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All Journal Andalasian International Journal of Entomology
Moustafa Mohamed Sabry Bakry
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology

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Climate and Plant Phenology (Plant Age and Growth Stage) Influence of Rhopalosiphum Padi L. Abundance on Wheat Plants in Luxor Governorate, Egypt Moustafa Mohamed Sabry Bakry; Amr M. M. Badawy; Lamiaa H.Y. Mohamed
Andalasian International Journal of Entomology Vol. 2 No. 1 (2024)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/aijent.2.1.24-37.2024

Abstract

Field experiments were conducted at El-Mattana Agricultural Research Station, Luxor Governorate, during two successive wheat growing seasons (2017/18 and 2018/19). This was to study the seasonal abundance of Rhopalosiphum padi (Hemiptera: Aphididae) on wheat plants (Giza 171 cultivar). We also investigated the effects of climate and plant phenology on the R. padi population density. Results indicated that R. padi infested wheat plants from December 17, 2017, until April 8, 2018, within the first growing season (2017/18), and from Jan. 27th, 2019, up to April 13th, 2019, within the second growing season (2018/19). The cumulative counts of R. padi in growing season one was 9486.17, and in growing season two, 3444.00 individuals. The mean population of R. padi per 10 tillers over the whole first season was 80.12 ± 7.90, and for the second season, 42.36 ± 2.96. The first season, December, January, and February, had the most favorable climate for R. padi population growth (measured during weekly inspections). In contrast, February and March were more favorable in the second season. R. padi was not detected on the wheat during the wheat maturation period within both growing seasons. The combined effects of climate and plant phenology strongly correlate with R. padi population density, with explained variance (EV) of 93.86% in the first season and 99.11% in the second season. Daily mean maximum temperature was the most influential variable explaining changes in total R. padi population, with EV 28.37%in the first season and 28.62% in the second season. The data provided here can assist in the design of Integrated Pest Management (IPM) programs for aphid control on wheat plants.
Insect Diversity in Siam Citrus Plantations (Citrus nobilis Lour.) in Sungkai, Padang City, Indonesia Hidrayani; Tuty Hardianti; Yunisman; Ikhsan, Zahlul; Moustafa Mohamed Sabry Bakry
Andalasian International Journal of Entomology Vol. 3 No. 1 (2025)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/aijent.3.1.48-60.2025

Abstract

Insect diversity in plantations is crucial for understanding the ecological roles of each species and managing pest-related issues. This study aimed to assess the diversity of insects in Siam citrus (Citrus nobilis Lour.) plantations in Sungkai, Padang City, Indonesia, focusing on the implications for pest management. A survey was conducted in the Siam citrus plantation, categorizing sampling sites into three groups based on the distance from the forest (20, 40, and 60 m from the forest). Insect samples were collected by spraying the plants with insecticides, hand-picking, and trapping insects on a white cloth. The results showed that the number of insect species found at the sites was 19, 18, and 12 at 20, 40, and 60 m from the forest, respectively. The species identified included Bractocera spp., Toxoptera sp., Aphis gossypii, Bothrogonia sp., Planococcus citri, Sanurus sp., Rhynchocoris humeralis, Conocephalus sp., and Valanga nigricornis as pests, and Blattella sp., Hemithyrsocera sp., Coccinella transversalis, Nylanderia sp., Polyrhachis sp., Dolichoderus sp., Anoplolepis gracilipes, Hierodula sp., and Hierodula sp1 as predators, with Lasioglossum sp. identified as a pollinator. The species diversity at each site was categorized as medium, with diversity index values of 2.10, 2.07, and 1.95, respectively. Species evenness was categorized as high, with index values of 0.71, 0.72, and 0.78, respectively. This study provides valuable data on the pest and predator populations in citrus plantations, which can inform sustainable pest management strategies to improve crop health and productivity.
Co-Authors Amr M. M. Badawy Hidrayani Lamiaa H.Y. Mohamed Tuty Hardianti Yunisman Zahlul Ikhsan