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Egyptian Academic Journal of Biological Sciences, F. Toxicology & Pest Control
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Merghem, A., Mohamed, A. (2017). Impact of Neem Extracts, Azadirachta indica A. Juss Induced against Red Palm Weevil, Rhynchophorus ferrugineus (Olivier) Attacking Date Palm Orchards in Egypt. Egyptian Academic Journal of Biological Sciences, F. Toxicology & Pest Control, 9(3), 109-117. doi: 10.21608/eajbsf.2017.17032
Ahmed Merghem; Abd Al-Rahman Mohamed. "Impact of Neem Extracts, Azadirachta indica A. Juss Induced against Red Palm Weevil, Rhynchophorus ferrugineus (Olivier) Attacking Date Palm Orchards in Egypt". Egyptian Academic Journal of Biological Sciences, F. Toxicology & Pest Control, 9, 3, 2017, 109-117. doi: 10.21608/eajbsf.2017.17032
Merghem, A., Mohamed, A. (2017). 'Impact of Neem Extracts, Azadirachta indica A. Juss Induced against Red Palm Weevil, Rhynchophorus ferrugineus (Olivier) Attacking Date Palm Orchards in Egypt', Egyptian Academic Journal of Biological Sciences, F. Toxicology & Pest Control, 9(3), pp. 109-117. doi: 10.21608/eajbsf.2017.17032
Merghem, A., Mohamed, A. Impact of Neem Extracts, Azadirachta indica A. Juss Induced against Red Palm Weevil, Rhynchophorus ferrugineus (Olivier) Attacking Date Palm Orchards in Egypt. Egyptian Academic Journal of Biological Sciences, F. Toxicology & Pest Control, 2017; 9(3): 109-117. doi: 10.21608/eajbsf.2017.17032

Impact of Neem Extracts, Azadirachta indica A. Juss Induced against Red Palm Weevil, Rhynchophorus ferrugineus (Olivier) Attacking Date Palm Orchards in Egypt

Article 10, Volume 9, Issue 3, Summer and Autumn 2017, Page 109-117  XML PDF (432.44 K)
Document Type: Original Article
DOI: 10.21608/eajbsf.2017.17032
Authors
Ahmed Merghem1; Abd Al-Rahman Mohamed2
1Department of Wood borers and Termites, Plant Protection Research Institute
2Central Laboratory for Date Palm Research and Development, Agricultural Research Centre Giza, Egypt.
Abstract
Red palm weevil (RPW), Rhynchophorus
ferrugineus
(Olivier) (Coleoptera: Curculionidae) is considered to be the
most devastating boring pest attacking the date palm trees, Phoenix dactylifera
L. (Arecales: Arecaceae). During this study the date palm orchards were
investigated at Ismailia governorate in Egypt to throughout 2015-2016 and
results revealed the wide distribution of RPW with high infestation rates at
the visited localities. Rates and degrees of infestation were detected through
the attacked spots showing a direct proportional rate with the total planted
date palm trees in each location recording a highest infestation rate of 91.6%
and a maximum infestation degree was 3.4 hole/ tree. Least average infestation
levels were 14.9% and 1.19 hole/ tree. Extracts of neem seeds, Azadirachta indica A. Juss(Sapindales:
Meliaceae)
were tested in the laboratory against the RPW stages using organic solvents in
addition to the commercial Nemazal brand as a comparison treatment. Laboratory
experiments revealed a potential effect of the used titers againstboth adult and larval R. ferrugineus stagesresulting in high mortality rates reached 85.4 and 79.5%
on average for larval and adult stages, respectively. Consequent field trials
with such agents were conducted on both remedial and protective scales
revealing a considerable reduction of infestation was 60.8% and 53.1% repellency
on average for all applied treatments. Field trials proved the possibility of
those treatments usage in the control programs of that borer in Egypt.
Keywords
Rhynchophorus ferrugineus; Phoenix dactylifera; Egypt; Neem tree Extracts; Azadirachta indica
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