ASCOCHYTA PISI ZAMBURUG‘INING RIVOJLANISHIGA FUNGITSIDLARNING TA’SIRI

This study is dedicated to evaluating the effectiveness of fungicides from various chemical groups against the fungus Ascochyta pisi, which causes the widespread ascochytosis disease in mung bean (Vigna radiata L.) plants, under in vitro conditions. The rapid development of the disease, high adaptability, and extensive spread in plant tissues make it one of the most dangerous pathogens in mung bean cultivation. Therefore, identifying effective fungicides plays a crucial role in developing a disease control system. The study compared the ability of single-component (azoxystrobin) and two-component combined fungicides - tebuconazole, pyraclostrobin + boscalid, carbendazim + azoxystrobin, fludioxonil + cyprodinil - to inhibit the growth of A. pisi fungal colonies. According to the results, although all fungicides exhibited antifungal effects to some degree, their effectiveness varied significantly. The highest inhibition was observed in the combinations of fludioxonil + cyprodinil (84.1%) and pyraclostrobin + boscalid (81.4%). Tebuconazole (77.8%) and carbendazim + azoxystrobin (78.5%) demonstrated high biological activity, while the single-component form of azoxystrobin showed relatively low effectiveness (71.0%). The study results indicated that the fungicides fludioxonil + cyprodinil and pyraclostrobin + boscalid are among the most effective agents against the development of the fungus A. pisi. These preparations can significantly reduce the spread of ascochyta blight in mung bean crops when applied in the early stages of the disease or as a preventive measure.