Epidemiological Studies on Yellow Mosaic Disease of Soybean

Studies on soybean yellow mosaic revealed that field near irrigation canal, water points, low lying areas and foot hills were found to be high disease incidence as compared to field located in un-irrigated plain areas/peremial plants species like Paracalyx scubiosus. The disease spread fast during 30–60 days after sowing. Disease development in soybean during 50 DAS was favoured by sunshine (correlation coefficient 0.672) and high temperature (C.C. 0.709). Regression equatiions drawn indicated epidemic development of the disease 50–60 days after sowing.