils suppressive to soil-borne diseases have attracted the attention of farmers and researchers for decades and many suppressive soils have been described. Microorganisms and soil microbial communities involved in suppressiveness have been studied intensively, but the underlying mechanisms are still not well understood. Suppressiveness to soil- as well as air-borne diseases has been shown to be highly site-specific. We will review how suppressiveness can be influenced by agricultural practices. Suppressiveness destroyed e.g. by steam sterilisation of soils could only be partially restored on the short-term by re-inoculation of soils, and the success of re-inoculation depended on the soil matrix as well as on the inoculum used. Long-term management (e.g.... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Soil biology Crop health; Quality; Protection. |
| Ano: 2018 |
URL: http://orgprints.org/34926/1/2018ICPPPromotionalFlyer.pdf |
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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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