DETERMINATION OF PATHOGENIC FUNGI CAUSING ROOT ROT DISEASE IN COTTON CULTIVATED AREAS OF TURKEY AND STUDYING THE EFFECTIVENESS OF FUNGICIDES AGAINST THEM

This experiment was carried out in 2021 in order to study the prevalence levels of fungal pathogens that cause root rot disease in Soke district of Aydin province, which is the leading cotton producer in the Republic of Turkey, and to determine the effectiveness of some biological and chemical preparations against these pathogens in field climate conditions. Rhizoctonia solani, Fusarium spp. Pythium spp. and pathogens such as Macrophomina phaseolina were isolated. When the distribution of the isolated pathogens was studied in the region, Rhizoctonia solani was detected in all sampled fields and it was noted that it was the most common pathogen with a 100% result. 3 biological and 2 chemical preparations were tested against these pathogens under field conditions and the highest efficacy was Rizolex-T (75.17%), Dynasty CST (68.21%), Subtilex Foliar (64.22%), T-22 Planter Box + ERS (61.56 %) and T-22 Planter Box (60.71%) variants.