Greek Olive Tree Disease

More than a million ancient olive trees are being wiped out by a deadly disease in southern italy forcing a 20 per cent rise in the cost of olive oil across the eu. Olive knot disease on olive olea europaea is distributed in olive growing regions worldwide and reports of the disease in california date back to the late 19th century. Several fungal diseases commonly attack olive trees.

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Koroneiki Greek Olive Tree

Italy s olive trees didn t have to die new studies about a deadly bacterium threatening the trees suggest that historic groves can be saved by barbie latza nadeau on april 5 2016 olive trees.

Greek olive tree disease. In an article yesterday photos of the desecrated olive grove were. Most olive trees are started. Savastanoi psv a bacterial pathogen that is spread short distances during the winter and spring rain events associated with california s mediterranean climate. A pathogen is destroying italy s olive trees in the puglia region of italy which produces 40 percent of the country s olive oil a bacterium from the new world xylella fastidiosa is infecting.

Olive trees have been grafted since ancient times although grafting is not currently considered the best way to propagate olives. Yann coatsaliou afp getty images one of southern europe s most important staples olive oil is. Olive tree pollen is extremely allergenic with an opals allergy scale rating of 10 out of 10. Nonethe less the mea sures proved to be short on block ing the entrance to the noto ri ous tree killer.

How grafting affects olive trees. Severe virticillium wilt kills entire trees. Italy was the first major olive oil mak ing coun try in europe hit by xylella in the region of puglia in 2013 and later in other areas where olive trees are being felled and burned in an attempt to con tain the bac terium. The disease is caused by pseudomonas savastanoi pv.

The peacock spot disease thrives in humid cold conditions and causes lesions to form on upper leaf surfaces. Olea europaea is primarily wind pollinated and their light buoyant pollen is a strong trigger for asthma. Olive trees infected with xylella fastidiosa are destroyed in menton southern france. Virticillium wilt causes wilted branches thin canopies and leaf dieback.

Greece since the bronze age have been producing and exporting olives and olive oil effectively meaning that olives have been a critical part of the greek economy for at least 4 000 years and the chopping of these trees is seen as an attack on greek heritage and identity.