نتایج جستجو برای: Icerya purchasi
تعداد نتایج: 55 فیلتر نتایج به سال:
Icerya purchasi threatens
Predators are generally considered to be less effective biological control agents than parasites (DeBach, 1964). The famous exception is the control of the cottony-cushion scale, Icerya purchasi Maskell, by the ladybird beetle Rodolia cardinalis (Mulsant). This outstanding success resulted in the widespread and haphazard introduction of ladybird beetles. However, aphidophagous species of ladybi...
The cottony Cushion Scale, Icerya purchasi Mask., is a polyphagous, cosmopolitan and destructive pest that infests more than 200 plant species apart from citrus. Laboratory studies were carried out on the orange at three temperatures, 17±1, 27±1 and 40±1°C 65±5% RH and 14:10 (L:D). The duration of nymphal stages, female longevity and the life cycle at 17±1°C were 85.8±3.83, 74.9±3.53 and 173.6±...
The cottony Cushion Scale, Icerya purchasi Mask., is a polyphagous, cosmopolitan and destructive pest that infests more than 200 plant species apart from citrus. Laboratory studies were carried out on the orange at three temperatures, 17±1, 27±1 and 40±1°C 65±5% RH and 14:10 (L:D). The duration of nymphal stages, female longevity and the life cycle at 17±1°C were 85.8±3.83, 74.9±3.53 and 173.6±...
Aim . To study the possibility of using cryptolemus in an integrated system for combating Australian grooved worm conditions southern coast Crimea. Material and Methods The population Icerya purchasi Mackall on plants was determined during regular surveys agrobiocenoses by counting number pest individuals per unit area. biological effectiveness from unique scientific installation «State collect...
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