Arab Journal of Plant Protection最新文献

{"title":"The Effect of the Hight of the Pheromone Traps Type Delta in Trapping and Forecasting the Emergence of the Lesser Date Moth, Batrachedra amydraula Meyrick and Evaluating the Sensitivity of Some Palm Varieties to Insect Injury","authors":"Mohamad Hamid Abed Felahy, Mohamad Shaker Mansour","doi":"10.22268/ajpp-41.3.226232","DOIUrl":"https://doi.org/10.22268/ajpp-41.3.226232","url":null,"abstract":"El-Filahy, M.H.A. and M.Sh. Mansour. 2023. The Effect of the Hight of the Pheromone Traps Type Delta in Trapping and Forecasting the Emergence of the Lesser Date Moth, Batrachedra amydraula Meyrick and Evaluating the Sensitivity of Some Palm Varieties to Insect Injury. Arab Journal of Plant Protection, 41(3): 226-232. https://doi.org/10.22268/AJPP-41.3.226232 During the 2021-2022 season field study conducted in Anbar governorate to determine the population dynamics of Batrachedra amydraula using pheromone traps (Alpha scenes Inc. West Linn) and the effect of trap height on number of male insects traped. In addition, host preference and sensitivity of date palm varieties to infestation with the insect was also evaluated. The results obtained showed that the first appearance of the insect was at the end of the third week of March with an average of 2 insects/trap at a temperature of 16.5°C and 51.5% RH. The number of insects caught in the trap reached a peak during the first week of June at an average of 139 insect/trap, at a temperature of 32°C and 42% RH. The insect count then decreased after the third week of June to zero insects/trap until the third week of July. Field experiments also showed that the traps height had an effect on the number of insects caught. The average number of total insects caught in traps at 1.5 m was 45.5, whereas the average number of insects caught in traps placed at 2.5 m was 20.5. The results also showed that the highest total infestation rate in the Khistawi variety was 36.89%, followed by Zahdi (18.83%). The infestation rate of the variety kheyara was the lowest (12.61%). The results also showed the average larval density of the insect Batrachedra amydraula was the highest on the khestawi variety with total average injury severity of 0.14%, followed by zahdi variety with an average total injury severity of 0.05%. Therefore, by combining the infestation rate and average number of the insect larvae, it can be concluded that the Khistawi variety was the most sensitive to the insect, and the variety Kheyara was the most tolerant. In addition, the use of pheromone traps was instrumental in reducing the injury caused by the insect, and using resistant/tolerant varieties can effectively contributes to the reduction of the infestation rate of the insect to become below the economic injury level. Keywords: Date palm, Phoenix dactylifera L., Lesser date moth Batrachedra amydraula, Pheromone traps, Variety sensitivity","PeriodicalId":37670,"journal":{"name":"Arab Journal of Plant Protection","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135736528","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Efficacy of Silica Nano-Particles on the Inhibition of Oviposition of Tomato Borer, Tuta absoluta","authors":"Ritta A.L. Hayek, Samir Tabbache, Ahmad Ibrahim Kara Ali, Mohammad Ahmad","doi":"10.22268/ajpp-41.3.278280","DOIUrl":"https://doi.org/10.22268/ajpp-41.3.278280","url":null,"abstract":"Hayek, R.A.L., S. Tabbache, A.I.K. Ali and M. Ahmad. 2023. The Efficacy of Silica Nano-Particles on the Inhibition of Oviposition of Tomato Borer, Tuta absoluta. Arab Journal of Plant Protection, 41(3): 278-280. https://doi.org/10.22268/AJPP-41.3.278280 A laboratory experiment was conducted to examine the efficacy of silica nano-particles (SNPs) at 500 and 1000 ppm concentrations on oviposition of Tuta absoluta. One month old tomato plants in pots were used and randomly placed in wooden cages (4 pots/cage). Five pairs of adult insects (males and females) were released in each cage. The number of eggs laid by females was recorded four days after insects release. Results showed that SNPs had an inhibitory effect on egg laying by Tuta absoluta, at all tested concentrations. SNPs treatment caused a decrease in eggs number by 71.17, 59.45 and 51.35%, respectively, at 1000, 750 and 500 ppm concentrations, compared with the control. It can be concluded that nano-silica has a potential use as an insecticide to control Tuta absoluta. Keywords: Tomato borer, Egg-laying inhibition, Scanning electron microscope, Silica nano particles","PeriodicalId":37670,"journal":{"name":"Arab Journal of Plant Protection","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135736526","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Field Evaluation of a Commercial Biopesticide in Comparison with a Conventional Insecticide Against Spodoptera littoralis (Boisduval) and Scrobipalpa ocellatella (Boyd) Sugar Beet Insect Pests and their Effect on the Associated Predators","authors":"Abdelsalam A. Farag, Ahmed H. El Kenawy, Elsayed A. Refaei","doi":"10.22268/ajpp-041.3.266271","DOIUrl":"https://doi.org/10.22268/ajpp-041.3.266271","url":null,"abstract":"Farag, A.A., A.H. El Kenawy and E.A. Refaei. 2023. Field Evaluation of a Commercial Biopesticide in Comparison with a Conventional Insecticide Against Spodoptera littoralis (Boisduval) and Scrobipalpa ocellatella (Boyd) Sugar Beet Insect Pests and their Effect on the Associated Predators. Arab Journal of Plant Protection, 41(3): 266-271. https://doi.org/10.22268/AJPP-041.3.266271 In this study, the insecticidal activities of one commercially available biopesticide, Biotect of B. thuringeinsis var. kurstaki, (9.4% WP, 32000 I.U./mg), and the conventional insecticide, Andros 5.7% WDG (Emamectin benzoate), against Spodoptera littoralis (Boisd.) and Scrobipalba ocellatella (Boyd) larvae and three natural enemies; Chrysoperla carnea (Steph.), Coccinella undecimpunctata L. and Scymnus interruptus (Goeze) were evaluated during 2020 and 2021 seasons in sugar beet fields at Kafr El-Sheikh Governorate, Egypt. Andros was the most effective against S. littoralis and S. ocellatella populations with reduction of 83.3% and 91% in 2020 and 82.60% and 88.96% in 2021, respectively. Whereas, Biotect had the least effect with 67.2% and 60% reduction in 2020, and 70.12% and 56.4% reduction in 2021 for S. littoralis and S. ocellatella, respectively. On the other hand, treatments had a mediocre effect during the two seasons on the predators. Andros showed the highest effect on S. interruptus larvae with a reduction of (91.0% and 98.5% reduction), on C. undecimpunctata (81.66% and 83.22% reduction) and on C. carnea (78.12% and 86.19% reduction) in 2020 and 2021 growing seasons, respectively. Andros induced the highest decline in insect numbers. From this study, it can be proposed that Biotect is a promising B. thuringeinsis product for the biocontrol of cotton leaf worm and beet moth under field conditions. Keywords: Sugar Beet, Spodotera littoralis, Scrobipalba ocellatella, Biopesticides, Predators, Field evaluation.","PeriodicalId":37670,"journal":{"name":"Arab Journal of Plant Protection","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135736527","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Phytochemical Analysis and Allelopathic Effects of Quinoa (Chenopodium quinoa Willd.) Grain Extract M. Kadri, M., N. Salhi and A. Chana (ALGERIA)","authors":"Mounira Kadri, Nisreen Salhi, Adala Chana","doi":"10.22268/ajpp-41.3.246257","DOIUrl":"https://doi.org/10.22268/ajpp-41.3.246257","url":null,"abstract":"Kadri, M., N. Salhi and A. Chana. 2023. Phytochemical Analysis and Allelopathic Effects of Quinoa (Chenopodium quinoa Willd.) Grain Extract. Arab Journal of Plant Protection, 41(3): 246-257. https://doi.org/10.22268/AJPP-41.3.246257 This study aimed to determine the phytochemical composition of Chenopodium quinoa extracts and to show their allelopathic effects on the seed germination of some plants such as wheat (Triticum durum L.), rapeseed (Brassica napus L.) and sugarbeet (Beta vulgaris L.). The results of the chemical screening revealed that quinoa grains contain flavonoids, alkaloids, tannins, reducing compounds, sterols and triterpenes, and they are rich in saponins. polyphenols and flavonoids were determined in both aqueous and methanolic extracts. The results of TLC chromatography showed the presence of flavonoids represented by flavonol and flavanols catechin, quercetin, flavanone or flavone and chalcone. HPLC analysis identified and determined content of catechin, acacetin, tangeretin, caffeic acid and 2,3,4,5,7 Penta hydroxy flavone in methanolic extracts. Nevertheless, aqueous extracts of Chenopodium quinoa Willd. inhibited germination of sugarbeet seeds by 72%, and stimulated root length and peduncle growth in wheat and rapeseed seeds. Keywords: Chenopodium quinoa, allelopathy, HPLC, polyphenol, flavonoid.","PeriodicalId":37670,"journal":{"name":"Arab Journal of Plant Protection","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135735066","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Preliminary Study of Insect Pests on Carthamus tinctorius L. and their Associated Natural Enemies along the Syrian Coast","authors":"atiya Arab, Ali Yassin Ali, Mehran Zeity, Manal Saleh, Ola Salman, Layla El-Dahhak, Rabih Darwich, Jaafar Ammar","doi":"10.22268/ajpp-41.3.258265","DOIUrl":"https://doi.org/10.22268/ajpp-41.3.258265","url":null,"abstract":"Arab, A., A. Y. Ali, M. Zeity, M. Saleh, O. Salman, L. El-Dahhak, R. Darwish and J. Ammar. 2023. Preliminary Study of Insect Pests on Carthamus tinctorius L. and their Associated Natural Enemies along the Syrian Coast. Arab Journal of Plant Protection, 41(3): 258-265. https://doi.org/10.22268/AJPP-41.3.258265 The study was conducted on safflower fields at both Al-Sanoubar (Latakia) and Jamasa (Tartous) Research Stations during 2018, 2019 and 2020 seasons. It aimed to identify insect pests and associated natural enemies on the safflower. Results obtained identified 28 insect pest species feeding on different parts of safflower, ten species of sucking insects (Uroleucon sp., Brachycaudus sp., Mzyus persica, Aphis fabae, Lygus sp., Oxycarenus sp., Dionconotus neglectus, Carpocoris mediterraneus, Eurydema ornata and Thrips tabaci), eight lepidopteran species, six species of beetles and four dipteran species (one species of Agromyzidae and three species of Tephritidae). The incidence of fruit flies at Al-Sanoubar station was 49% in the 2019 season. Seven species of predator insects were identified: Coccinella septempunctata, Cheilomenes sp., Hippodamia variegate, Scymnus syriacus, Orius sp., Chrysoperla carnea and Syrphus sp. Three hymenoptera species of parasitoids Bracon spp. and Apanteles sp. were also recorded. Keywords: Safflower, insect pests, natural enemies, Syria","PeriodicalId":37670,"journal":{"name":"Arab Journal of Plant Protection","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135735730","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Environmentally Friendly Strategies for Controlling the European Grapevine Moth, Lobesia botrana (Lepidoptera: Tortricidae)","authors":"Hrant Terlemezyan, Masis Sargsyan, Harutyun Harutyunyan, Sona Sargsyan, Noushig Zarikian","doi":"10.22268/ajpp-041.3.272277","DOIUrl":"https://doi.org/10.22268/ajpp-041.3.272277","url":null,"abstract":"Terlemezyan, H., M. Sargsyan, H. Harutyunyan, S. Sargsyan and N. Zarikian. 2023. Environmentally Friendly Strategies for Controlling the European Grapevine Moth, Lobesia botrana (Lepidoptera: Tortricidae). Arab Journal of Plant Protection, 41(3): 272-277. https://doi.org/10.22268/AJPP-041.3.272277 The European grapevine moth, Lobesia botrana (Denis & Schiffermüller, 1775) (Lepidoptera: Tortricidae), a palearctic pest, has been the target of an international control campaign. Agricultural production areas in Armenia were identified as lacking effective control in 2019- 2020. The results of using a mixture of bacterial and chemical insecticides (BTTER-55 + Coragen, BTTER-94 + Coragen) were effective in controlling this pest. Coragen combined with sublethal concentration of bacterial insecticides (BTTER-55 + Coragen, BTTER-94 + Coragen) showed high biological efficiency against young larvae of grapevine moth under vineyard conditions. It has been proven also that, Coragen together with the applied insecticides that fell on the soil after spraying were less dangerous ecologically since they reduced the number of soil-living ammonifiers for only a short period (1-2 months). In addition, results obtained confirmed that the bacterial insecticides BTTER-55 and BTTER-94 differed in morphological and physiological features, particularly in the size of vegetative cells and spores formed by them, as well as in the size of insecticidal crystalline bodies, colonies shape and assimilation of carbon and nitrogen sources. Keywords: Armenia, European grapevine moth, insecticide, Invasive pests, Plant protection.","PeriodicalId":37670,"journal":{"name":"Arab Journal of Plant Protection","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135736530","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Mortality Effect of Some Plant Powders on the Cowpea Beetle, Callosobruchus maculatus Fab. (Coleoptera: Chrysomelidae)","authors":"Nagat Ali Abuelnnor","doi":"10.22268/ajpp-41.3.327331","DOIUrl":"https://doi.org/10.22268/ajpp-41.3.327331","url":null,"abstract":"Abuelnour, N.A. 2023. The Mortality Effect of Some Plant Powders on the Cowpea Beetle, Callosobruchus maculatus Fab. (Coleoptera: Chrysomelidae). Arab Journal of Plant Protection, 41(3): 327-331. https://doi.org/10.22268/AJPP41.3.327331 This study aimed to test the biological effect of four plant powders: black pepper (Piper nigrum), ginger (Zingiber offiicinale), retem (Retama raetam) and rosemary (Rosmarinus officinalis) against cowpea weevil, Callosobruchus maculates Fab. in chickpeas using five concentrations, 0.0, 1.0, 2.0, 3.0 and 4.0% (w/w). Results obtained showed that all tested plant powders produced significantly higher mortality than the control and reached 80.63% in 96 h. Mortality rates increased proportionally with duration of exposure. The black pepper P. nigrum caused the highest beetles mortality at all exposure times which differed significantly from mortalities caused by the other plant powders used in this experiment. Keywords: Callosobruchus maculatus, plant powders, chickpeas, mortality","PeriodicalId":37670,"journal":{"name":"Arab Journal of Plant Protection","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135736532","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Some Biological and Ecological Factors of Olive Moth, Prays oleae (Bern.) in Al-Quneitra Governorate, Southern Syria","authors":"Ibrahim Al-Jouri, Nisreen Diab, Mohamad Dawoud","doi":"10.22268/ajpp-41.3.233245","DOIUrl":"https://doi.org/10.22268/ajpp-41.3.233245","url":null,"abstract":"Al-Jouri, E., N. Diab and M. Dawoud. 2023. Some Biological and Ecological Factors of Olive Moth, Prays oleae (Bern.) in Al-Quneitra Governorate, Southern Syria. Arab Journal of Plant Protection, 41(3): 233-245. https://doi.org/10.22268/AJPP-41.3.233245 This study was carried out during the 2017 and 2018 seasons in three locations in Al-Quneitra governorate (Saida, Khan Arnabeh, and Hadar), with different heights above sea level, in order to monitor the activity of adult males of the olive moth Prays oleae (Bern.) (Lepidoptera: Yponomeutidae). using pheromone traps. The results obtained showed that the olive moth has three generations per year, and the timing of adult males emergence and the duration of each generation differed according to the studied location and season. Adults of the first generation (Anthophagous) began to appear from the first and second week of March for the seasons 2017 and 2018, respectively, in Saida site, and were delayed until the first and second week of April in Hadar location for the two study seasons, respectively. The duration of the first-generation range was 11-12 weeks, and the butterflies of the second generation (Carpophagous) appeared in the first week of June in the Saida location and the last week of June in Hadar location, and the duration of the generation range was 12-21 weeks. Adults of the third generation (Phyllophagous) began to appear in the second and third week of November for the Saida location in the two study seasons, and the fourth week of September for the locations of Khan Arnabeh and Hadar, with generation duration of 8-11 weeks. The monthly abundance differed during the same season according to the study location, and the population peak of adult olive moths was in Saida location during the two seasons of the study in April (635.67 and 664.33 males/trap, respectively), which significantly outperformed the rest of the months. The two locations of Khan Arnabeh and Hadar had the highest number of adults during the two study seasons in May, with a significant difference compared with the rest of the months with an average of 514.33 and 316.00 males/trap for the 2017 season, respectively, and 651.67 and 411.67 males/trap, respectively, for the 2018 season. By studying the correlation between the population density of adult males and temperature and humidity, it was found that there was a positive correlation with temperatures during the first generation (+0.63), and a weak negative correlation during the second generation (-0.21), and weak positive correlation during the third generation (+ 0.165). Whereas, the correlation was weakly negative between mean relative humidity and moth adults population in all three generations (-0.359, -0.39, -0.264), respectively. Keywords: Olive moth, Prays oleae, biological factors, ecological factors, Al Quneitra governorate, southern Syria.","PeriodicalId":37670,"journal":{"name":"Arab Journal of Plant Protection","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135736525","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Some Morphological Variation of Dwarf Honeybee, Apis florea Fab. in Northern and Southern Iraq","authors":"Mosalim Ashour Abdelwahed Alebty, Ibrahim Majid Faraj, Karazan Omar Kader","doi":"10.22268/ajpp-41.3.332338","DOIUrl":"https://doi.org/10.22268/ajpp-41.3.332338","url":null,"abstract":"Alebty, M.A., I.M. Farag and K.O. Ali. 2023. Some Morphological Variation of Dwarf Honeybee, Apis florea Fab. in Northern and Southern Iraq. Arab Journal of Plant Protection, 41(3): 332-338. https://doi.org/10.22268/AJPP-41.3.332338 The dwarf honeybee, Apis florea Fab. is a successful ecologically adaptive and important factor in pollinating crops. It has recently spread widely in Iraq. To investigate the variability of this bee species, samples of worker bees from different regions of Iraq (North, Kurdistan Region and Southern, Basra province) were collected during the period from March to December 2021. Ten body morphological traits of worker bees and nine wing traits were selected for this study. The statistical analysis of the results obtained showed a clear discrepancy in the measurement of the studied characters, as sizes were less in the southern bees compared to northern bees for head length, antenna length, femur length, tibia length, 3 rd sternite length, 4 th tergite length, front wing width and length, angle A4, angle B4, angle D7, angle G18 and angle K19. This is the first record of dwarf honeybee in Kurdistan province in Iraq. Keywords: Apis florea, honeybees, morphological characters, adaptation, hot areas, cold areas, Iraq","PeriodicalId":37670,"journal":{"name":"Arab Journal of Plant Protection","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135736533","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Role of Chrysoperla carnea (Steph.) and Beauveria bassina for Controlling Cabbage Aphid, Brevicoryne brassicae L. on Cabbage Plants","authors":"Ahmad A.A. Saleh, H. El-Nagar, Amany A. Khalifa, Mohamed F.M. Zawrah","doi":"10.22268/ajpp-041.3.321326","DOIUrl":"https://doi.org/10.22268/ajpp-041.3.321326","url":null,"abstract":"Saleh, A.A.A., H. El-Nagar, A.A. Khalifa and M.F.M. Zawrah. 2023. The Role of Chrysoperla carnea (Steph.) and Beauveria bassina for Controlling Cabbage Aphid, Brevicoryne brassicae L. on Cabbage Plants. Arab Journal of Plant Protection, 41(3): 321-326. https://doi.org/10.22268/AJPP-041.3.321326 Field experiments were carried out at Kafr Saqr district, Sharkia governorate during 2019/2020 and 2020/2021 growing seasons to evaluate the predator:prey ratios for the release of C. carnea and evaluation of using Beauveria bassiana suspension against the cabbage aphid, Brevicoryne brassicae. The results obtained showed that the effective control of B. brassicae was achieved ten days after releasing the larvae of the predator C. carnea when the predator:prey ratios were 1:5 and 1:10. Meanwhile, at higher ratios (1:20, 1:25 and 1:50), the cabbage aphid B. brassicae numbers decreased 25 days after predator release. The numbers of B. brassicae decreased by 84.69 and 81.61% at 1:5 and 1:10 predator:prey ratio during the first season, respectively. On the other hand, the aphid numbers were reduced by 81.50 and 70.95% at 5 days after the predator’s release during the second season, for the two predator:prey ratios, respectively. Complete reduction of B. brassicae populations was achieved at 15 days after yhe release of C. carnea larvae with predator ratios of 1:5, 1:10 and 1:15, and numbers of B. brassicae at these ratios depressed completely 20 days after release. The results revealed that the best control of B. brassicae populations under greenhouses conditions was achieved by using the lower predator:prey ratio of 1:5 and 1:10 ten days after releasing larvae of C. carnea. The highest mortality rate in B. brassicae population caused by the fungus B. bassiana was 88.33%, recorded at 7 days after the application of spore concentration 1×107 spores/ml and the LC50 obtained in the field was 1.10×106 spores/ml. It can be concluded from this study that C. Carnea and B. bassiana are effective biocontrol agents in controlling the cabbage aphid B. brassicae in the field. Keywords: B. brassicae, Chrysoperla carnea, Beauveria bassiana, Predator release.","PeriodicalId":37670,"journal":{"name":"Arab Journal of Plant Protection","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135735067","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}