Greenhouse Screening as Part of Insect and Disease Management
Resistance to pesticides has made control of insect and mite pests increasingly difficult in the greenhouse. In the case of pesticide failure, changing to a pesticide in a different chemical group may help. However,with aphids or western flower thrips,the number of pesticides which are effective and labeled for use in the greenhouse is uncomfortably small.
Source: • North Carolina Flower Grower's Bulletin Vol. 38 no. 4