Research concerning the response of some pear varieties to the attack by Erwinia amylovora, a pathogen that causes the fire blight, was carried out on an intensive pear tree plantation on Farm No. 3 Lugoj of the Banat’s University of Agricultural Sciences and Veterinary Medicine of Timisoara, Romania, in the soil and climate conditions of 2012. The following pear tree varieties were subjected: Aromat de Bistriţa, Conferance, Favorita lui Clapp, Napoca, Cüre, and Euras. Observations made on pear shoots and fruits show that the variety Euras was not attacked by the pathogen Erwinia amylovora that produces fire blight in apple, pear, and quince. Of the five varieties studied, the pear variety Aromat de Bistriţa was the most severely attacked by this pathogen, while the pear varieties Conferance and Cüre had shoots and fruits resistant to the attack. Based on the research carried out, the authors recommend the extension of the cultivation of the pear varieties Euras, Conferance and Cüre, while the pear varieties Aromat de Bistriţa, Napoca and Favorita lui Clapp need prevention measures and integrated therapy to face the attack by the bacterium Erwinia amylovora..

pathogen, attack, attack rate, frequency, experience

biology

Presentation: poster