Abstract
Canola (Brassica napus L. var. oleifera) is an oilseed that has been being incorporated to the in culture rotation systems in our country, mainly in the South region by evidency of good adaptation to the existing edaphiclimatic characteristics. Leafhoppers belonging to the Cicadellidae represent an important phytopathogens vector group with ocurrence in several cultures. The group, with limited food to the xylem, transmits the bacterium Xylella fastidiosa to the citrus, grapevine, coffee and plum. For the canola cultivation in the country there aren’t studies about leafhoppers acting as phytopathogens vectors. The purpose of this research was to identify the species of leafhoppers (Cicadellidae: Cicadellinae) associated to the cultivation of canola in Vacaria, Rio Grande do Sul State, as well as to estimate the fluctuation population of group. The experiment was conducted in an area of 1 ha of Brassica napus L. var. oleifera (cultivar PFB-2) at the Fundacao Estadual de Pesquisa Agropecuaria (FEPAGRO). Collections were effected with yellow stick traps (8,5 x 12,25 cm) allocated in 20 places, with replace every 15 days from May to October, 2010. Nine species were identified, including in Cicadellini and Proconiini, with Bucephalogonia xanthophis being the most representative specie (78%). The group population peak was in May.
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