date:Sep 23, 2019
in central and eastern mainland Spain from 2015 to 2017.
Two psyllid species, Bactericera trigonica and Bactericera nigricornis were found on carrot and potato crops. In carrot fields the most abundant species was B. trigonica (occurring from crop emergence to harvest), whereas in potato crops the most abundant psyllid was B. nigricornis - the scientists explain - Depending on field location, the maximum psyllid populations occurred between June and October. Since B. nigricornis was found on b