THE RED-STRIPED SUGAR-CANE SOFT SCALE, Pulvinaria tenuivalvata (NEW STEAD) (HEMIPTERA: COCCIDAE) AS A NEW PEST ATTAKING SUGAR CANE IN GIZA REGION.

EI-Shazly,, E. A.; Ismail, I. A.; Abdel-Rahman, R. S.

doi:10.21608/jppp.2004.240002

THE RED-STRIPED SUGAR-CANE SOFT SCALE, Pulvinaria tenuivalvata (NEW STEAD) (HEMIPTERA: COCCIDAE) AS A NEW PEST ATTAKING SUGAR CANE IN GIZA REGION.

Document Type : Original Article

Authors

¹ Dept., of Economic Entomology and pesticides FAC. of Agric., Cairo Un lv, Giza, Egypt.

² Pests and Plant Protection Dept. National Research Centre,Dokki, Cairo,Egypt

10.21608/jppp.2004.240002

Abstract

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.