During July 2015, diseased plants of cucumber (Cucumis sativus) were observed in a private garden in the Vilnius Region, Lithuania. Disease symptoms, including leaf yellowing, shortening of internodes, and virescence of flowers, indicated possible infection by a phytoplasma. Samples of leaves were...

Carrot (Daucus carota cv. Mascot) plants exhibiting symptoms of yellowing, purpling, and curling of leaves, proliferation of shoots, formation of hairy secondary roots, and plant decline were observed in March 2014 and February 2015 in commercial fields in the Gharb Region of Morocco. The symptoms...

During the 2015 and 2016 growing seasons, Camelina plants (Camelina sativa cv. S0-40) exhibiting symptoms typical of aster yellows infection were observed in a 10-acre demonstration plot at the Dakota Lakes Research Farm in Hughes County, South Dakota, and in research plots at the South Dakota...

The quick decline syndrome of olive (OQDS) is a disease that appeared all of a sudden some years ago in a restricted area near the city of Gallipoli (Ionian coast of the Salento peninsula, southern-east Italy) and began spreading through the heavily olive-grown countryside of lower Salento. Xylella ...

The olive quick decline syndrome (OQDS) is a disease that appeared suddenly a few years ago in the province of Lecce (Salento peninsula, southeastern Italy). Among the factors that may be involved in its aetiology, the most relevant is Xylella fastidiosa, a quarantine pathogen of American origin,...

The prediction of new disease emergence, associated with new pathogens or not, remains a difficult and controversial topic. The main factors driving epidemics are often only identified several years after outbreaks, generally revealing that a limited number of factors are associated with the...

Pentatomid stink bugs (Hemiptera: Pentatomidae) include several species that occur in pear orchards where they cause feeding damage with their piercing-sucking mouthparts, resulting in deformed fruits. In the Belgian fruit growing area they used to be secondary pests, but over the last decade they...

Huanglongbing (HLB) also known as citrus greening is one of the most destructive disease of citrus worldwide. Three bacterial species including 'Candidatus Liberibacter asiaticus', 'Ca. L. africanus' and 'Ca. L. americanus' have been identified as causal agents associated with this disease (Bové...

As weeds infected with 'Candidatus Liberibacter solanacearum' (CLso) could be reservoirs of the pathogen in the absence of crops, weeds surrounding tomato crops in Hawke's Bay (North Island) were monitored every 3 months for presence of tomato potato psyllid (TPP; Bactericera cockerelli) between...

Parthenium weed (Parthenium hysterophorus, Asteraceae) is a common, invasive weed found throughout the Indian subcontinent, Africa, America and Australia. The observed disease, Parthenium Witches' Broom (PWB), characterised by phylloidy, stunting and prolific branching was observed during a field...