ISHS Acta Horticulturae 347: II International Symposium on Integrated Fruit Production
INTEGRATED CONTROL OF THE LONGTAILED MEALYBUG, PSEUDOCOCCUS LONGISPINUS (TARGIONI-TOZZETTI) (HEMIPTERA: PSEUDOCOCCIDAE) IN AUSTRALIAN PEAR ORCHARDS |
| Author: | Ian C. Barrass |
| Abstract:
Longtailed mealybug, Pseudococcus longispinus is a pest in fresh and processing pear crops. It is capable of reaching high levels of infestation in commercial orchards and reducing the value of fruit through uneven ripening or the unsightly signs of its presence. P. longispinus has three or four distinct generations per year. The population is composed of individuals at similar stages which move to different types of sites on the tree according to their stage of development. Applications of parathion-ethyl timed to coincide with the period when most P. longispinus are at the second instar stage and in exposed locations on the foliage significantly reduces populations (P<0.05). The parasitoid wasp Tetracnemous sydneyensis colonised and persisted in the experimental block demonstrating its ability to become part of an integrated control system for P. longispinus. | |
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