1Department of Plant Pathology, Sri Venkateswara Agricultural College, Acharya N.G. Ranga Agricultural University, Tirupati-517502, Andhra Pradesh, India
2Regional Agricultural Research Station, Acharya N.G. Ranga Agricultural University, Tirupati-517502, Andhra Pradesh, India
3Institute of Agriculture & Natural Sciences, DDU Gorakhpur University, Gorakhpur-273009, Uttar Pradesh, India
*Corresponding author e-mail: Madem Gurivi Reddy (gurivipath@gmail.com)
Online Published on 19 April, 2023.
A study was conducted to observe the effect of dates of sowing, insect vector population, and weather parameters on sesame phyllody disease incidence in “kharif” and late “rabi” seasons in 2021 in Andhra Pradesh. The lowest disease incidence of 62.05% in August and the maximum disease incidence of 81.87% was observed in mid-June sown crop. However, the disease incidence was negligible in late “rabi” (winter) season sown crops. The leafhopper vector Hishimonus phycitis population was significantly and positively correlated with the disease incidence in all dates of sowing. During “kharif” season weather parameters like maximum and minimum temperature, morning and evening relative humidity except rainfall showed significant correlation with the disease incidence. However, in late “rabi” season as the disease incidence was significantly lower or negligible, no conclusion can be drawn from the data collected.
Epidemiology, Phytoplasma disease, Insect vector, Monitoring
