Growers may be seeing a lot of aphids in some tobacco fields. At this point in the season, the time left until topping is the major factor to consider when making a decision on aphid control. Yield and quality losses to aphids occur gradually – from the onset of infestation, about six weeks after transplant, until topping. Most of the loss is due to reduced leaf size and weight from heavy infestations. There is little chance for return from attempting to control heavy infestations just before harvest. The loss has already occurred.
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