Population dynamics of the coccid scale ,Pulvinaria tenuivalvata (Hemiptera: Coccidae), its infestation rate and survey predators and parasitoid associated were
conducted through careful inspection of suqar-cane fields in Attfieh, Giza governorate
during two successive seasons (200212003 and 2003/2004). Nymphal infestation started from apical part of plant in June in the first season
(200212003) and in may in the second one(2003/2004). In first season infestation
percentage ranged between 61.3%, to reach 100% infestation in September and
October while it ranged between 30.6%t0100% in second season. Adult infestation started in July on apical part of sugar-cane plant with infestation
percentage 35% t0100% and from 53.7 %100% infestation in first and second season,
respectively .In both season infestation disappear in January. Negative Correlation
found between the population density of sugar-cane insect scale ,P. tenuivalvata and
temperature. The population growth rate decreased in November to February and it
ranged between -52.12 and -100 insect scales in the first season 200212003 while it
was -91.82 and 100 - insect scales in the. second season 2003/2004.