Ābolu puves ierosinātāju spektrs glabāšanās laikā
2017
Simtniece, A., Latvia Univ. of Agriculture, Jelgava (Latvia). Faculty of Agriculture | Bimsteine, G., Latvia Univ. of Agriculture, Jelgava (Latvia). Faculty of Agriculture | Vilcane, J., Latvian Plant Protection Research Centre, Riga (Latvia)
Apple rot is the most important cause of yield losses during storage. The average losses can be estimated around 40% and it depends on apple variety, meteorological situation during vegetation season and quality of storage conditions as well. The most important pathogens caused by apple rot are fungi from families: Neofabraea, Colletotrichum, Monilinia, Botrytis and Penicillium. Infection by some pathogens occurs mainly in the orchards but remain latent until storage, other infections occurs only during storage. The ten different apple varieties were tested during storage season 2015/2016. All apples with rot symptoms were collected and analysed all along storage, at different times. The causal agents were identified based on symptoms, formation and colour of acervuli and conidia on the fruit surface. Totally 394 samples were analysed and 10 different causal agents of rot detected. The incidence of causal agents varied 1–35%. During first assessment the dominant were rot caused by families from Neofabraea, Monilinia, Alternaria, Cladosporium and Botrytis. Whereas, during the last assessment, the spectrum of causal agents changed and dominant species were – Colletotrichum, Neofabraea, Fusarium and Penicillium. The severity of apple rot mostly depended on apple variety and time of assessment.
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