Zemdirbyste-Agriculture, vol. 95, No. 3 (2008), p. 58–64
THE PECULIARITIES OF THE OCCURRENCE OF PASMO DISEASE (SEPTORIA LINICOLA) IN CENTRAL LITHUANIA
Upyte Research Station of the Lithuanian Institute of Agriculture
Linininkų g. 3, Upytė, Panevėžys distr., Lithuania
The present paper analyses the peculiarities of the occurrence of the pasmo disease (Septoria linicola (Speg.) Garassini) during the flax growing season. Experiments were carried out over the period 2001–2003 in Central Lithuania, Panevėžys district. The tests involved an industrial flax variety ‛Kastyčiai’.
Pasmo disease occurred on flax stems and leaves in 2001 and in the 2003, it was affected by a lot of rainfall, when flax crops were lodged, stems and capsules were damaged by hail. The disease causal agent was identified with a microscope when typical conidia were found on the damaged plant parts. Visual symptoms of pasmo disease on flax were not detected in the year 2002, when the weather conditions were not favourable for the occurrence of the disease.
Our experimental evidence suggests that the infestation of S. linicola on stems and leaves was significantly influenced by the weather conditions.
Key words: flax, pasmo, Septoria linicola, disease severity, weather conditions.