Locate seedbeds away from tobacco seedbeds. Control weeds in nightshade family. Apply foliar fungicide in seedling stage at 4-5 day intervals. Fixed or neutral copper. Leaves are yellow-green, mottled and dwarfed.
Plants are dwarfed.
Field symptoms can vary greatly, depending upon particular virus, strains of virus or combinations of viruses involved. Times of infection and other environmental conditions are also factors. Laboratory assays are necessary to determine particular viruses. Grower should consult seed catalog for current information on tobacco mosaic resistant varieties. However, these are not resistant to cucumber mosaic virus, so insecticides for aphid and other insect control must be used.