Population studies of the citrus psylla,trioza erytreae: factors influencing dispersal |
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| Authors: | M A Van Den Berg Susan H Anderson Valerie E Deacon |
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| Institution: | 1. Citrus and Subtropical Fruit Research Institute, Private Bag XI 1208, 1200, Nelspruit, South Africa
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| Abstract: | More adults of the citrus psylla,Trioza erytreae (Del Guercio) (Hemiptera: Triozidae), dispersed when the number of eggs, nymphs or adults on the citrus increased (positive correlations) and also when new leaves that were present decreased (negative correlation). More psylla were trapped close to high obstacles than in an open area, even though the obstacles were at a distance from the psylla-infested orchard. |
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