Laboratory and Field Evaluation of Sampling Techniques for the Nymphal Stages of the Potato Leafhopper on Alfalfa12

摘要: A sampling method that uses dichlorvos squares (1.2 cm2) in paper ice cream cartons (0.95 liter) was developed to evaluate nymphal populations of Empoasca fabae (Harris) on alfalfa. Samples collected the field and placed carton were quickly handled laboratory, nymphs lid easily sorted counted under a stereomicroscope. In laboratory tests, this shown be greater than 90% efficient extracting from The sample unit 3-stem bouquet per with 24-h exposure period. trials, dichlorvos-carton more effective determining abundance sweep net, D-Vac® suction collector, drop trap method, shake pan or direct observation.