QUANTIFICATION OF THE ATTACK PRODUCED BY SPHAEROTHECA PANNOSA (WALLR.) LEV. COUSIN. ROSAE WORON AND DIPLOCARPON ROSAE WOLF IN SOME ROSE VARIETIES

Abstract

In order for rose plants to develop normally, one of the conditions is the timely detection of attacks of damaging agents, an important place within which belongs to the phytopathogens Sphaerotheca Pannosa (Wallr.) Lev. Var. Rosae Woron and Diplocarpon Rosae Wolf. Quantifying the effect of the attack of pathogens Sphaerotheca pannosa and Diplocarpon rosae on the monitored rose varieties, revealed changes in some biological failures related to the ratio of the length / width of the leaflets and the diameter of the flower compared to the same parameters in the case of unattached organs.