First report of bacterial spot (Xanthomonas cucurbitae) of pumpkin in Ontario, Canada

First report of bacterial spot caused by Xanthomonas cucurbitae on pumpkin in Italy

“…More recently, bacterial spot of pumpkins was reported in India, China and Nepal (Lamichhane et al , 2010). Bacterial spot of pumpkin is also present in other countries, such as the USA, where it may cause up to 90% crop loss in infected fields (Babadoost & Ravanlou, 2012) and in Canada (Trueman et al , 2014). Recently, the cause of leaf spot of pumpkin affecting fields in Styria (Austria) was attributed to a set of phytopathogenic bacteria, including X. cucurbitae (Huss, 2011), although no official identification was completed.…”

Effect of Inoculum Density and Methods of Inoculation on the Development of Bacterial Leaf Spot of Bottle Gourd and Pumpkin caused by Xanthomonas cucurbitae

“…The results were in accordance with findings of many workers who have reported that a bacterial concentration of 10 5 to 10 8 cfu/ml is able to incite pathogenic reaction in different cucurbit hosts. (Pruvost et al, 2009;Lamichhane et al, 2010;Jarial et al, 2011;Babadoost and Ravanlou, 2012;Dutta et al, 2013;Trueman et al, 2014). During present studies, syringe inoculation method proved best for the initiation and development of the disease, followed by pin prick and leaf margin methods of inoculation in both bottle gourd and pumpkin isolates of the pathogen.…”

Bacterial Leaf Spot of Cucurbits: A Menace to Cultivation

“…The disease causes great havoc in pumpkin fields leading to up to 90 per cent yield loss [29]. It has also been reported from the pumpkin fields of Canada leading to 60 per cent yield losses [30].…”