This note provides information on the pathological situation of sunflower in Italy, particularly the severity of the diseases present in the most important areas of sunflower cultivation. Results of a two-year investigation show that Plasmopara helianthi is no longer a problem due to the introduction of hybrids resistant to the R1 and R2 races of the parasite as well as to seed treaatment with metalaxyl. On the contrary, the incidence and severity of Sclerotium bataticola attacks are very high. The infections of Sclerotinia sclerotiorum on early spring seeded sunflower primarily occur in the stem and occasionally on the head. In contrast, head rot is more common on sunflower planted as a summer crop. Other minor pathogens have been occasionally observed.
Results of a two-year investifation on the most important pathogens in Italy
ZAZZERINI, Antonio;TOSI, Laura
1987
Abstract
This note provides information on the pathological situation of sunflower in Italy, particularly the severity of the diseases present in the most important areas of sunflower cultivation. Results of a two-year investigation show that Plasmopara helianthi is no longer a problem due to the introduction of hybrids resistant to the R1 and R2 races of the parasite as well as to seed treaatment with metalaxyl. On the contrary, the incidence and severity of Sclerotium bataticola attacks are very high. The infections of Sclerotinia sclerotiorum on early spring seeded sunflower primarily occur in the stem and occasionally on the head. In contrast, head rot is more common on sunflower planted as a summer crop. Other minor pathogens have been occasionally observed.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
