Tobacco Mosaic Virus | Introduction | Control

The virus can persist in plant or root debris in dry soil for periods of over 2 years (1 month in most soils). Plants get contaminated through minor wounds in roots. The virus can spread via infested seeds, seedlings, weeds, and contaminated plant parts. Wind, rain, grasshoppers, small mammals, and birds can also transport the virus between fields. Bad cultural practices during plant handling favor virus transmission, too. Day length, temperature, and light intensity, as well as plant variety and age, determine the severity of the infection.

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