Rotations with vegetables other than members of the crucifer family will help to reduce presence of the bacteria in the soil. Fungicides used for black rot control will also help to control this organism. Leaves of infected plants are mottled and distorted. The entire plant is stunted and yields are reduced. Aphids transmit the virus from diseased plants and weeds to healthy plants.
Field sanitation is important.
At the end of harvest, diseased plants or those plants not harvested should be shredded and plowed under or tilled to reduce inoculum increase in an area. If diseased plants are left in place, aphid will continue to increase and as feeding pressure increases, winged forms develop and spread the virus to nearby mustard or turnip plantings. Control cruciferous weeds in and around the field or garden. Volunteer mustard and turnip plants should be destroyed. Table 1 .