Ohran taudit kuriin

Ohran verkkolaikunkestävyys on parantanut. Sen sijaan rengaslaikun ja härmänkestävyydessä ei ole tapahtunut selkeitä muutoksia. Lajikkeiden taudinkestävyydessä on silti merkittäviä eroja.vo

Kasvitautitorjunnan onnistuminen kasvukaudella 2015

201

Plant pathogens as climate change indicators in Finland

The effects of climate change on plant pathogens could be roughly divided in three groups: 1) Direct effects on plant pathogens environment: on temperature and moisture during the growing season and winter. 2) Effects on host plant: increased CO2 level, autumn sown crops, abiotic stresses. 3) Indirect effects on plant pathogen: evolution of pathogens to better survive in changed environment. In this paper, the changes that have been observed in plant pathogen species on field crops in Finland will be discussed

Kasvinviljelyn tulevaisuus seudulla

201

Kasvitaudit 2018 kesällä

201

The emergence of cereal fungal diseases and the incidence of leaf spot diseases in Finland

Fungal plant pathogens causing cereal diseases in Finland have been studied by a literature survey, and a field survey of cereal leaf spot diseases conducted in 2009. Fifty-seven cereal fungal diseases have been identified in Finland. The first available references on different cereal fungal pathogens were published in 1868 and the most recent reports are on the emergence of Ramularia collo-cygni and Fusarium langsethiae in 2001. The incidence of cereal leaf spot diseases has increased during the last 40 years. Based on the field survey done in 2009 in Finland, Pyrenophora teres was present in 86%, Cochliobolus sativus in 90% and Rhynchosporium secalis in 52% of the investigated barley fields. Mycosphaerella graminicola was identified for the first time in Finnish spring wheat fields, being present in 6% of the studied fields. Stagonospora nodorum was present in 98% and Pyrenophora tritici-repentis in 94% of spring wheat fields. Oat fields had the fewest fungal diseases. Pyrenophora chaetomioides was present in 63% and Cochliobolus sativus in 25% of the oat fields studied