First Report of Collar and Root Rot of Lettuce Caused by in Serbia.

In March 2021, unusual plant stuning, collar, and wet root rot of lettuce ( L.) during the rosette stage was observed in two commercial fields in Serbia (44°58'N, 20°32'E; 44°45'N, 20°43'E). Disease incidence in the fields (≈ 0.

First report of Pseudomonas mediterranea causing tomato pith necrosis in Croatia.

In May 2021, a tomato producer reported an occurrence of a disease unknown so far in a greenhouse near Split, Croatia. About 30% of plants (cultivar Signora) have been affected. Symptoms resembled tomato pith necrosis, bacterial disease caused by Pseudomonas corrugata, known to occur sporadically in tomato greenhouse production in Croatia.

First Report of on lettuce in Serbia.

Lettuce ( L.) is the world's most popular leafy salad vegetable. One of the major challenges facing lettuce producers are fungal diseases that could, under favorable conditions, devastate the harvest (Raid, 2004).

First report of Pectobacterium versatile causing blackleg of potato in Serbia.

Potato blackleg is frequently observed on the production fields in the Bačka region of Vojvodina province, which is one of the largest potato-growing areas in Serbia. This disease usually occurs during June and July. In July 2020, blackleg symptoms in the form of stem necrotic lesions, vascular discoloration, hollow stems, and wilting of whole plants were noted on potato cultivar VR808 on a field 28 ha in size located in Maglić village (GPS coordinates 45.

First report of 'Candidatus Liberibacter solanacearum' on carrot in Serbia.

At the beginning of July 2020, three-month-old carrot plants (Daucus carota L. variety Maestro F1) grown in a commercial field 1.2 ha in size at the Begeč locality (45°14'30.

Оccurrence of bacterial spot caused by Xanthomonas arboricola pv. pruni on peach and apricot in Serbia.

Xanthomonas arboricola pv. pruni (Xap) causes bacterial spot of leaves and fruits, defoliation, fruit dropping and twigs, branches or trunk cankers in most cultivated and ornamental Prunus species. The bacterium is listed as an EPPO (European and Mediterranean Plant Protection Organisation) A2 quarantine pathogen.

Monilinia spp. Causing Brown Rot of Stone Fruit in Serbia.

Brown rot is one of the most important pre- and postharvest fungal diseases of stone fruit worldwide. In Serbia, where production of stone fruit is economically important, Monilinia laxa and M. fructigena are widely distributed.

Simultaneous detection of vaccinal and field infectious bursal disease viruses in layer chickens challenged with a very virulent strain after vaccination.

Infectious bursal disease virus is an important poultry pathogen. It is distributed worldwide and causes significant economic losses. In this study, a system was adopted for the simultaneous monitoring of vaccine and virulent strains using reverse transcription polymerase chain reaction (RT-PCR).