Influence of selected spray diluents on the efficacy of lambda-cyhalothrin against Heliothis virescens larvae (Lepidoptera: Noctuidae)

nsecticides have been applied to cotton in combination with a variety of diluents and agrichemicals. Preliminary studies suggested that one agrichemical or diluent can improve, have no effect, or decrease insecticidal activity compared with another diluent or agrichemical. This study investigated the effects of selected oil diluents (mineral, cottonseed and soybean) and foliar nitrogen fertilizers (urea and triazone) on the efficacy of ;The mortality of third instar H. virescens was higher on leaf-discs when ;Behavior of third instar H. virescens was observed on plants sprayed with ;In a field experiment, ;In spray chamber experiments with mixtures of foliar nitrogen fertilizers and ;Field experiments indicated very little or no change in efficacy of...