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Department of Plant Pathology, S.V. Agricultural College, ANGRAU, Tirupati-517 502.
The reasons for sudden outbreak of yellow mosaic disease of pigeon pea in isolated patches in Andhra Pradesh during Kharif 2021 was not known. It may be due to association of more than one begomovirus with YMD of pigeon pea or variations in virus or climatic factors or vector biotypes in symptomatology was not known. Roving survey of yellow mosaic disease in pigeon pea was conducted from major growing districts of Andhra Pradesh during December-2022 to January -2023. The symptomology of yellow mosaic disease in redgram was characterized by small yellow diffused spots on the leaves which gradually enlarged to form broad yellow patches. The percent disease incidence ranged from 2-23%. The overall incidence of YMD of Pigeon pea was very low though enough population of whiteflies were observed in the fields and source of inoculums was present on weeds and other pulses grown where the incidence goes upto 100%. Understanding the severity of a disease is crucial for advancing research and gaining valuable insights for further studies..
KEYWORDS: Yellow mosaic disease, begomovirus, survey, percent disease incidence.