STUDIES ON POPULATION DYNAMICS OF Agonoscelis versicolor F. (Hemiptera: Pentatomidae) ON SUNFLOWER (Helianthus annuus L.) IN SAMARU-ZARIA, NIGERIA

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dc.contributor.authorADEKUNLE, Joyce Bunmi
dc.date.accessioned2017-08-02T15:34:14Z
dc.date.available2017-08-02T15:34:14Z
dc.date.issued2016-11
dc.descriptionA DISSERTATION SUBMITTED TO THE SCHOOL OF POSTGRADUATE STUDIES, AHMADU BELLO UNIVERSITY, ZARIA, IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE AWARD OF MASTER OF SCIENCE DEGREE IN CROP PROTECTION DEPARTMENT OF CROP PROTECTION FACULTY OF AGRICULTURE AHMADU BELLO UNIVERSITY, ZARIA, NIGERIAen_US
dc.description.abstractField experiments were conducted at the Institute for Agricultural Research (I. A. R.), Samaru, Zaria (Latitude 11˚11' N and Longitude 7˚38' E), Nigeria for two years period (2009 and 2012) to study the population dynamics of Agonoscelis versicolor F. on sunflower. The effect of planting dates of sunflower at two weeks intervals and weather parameters were used to monitor the population build-up of A. versicolor, their damage and yield of sunflower. The experiments were laid out in randomized complete block design with three replications. Four planting dates each during the rainy season (July 21, August 04, August 18 and September 01) and dry season (October 27, November 10, November 24 and December 08) were employed and Sunflower „Ex-Funtua‟ variety was sown with no insecticidal treatments. The result showed a significant difference (p <0.05) in the mean bug population on the sunflower on the four different planting dates, with higher mean number of A. versicolor recorded during the dry season than the rainy season. Planting dates also had significant effect on percentage seed damage (19-30%) and seed yield. Relative humidity, rainfall and yield were negatively correlated to population of A. versicolor while temperature and sunshine were positively correlated to the population of A. versicolor.en_US
dc.identifier.urihttp://hdl.handle.net/123456789/9161
dc.language.isoenen_US
dc.subjectPOPULATION,en_US
dc.subjectDYNAMICS,en_US
dc.subjectAgonoscelis versicolor F.en_US
dc.subjectPentatomidae,en_US
dc.subjectSUNFLOWERen_US
dc.subjectHelianthus annuus Len_US
dc.subject(Hemiptera: Pentatomidae)
dc.subjectSAMARU-ZARIA, NIGERIA
dc.titleSTUDIES ON POPULATION DYNAMICS OF Agonoscelis versicolor F. (Hemiptera: Pentatomidae) ON SUNFLOWER (Helianthus annuus L.) IN SAMARU-ZARIA, NIGERIAen_US
dc.typeThesisen_US
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