| Titles |
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English :
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Factors affecting population of soft scale insect, pulvinaria - tenuivalvata (newstead) (Homoptera: Coccidae) in quena sugarcane fields
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Arabic :
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العوامل المؤثرة فى تعداد الحشرة القشرية الرخوة فى حقول قصب السكر بمحافظة قنا
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| Abstract |
The current study was carried out at two locallities (Esna and El-Namasa)in Quena govemorate (Upper Egypt) during 200512006 growing season, in order to study the effect of two irrigation systems (the drown and the surface irrigation development systems) on the population density of the red stripped soft scale insect Pulvinaria tenuivalvata. The population density of P. tunivalvata in drown system was 88 and 87 individual/30 leaves in Esna and EI-Namasa regions, while by using the surface irrigation development system, the population density was lower significantly with a mean of 38 and 41 individual/30 leaves in Esna and El-Namasa regions.
Three sugarcane varieties and a commercial variety were evaluated for their susceptibility to infestation with P. tenuivalvata. The varieties were pH/8013, F/160 and G.47187, and the commercial one was C9/54. Results showed that C9/54 was significantly the most susceptible to infestation with P. tenuivalvata, with a mean of 14.6 individuals in Esna, while it was 17.6 individuals/100 leaves in El-Namasa. Followed by G47/87 with mean of 8.7 and 10.3 individuals/10 leaves in Esna and EI¬Namasa. F/1 60 recorded a mean of 6.1 and 6.55 individuals/10 leaves in Esna and in EI-Namsa. PH/8013 was the least susceptible variety to infestation with a mean of 4.4 and 4.6 individuals/10 leaves in Esna and El-Namasa.
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| Publication year |
2007
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| Pages |
1501-1505
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| Availability location |
معهد بحوث وقايه النباتات
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| Availability number |
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| Organization Name |
Plant Protection Research Institute (PPRI)
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| City |
المنصورة
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| serial title |
مجلة جامعة المنصورة للعلوم الزراعية
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| ISSN |
1110-0346
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| Author(s) from ARC |
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| Agris Categories |
Pests of plants
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AGROVOC
TERMS |
Censuses.
Coccidae.
Factors of production.
Fields.
Homoptera.
Pulvinaria.
Sugarcane.
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| Publication Type |
Journal
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