Evaluation of Isolated Fungal Entomopathogens And Seed Extracts Of Piper Guineense Against Larvae Of Helicoverpa Armigera (Lepidoptera: Noctuidae) In The Laboratory

Simple item page
dc.contributor.advisorGbewonyo, S.W.K
dc.contributor.advisorEziah, Y. V.
dc.contributor.advisorDorleku, W. P
dc.contributor.authorGabuin, N.D
dc.contributor.otherUniversity Of Ghana, College of Basic and Applied Sciences ,School of Biological Sciences ,Department of Animal Biology and Conservation Science (DABCS)
dc.date.accessioned2016-09-15T11:53:40Z
dc.date.accessioned2017-10-13T17:00:29Z
dc.date.available2016-09-15T11:53:40Z
dc.date.available2017-10-13T17:00:29Z
dc.date.issued2015-07
dc.descriptionThesis(MPHIL)-University of Ghana, 2015
dc.description.abstractA major constraint to increased and sustainable production of tomatoes is its infestation by insect pests particularly the tomato fruit worm Helicoverpa armigera (Hubner) (Lepidoptera: Noctuidae). The control of this insect relies heavily on the use of synthetic insecticides which have negative environmental effects. Some insects have developed resistance to certain insecticides. Efforts are therefore being made to look for alternative control strategies that are environmentally-safe and sustainable. This study determined the insecticidal effects of West African black pepper, Piper guineense (Schum and Thonn) seed extracts in combination with some indigenously isolated fungal entomopathogens on the larvae of tomato fruit worm, H. armigera and monitored the population trend of the pest on tomato fields during the major and minor tomato growing seasons. The entomopathogenic fungi were isolated from soil samples collected from around the University of Ghana, Legon, Accra and its neighbouring areas, using larvae of Tribolium spp. as baits. The results obtained in this study showed that there were more tomato fruit worms on tomato fields in the first cropping season than the second season. Only one of the entomopathogenic fungi was re-isolated from dead H. armigera and this was identified as Aspergillus sp. The pure isolate of fungus (Aspergillus sp.) and methanolic seed extract of P. guineense were bioassayed on H. armigera using topical application. Aspergillus sp. and the seed extract induced significant levels of mortality to the H. armigera larvae. Aspergillus sp. and seed extract induced 20% and 50% mortality, respectively. After six days of treatment but the seed extract inhibited the growth of Aspergillus sp. The study showed that fungi isolates and P. guineense seed extract could be potential control agents in the management of the tomato fruit worm.en_US
dc.format.extentxii,95p:ill
dc.identifier.urihttp://197.255.68.203/handle/123456789/8594
dc.language.isoenen_US
dc.publisherUniversity of Ghanaen_US
dc.rights.holderUniversity Of Ghana
dc.subjectFungal Entomopathogensen_US
dc.subjectGuineenseen_US
dc.subjectLarvaeen_US
dc.subjectHelicoverpa Armigeraen_US
dc.subjectThe Laboratoryen_US
dc.titleEvaluation of Isolated Fungal Entomopathogens And Seed Extracts Of Piper Guineense Against Larvae Of Helicoverpa Armigera (Lepidoptera: Noctuidae) In The Laboratoryen_US
dc.typeThesisen_US

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Evaluation of Isolated Fungal Entomopathogens and Seed Extracts of Piper Guineense against Larvae of Helicoverpa Armigera (Lepidoptera Noctuidae) in the Laboratory -2015.pdf
Size:
3.15 MB
Format:
Adobe Portable Document Format
Download
License bundle
Now showing 1 - 2 of 2
No Thumbnail Available
Name:
license.txt
Size:
1.82 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
No Thumbnail Available
Name:
license.txt
Size:
0 B
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

Department of Animal Biology and Conservation Science (DABCS)