THE INFLUENCE OF THE TREATMENT WITH FUNGICIDES ON THE PHYSIOLOGICAL PROCESSESIN THE ROSE PLANTS (ROSA SP.) ATTACKED BY THE PHRAGMIDIUM MUCRONATUM (PERS.) SCHLTDL.

Abstract

The influence of the treatment with fungicides on the physiological processes were observed in the rose plants (Rosa sp.) cultivated in the climatic conditions in Olteniaregion.The physiological researches were performed on August 15^th 2021, both for plants treated with Topsin M70 (0,1%) and Dithane M45 (0,2%), in four phases, at 7 days interval and also for the plants attacked by Phragmidiummucronatum (Pers.) Schltdl. in which treatments have not been performed. The photosynthesis intensity and transpiration intensity record lower values as a result of the effects produced by the pathogen manifested by the appearance yellow-orange pustules (urediniospores) and the brown or black pustules (teliospores). In the leaves of the plants analysed after performing treatments with fungicides it was registered a higher water content and clorophyll content, in comparison with the plants in which fungicide treatments have been performed.