Effectiveness of the entomopathogenic fungus Alternaria murispora and the predatory ladybird Harmonia convergens in controlling Phenacoccus solenopsis (Tinsley)
IntroductionPhenacoccus solenopsis Tinsley (Hemiptera: Pseudococcidae) is a major pest that causes significant damage to many crops worldwide, necessitating effective control methods.MethodsThis study evaluated five treatments under screenhouse conditions: untreated control, Harmonia convergens (HC)...
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Frontiers Media S.A.
2025-01-01
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| Series: | Frontiers in Sustainable Food Systems |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fsufs.2024.1469247/full |
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| author | Mohamed El Aalaoui Said Rammali Said Rammali Fatima Zahra Kamal Fatima Zahra Kamal Gabriela Calin Viorica Rarinca Viorica Rarinca Viorica Rarinca Luminita Diana Hritcu Alin Ciobică Alin Ciobică Alin Ciobică Alin Ciobică Mohamed Sbaghi |
| author_facet | Mohamed El Aalaoui Said Rammali Said Rammali Fatima Zahra Kamal Fatima Zahra Kamal Gabriela Calin Viorica Rarinca Viorica Rarinca Viorica Rarinca Luminita Diana Hritcu Alin Ciobică Alin Ciobică Alin Ciobică Alin Ciobică Mohamed Sbaghi |
| author_sort | Mohamed El Aalaoui |
| collection | DOAJ |
| description | IntroductionPhenacoccus solenopsis Tinsley (Hemiptera: Pseudococcidae) is a major pest that causes significant damage to many crops worldwide, necessitating effective control methods.MethodsThis study evaluated five treatments under screenhouse conditions: untreated control, Harmonia convergens (HC) alone, Alternaria murispora (AM) alone, AM+HC, and imidacloprid (positive control). Conducted over two experiments, the study involved weekly monitoring for 5 weeks to assess P. solenopsis and HC densities and treated plants’ visual quality.Results and discussionIn Experiment 1, AM+HC reduced mealybug densities to 2.0 by week 5, compared to 184.2 in the untreated control. Similarly, in Experiment 2, AM+HC decreased densities to 0.8, while the control had 189.6 mealybugs. Egg counts reflected these trends, with AM+HC showing the lowest counts (1.8 in Experiment 1 and 0.8 in Experiment 2) versus the control’s high counts (282.0 in Experiment 1 and 287.3 in Experiment 2). AM+HC had the highest plant visual quality scores (9.8 in Experiment 1 and 9.9 in Experiment 2), while the control scores were much lower (1.2 and 0.3, respectively). Predator densities peaked at 28.1 for HC alone in Experiment 1 and 32.1 in Experiment 2, with AM+HC reaching 14.7 and 18.2, respectively. Mummy counts were initially higher in AM alone but increased significantly in AM+HC by weeks 3 and 4. Experiment 2 had a higher mean temperature (22.17°C) compared to Experiment 1 (20.78°C), though this did not affect treatment efficacy. In conclusion, AM+HC proved most effective in reducing P. solenopsis densities and maintaining plant health, demonstrating its potential as a sustainable alternative to chemical pesticides. |
| format | Article |
| id | doaj-art-119d8b9239304bc9b1dd01a157d8150a |
| institution | Kabale University |
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| language | English |
| publishDate | 2025-01-01 |
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| series | Frontiers in Sustainable Food Systems |
| spelling | doaj-art-119d8b9239304bc9b1dd01a157d8150a2025-01-23T06:56:13ZengFrontiers Media S.A.Frontiers in Sustainable Food Systems2571-581X2025-01-01810.3389/fsufs.2024.14692471469247Effectiveness of the entomopathogenic fungus Alternaria murispora and the predatory ladybird Harmonia convergens in controlling Phenacoccus solenopsis (Tinsley)Mohamed El Aalaoui0Said Rammali1Said Rammali2Fatima Zahra Kamal3Fatima Zahra Kamal4Gabriela Calin5Viorica Rarinca6Viorica Rarinca7Viorica Rarinca8Luminita Diana Hritcu9Alin Ciobică10Alin Ciobică11Alin Ciobică12Alin Ciobică13Mohamed Sbaghi14National Institute of Agricultural Research, Rabat, MoroccoLaboratory of Agro-Alimentary and Health, Faculty of Sciences and Techniques, Hassan First University of Settat, Settat, MoroccoHuman Nutrition, Bioacives and Oncogenetics Team, Faculty of Sciences, Moulay Ismail University, Meknes, MoroccoHigher Institute of Nursing Professions and Health Technical (ISPITS), Marrakech, MoroccoLaboratory of Physical Chemistry of Processes and Materials, Faculty of Sciences and Techniques, Hassan First University, Settat, MoroccoDoctoral School of Geosciences, Faculty of Geography and Geology, Alexandru Ioan Cuza University of Iasi, Iasi, RomaniaDoctoral School of Geosciences, Faculty of Geography and Geology, Alexandru Ioan Cuza University of Iasi, Iasi, RomaniaPreclinical Department, Apollonia University, Iasi, RomaniaDoctoral School of Biology, Faculty of Biology, “Alexandru Ioan Cuza” University of Iași, Iasi, RomaniaDepartment of Public Health, Faculty of Veterinary Medicine, Iasi University of Life Sciences, Iasi, Romania0Department of Biology, Faculty of Biology, Alexandru Ioan Cuza University of Iasi, Iasi, Romania1Ioan Haulica Institute, Apollonia University, Iasi, Romania2Academy of Romanian Scientists, Bucharest, Romania3CENEMED Platform for Interdisciplinary Research, “Grigore T. Popa” University of Medicine and Pharmacy of Iasi, Iasi, RomaniaNational Institute of Agricultural Research, Rabat, MoroccoIntroductionPhenacoccus solenopsis Tinsley (Hemiptera: Pseudococcidae) is a major pest that causes significant damage to many crops worldwide, necessitating effective control methods.MethodsThis study evaluated five treatments under screenhouse conditions: untreated control, Harmonia convergens (HC) alone, Alternaria murispora (AM) alone, AM+HC, and imidacloprid (positive control). Conducted over two experiments, the study involved weekly monitoring for 5 weeks to assess P. solenopsis and HC densities and treated plants’ visual quality.Results and discussionIn Experiment 1, AM+HC reduced mealybug densities to 2.0 by week 5, compared to 184.2 in the untreated control. Similarly, in Experiment 2, AM+HC decreased densities to 0.8, while the control had 189.6 mealybugs. Egg counts reflected these trends, with AM+HC showing the lowest counts (1.8 in Experiment 1 and 0.8 in Experiment 2) versus the control’s high counts (282.0 in Experiment 1 and 287.3 in Experiment 2). AM+HC had the highest plant visual quality scores (9.8 in Experiment 1 and 9.9 in Experiment 2), while the control scores were much lower (1.2 and 0.3, respectively). Predator densities peaked at 28.1 for HC alone in Experiment 1 and 32.1 in Experiment 2, with AM+HC reaching 14.7 and 18.2, respectively. Mummy counts were initially higher in AM alone but increased significantly in AM+HC by weeks 3 and 4. Experiment 2 had a higher mean temperature (22.17°C) compared to Experiment 1 (20.78°C), though this did not affect treatment efficacy. In conclusion, AM+HC proved most effective in reducing P. solenopsis densities and maintaining plant health, demonstrating its potential as a sustainable alternative to chemical pesticides.https://www.frontiersin.org/articles/10.3389/fsufs.2024.1469247/fullbiological controlintegrated pest managementmealybug infestationplant healthpest density |
| spellingShingle | Mohamed El Aalaoui Said Rammali Said Rammali Fatima Zahra Kamal Fatima Zahra Kamal Gabriela Calin Viorica Rarinca Viorica Rarinca Viorica Rarinca Luminita Diana Hritcu Alin Ciobică Alin Ciobică Alin Ciobică Alin Ciobică Mohamed Sbaghi Effectiveness of the entomopathogenic fungus Alternaria murispora and the predatory ladybird Harmonia convergens in controlling Phenacoccus solenopsis (Tinsley) Frontiers in Sustainable Food Systems biological control integrated pest management mealybug infestation plant health pest density |
| title | Effectiveness of the entomopathogenic fungus Alternaria murispora and the predatory ladybird Harmonia convergens in controlling Phenacoccus solenopsis (Tinsley) |
| title_full | Effectiveness of the entomopathogenic fungus Alternaria murispora and the predatory ladybird Harmonia convergens in controlling Phenacoccus solenopsis (Tinsley) |
| title_fullStr | Effectiveness of the entomopathogenic fungus Alternaria murispora and the predatory ladybird Harmonia convergens in controlling Phenacoccus solenopsis (Tinsley) |
| title_full_unstemmed | Effectiveness of the entomopathogenic fungus Alternaria murispora and the predatory ladybird Harmonia convergens in controlling Phenacoccus solenopsis (Tinsley) |
| title_short | Effectiveness of the entomopathogenic fungus Alternaria murispora and the predatory ladybird Harmonia convergens in controlling Phenacoccus solenopsis (Tinsley) |
| title_sort | effectiveness of the entomopathogenic fungus alternaria murispora and the predatory ladybird harmonia convergens in controlling phenacoccus solenopsis tinsley |
| topic | biological control integrated pest management mealybug infestation plant health pest density |
| url | https://www.frontiersin.org/articles/10.3389/fsufs.2024.1469247/full |
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