Late blight symptoms severity on chosen tomato cultigens under natural <i>P. infestans</i> field infections.

aData were collected from 2009 to 2013 in two locations (Skierniewice, Boguchwała). bThe disease assessment scale is based on the % area of leaf and stem infection (1 = 100% percent area infected; 9 = lack of symptoms or few small necrotic spots). Disease symptoms were scored yearly, when LB susceptible control ‘Rumba’ reached maximal intensity of LB symptoms. Data presented is the mean ± SD from DSI recorded on leaves and stems. LSD0.05 calculated according to Tukey procedure for comparing cultigens in each year and in either location: 0.76, and for comparing cultigens in each year and between locations: 0.55. Late blight symptoms severity on chosen tomato cultigens under natural P. infestans field infections.