These measures help control the incidence and spread of viruses transmitted by green peach aphid but do little in controlling the aphid itself. Avoid planting new fields of sugarbeet until nearby virus-infested fields have been harvested. Harvest severely infested fields first. Aphid sampling should always include an evaluation of the presence and activity of natural enemies. Treatment thresholds for green peach aphid, as a pest in its own right, are not well established.
Heavy populations can do extensive damage, particularly on seedlings or young plants.
Treatments should probably be considered on plants less than 12 weeks of age when aphids are present in numbers sufficient to cause stunting. Older plants can tolerate considerably more aphids and if heavy infestation occurs 3 to 4 weeks before harvest, harvest the field instead of spraying. The green peach aphid has developed high levels of resistance to many of the insecticides used for its control. These insecticides may provide only partial control. Do not feed tops or silage to dairy cattle.