Home Articles List Article Information
Journal of Plant Protection and Pathology
Journal Archive
Volume Volume 16 (2025)
Volume Volume 15 (2024)
Volume Volume 14 (2023)
Volume Volume 13 (2022)
Volume Volume 12 (2021)
Volume Volume 11 (2020)
Volume Volume 10 (2019)
Volume Volume 9 (2018)
Volume Volume 8 (2017)
Volume Volume 7 (2016)
Volume Volume 6 (2015)
Volume Volume 5 (2014)
Volume Volume 4 (2013)
Volume Volume 3 (2012)
Volume Volume 2 (2011)
Volume Volume 1 (2010)
Volume Volume 34 (2009)
Volume Volume 33 (2008)
Volume Volume 32 (2007)
Volume Volume 31 (2006)
Volume Volume 30 (2005)
Volume Volume 29 (2004)
Volume Volume 28 (2003)
Volume Volume 27 (2002)
Volume Volume 26 (2001)
Volume Volume 25 (2000)
El-Naggar,, M. (2007). FACTORS AFFECTING POPULATION OF SOFT SCALE INSECT, Pulvinaria tenuivalvata (NEWSTEAD) (HOMOPTERA: COCCIDAE) IN QUENA SUGARCANE FIELDS. Journal of Plant Protection and Pathology, 32(2), 1501-1505. doi: 10.21608/jppp.2007.219432
M. A. Z. El-Naggar,. "FACTORS AFFECTING POPULATION OF SOFT SCALE INSECT, Pulvinaria tenuivalvata (NEWSTEAD) (HOMOPTERA: COCCIDAE) IN QUENA SUGARCANE FIELDS". Journal of Plant Protection and Pathology, 32, 2, 2007, 1501-1505. doi: 10.21608/jppp.2007.219432
El-Naggar,, M. (2007). 'FACTORS AFFECTING POPULATION OF SOFT SCALE INSECT, Pulvinaria tenuivalvata (NEWSTEAD) (HOMOPTERA: COCCIDAE) IN QUENA SUGARCANE FIELDS', Journal of Plant Protection and Pathology, 32(2), pp. 1501-1505. doi: 10.21608/jppp.2007.219432
El-Naggar,, M. FACTORS AFFECTING POPULATION OF SOFT SCALE INSECT, Pulvinaria tenuivalvata (NEWSTEAD) (HOMOPTERA: COCCIDAE) IN QUENA SUGARCANE FIELDS. Journal of Plant Protection and Pathology, 2007; 32(2): 1501-1505. doi: 10.21608/jppp.2007.219432

FACTORS AFFECTING POPULATION OF SOFT SCALE INSECT, Pulvinaria tenuivalvata (NEWSTEAD) (HOMOPTERA: COCCIDAE) IN QUENA SUGARCANE FIELDS

Article 8, Volume 32, Issue 2, February 2007, Page 1501-1505  XML PDF (343.48 K)
Document Type: Original Article
DOI: 10.21608/jppp.2007.219432
View on SCiNiTO View on SCiNiTO
Author
M. A. Z. El-Naggar,
Plant Protection Research Institute, Agriculture Research Center, Giza, Egypt
Abstract
The current study was carried out at two locallities (Esna and El-Namasa)in Quena governorate (Upper Egypt) during 2005/2006 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 El-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.47/87, 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 El-Namasa. F/160 recorded a mean of 6.1 and 6.55 individuals/10 leaves in Esna and in El-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.
Statistics
Article View: 71
PDF Download: 219