Abstract
The laboratory experiment was conducted at the laboratory of the Department of Entomology, Bangladesh Agricultural University to determine the effectiveness of polythene band, predatory ladybird beetles (available species found in Bangladesh viz. Coccinella transversalis (F.), Micraspis discolor (F.), Menochilus sexmaculatus (F.), Cyclonida sanguinea, Adalia bipunctata, Coccinella novemnotata and Illeis koebelei), four chemical insecticides and three botanical oils in controlling papaya mealybug, Paracoccus marginatus Williams and Granara de Willink. The chemical insecticides were Sevin 85 SP, Dimethoate 40 EC, Fipronil 50 EC, Deltamethrin 2.5 EC, and the botanical oils were Neem oil, Mahogany oil and Karanja oil. In the laboratory experiment, polythene banding failed to prevent the plant from the infestation of papaya mealybug. Seven commonly available species of ladybird beetles in Bangladesh did not provide any control to papaya mealybug. Among the chemical insecticides, Sevin 85 SP and Dimethoate 40 EC showed significant mortality of papaya mealybug. Deltamethrin 2.5 EC and Neem oil (2%) provided moderate control of the pest. The remaining insecticides and botanical oils were less effective to control papaya mealybug. Int J Appl Sci Biotechnol, Vol 3(4): 687-691
Highlights
The papaya mealybug, Paracoccus marginatus Williams and Granara de Willink is a small, soft bodied insect pest belongs to the Family Pseudococcidae under the Order Hemiptera
In a 15 cm petridishes, ten papaya mealybugs were kept at one side and ten cowpea aphids were kept on another side along with their host plant parts, where one ladybird beetle was released in the middle
Effectiveness of polythene band to prevent papaya mealybug Infestation of papaya mealybug was first noticed in control plants on 30 days, while mealybugs were first noticed in polythene banded plants little bit later on 36 days and subsequently attacked all of the polythene banded plants
Summary
CrossRef, Google Scholar, Global Impact Factor, Genamics, Index Copernicus, Directory of Open Access Journals, WorldCat, Electronic Journals Library (EZB), Universitätsbibliothek Leipzig, Hamburg University, UTS (University of Technology, Sydney): Library, International Society of Universal Research in Sciences (EyeSource), Journal Seeker, WZB, Socolar, BioRes, Indian Science, Jadoun Science, JourInformatics, Journal Directory, JournalTOCs, Academic Journals Database, Journal Quality Evaluation Report, PDOAJ, Science Central, Journal Impact Factor, NewJour, Open Science Directory, Directory of Research Journals Indexing, Open Access Library, International Impact Factor Services, SciSeek, Cabell’s Directories, Scientific Indexing Services, CiteFactor, UniSA Library, InfoBase Index, Infomine, Getinfo, Open Academic Journals Index, HINARI, etc. Impact factor*: 1.422 Scientific Journal Impact factor#: 3.419 Index Copernicus Value: 6.02 IBI Factor 2015**: 4.19. CONTROL STRATEGIES OF PAPAYA MEALYBUG, PARACOCCUS MARGINATUS WILLIAMS AND WILLINK IN THE LABORATORY CONDITION
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