First Report of Bristlecone Fir Branch Canker in California Caused by Diplodia mutila

first report of diplodia seriata from zelkova carpinifolia with canker symptoms in iran

zelkova carpinifolia is native to the alborz mountains in iran. it is a deciduous tree growing 20-35 m tall, with a trunk of up to 2 m in diameter. during the winter of 2011 cankers and dieback of branches were most commonly seen on zelkova trees in the daland forest in golestsn province. cankers were enlarged and severely led to decline in march. distinctive symptoms, assumed to be caused by a...

Susceptibility of Douglas fir ( Pseudotsuga menziesii ) to pitch canker , caused by Gibberella circinata ( anamorph = Fusarium circinatum )

For better characterization of the risk of pitch canker (caused by Gibberella circinata , anamorph = Fusarium circinatum ) to Douglas fir ( Pseudotsuga menziesii ), Californian isolates, selected exotic isolates, and ascospore progeny of a cross between wild-type Californian isolates were tested for aggressiveness to this host species. In addition, seedlings from representative provenances of P...

first report of diplodia malorum fuckel the causal agent of canker disease of apple trees in iran*

in summer of 2009, a disease with symptoms such as stem and trunk cankers were seen in apple golden delicious cultivars trees in west azerbaijan orchards. the disease was in progress due to environmental stresses such as drought and frostbite. bark and vascular system of the tree was darkened at the site of infection and cankers were scaling on main trunk and branches. to isolation of the fungi...

Case Report of Meningoencephalitis in Calves Caused by Escherichia coli

The Pitch Canker Epidemic in California

Native Monterey pine (Pinus radiata D. Don) forests are currently found at three disjunct locations in coastal California and on two islands off the coast of Mexico. The mainland forests comprise, in total, approximately 4,500 ha (11), whereas the two island populations are limited to 150 ha on Cedros Island and fewer than 400 trees on Guadalupe Island (28). Collectively, these populations are ...