 Cultural practices such as crop rotation have also been found to be fairly effective methods of avoidance.The symptoms of viruses, no matter what host or strain, mainly cause mosaic and rugosity; therefore, there is no accurate way to determine what virus may be the cause of the disease just by looking at the symptoms.Viruses are so small and most farmers don't have the right equipment, it makes it hard for them to determine what virus is responsible for the disease in their field.