Ragab Shaker Abd El Rahman Mohamed <br/><br/>
Certain ecological and biological aspects of the red - striped soft scale insect pulvinaria tenuivalvata newstead infesting sugarcane /  
 بعض الخواص البيئية والبيولوجية للحشرة القشرية الرخوة Pulvinaria tenuivalvataالتى تصيب قصب السكر 
Ragab Shaker Abd El Rahman Mohamed ; Supervised Ezz_ElDine Abd El Samea ElShazly , Ismail Abd El Khalek Ismail 
 - Cairo :   Ragab Shaker Abd El Rahman Mohamed ,   2006 
 - 215p ;   ill ;   25cm 
<br/><br/>Thesis (M.Sc.) - Cairo University - Faculty Of Agriculture - Department Of Economic Entomology and Pesticides 
<br/><br/> The red - striped soft scale insect Pulvinaria tenuivalvata attacking sugar - cane at Attfieh region , Giza Governorate is considered an economic important insect pest on sugar - cane in Egypt recentlyThe main topics of this present study can be summarized as follows : Population dynamics of Ptenuivalvata , its rate of growth and survey of predators and parasitoids associated were conducted through careful inspection of sugar - cane fieldsNymphal infestation started from apical part of plant in the two studying seasonsAlso , adult infestation started on apical part of sugar - cane plant in first and second seasonsIn both seasons infestation disappear from January to the end of seasonNegative Correlation was found between the population density of Ptenuivalvata and temperature 
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<br/><br/><label>Subjects--Index Terms: </label>Biology Host Control Ecology Pulvinaria