Thousand cankers disease (TCD) of walnut has been detected in Maryland and Pennsylvania, so a detection is possible in Delaware this season. The disease caused by a fungus and carried by the very ...

Anyone who has apple or pear trees in their garden is being warned they need to check them in January for a potentially fatal ...

New cankers form from mid-spring, and once formed are present all year. Cankers can also develop on the trunk." Apples are ...

Infection by S. clavigignenti-juglandacearum results in sunken, elliptical cankers on branches, stems, and buttress roots and dark brown, elliptical stains beneath the bark. If large cankers (or many ...

Diplodia kills young needles and actively growing shoots of Austrian, red and other 2 to 3 needle pines. If trees are stressed, resin soaked cankers form on branches and kill them. Use good cultural ...

Infection by S. clavigignenti-juglandacearum results in sunken, elliptical cankers on branches, stems, and buttress roots and dark brown, elliptical stains beneath the bark. If large cankers (or many ...

The branch with the dead needles will have a canker which is a swollen area with discolored and cracked bark. Cankers on the main trunk are oval or diamond-shaped and often have a dead branch in the ...

Yield-robbing cankers make phoma one of the most important diseases of winter oilseed rape in the UK, especially in Central, Southern and Eastern England. Despite fungicide treatment, infection is ...