Habshy, A., Elsamed, A., Amer, S. (2020). SEASONAL FLUCTUATIONS AND GENERATIONS NUMBRER OF TORTOISE BEETLE, CASSIDA VITTATA (Vill.) INFESTING SUGAR BEET PLANTS AND THE SOME ASSOCIATED PREDATORS, EGYPT. test, 5(1), 1-15. doi: 10.21608/mjapam.2020.169576
Aml Z. N. Al – Habshy; A. A. Abd – Elsamed; S. A. M. Amer. "SEASONAL FLUCTUATIONS AND GENERATIONS NUMBRER OF TORTOISE BEETLE, CASSIDA VITTATA (Vill.) INFESTING SUGAR BEET PLANTS AND THE SOME ASSOCIATED PREDATORS, EGYPT". test, 5, 1, 2020, 1-15. doi: 10.21608/mjapam.2020.169576
Habshy, A., Elsamed, A., Amer, S. (2020). 'SEASONAL FLUCTUATIONS AND GENERATIONS NUMBRER OF TORTOISE BEETLE, CASSIDA VITTATA (Vill.) INFESTING SUGAR BEET PLANTS AND THE SOME ASSOCIATED PREDATORS, EGYPT', test, 5(1), pp. 1-15. doi: 10.21608/mjapam.2020.169576
Habshy, A., Elsamed, A., Amer, S. SEASONAL FLUCTUATIONS AND GENERATIONS NUMBRER OF TORTOISE BEETLE, CASSIDA VITTATA (Vill.) INFESTING SUGAR BEET PLANTS AND THE SOME ASSOCIATED PREDATORS, EGYPT. test, 2020; 5(1): 1-15. doi: 10.21608/mjapam.2020.169576

SEASONAL FLUCTUATIONS AND GENERATIONS NUMBRER OF TORTOISE BEETLE, CASSIDA VITTATA (Vill.) INFESTING SUGAR BEET PLANTS AND THE SOME ASSOCIATED PREDATORS, EGYPT

Menoufia Journal of Plant Protection
Article 1, Volume 5, Issue 1, January and February 2020, Pages 1-15    PDF (328.01 K)
Document Type: Original Article
DOI: 10.21608/mjapam.2020.169576
Authors
Aml Z. N. Al – Habshy; A. A. Abd – Elsamed; S. A. M. Amer
Plant Prot. Res. Inst., Agric. Res. Cent., Dokii, Giza, Egypt
Abstract
Seasonal  fluctuations and number of  generations of  Cassida vittata (Vill)(eggs, larvae and adults) and seasonal fluctuation of the some associated predators, Coccinella undecimpunctata (L.), Paederus alfierii (Koch.), Chrysoperla Carnea (Stephens),  Scymnus sp.andtrue spiders were studied at Diarb- Nigm district, Sharkia Governorate, during the two sugar beet plants seasons 2015/2016 and  2016/2017.  The seasonal fluctuation of C. vittata (adults, eggs and larvae) on sugar beet plants recorded two peaks during each seasons. Peaks of eggs were recorded in 7th of March and 4th of April in the first season, while in the second season, these peaks were noticed in 6th of March and 17th of April. Peaks of   larvae were recorded in 21th of March and 2nd of May in the first season, while in the second season, these peaks were noticed in 20th of March and 1st of May. Peaks of adults were recorded in 11th of April and 2nd of  May in the first season, while in the second season, these peaks were noticed in 3rd of  April and 1st of May. C. vittata eggs, larvae and adults were recorded were recorded three generations for the two seasons. The peak of C. undecimpunctat and P. alfierii was occurred in 21th of March and 20th of March for the first and second seasons. The peak of C. Carnea was recorded in 14th of March and 13th of March for the two seasons. The peak of true spiders was recorded in 11th of April and 17th of April for the two seasons. The numbers of Scymnus sp was decreased for the two seasons. The relation ship between (adults, eggs and larvae) numbers and mean maximum, minimum temperature and RH%.
Keywords
Sugar beet plants; seasonal fluctuations; generations; Cassida vittata; predators
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