dc.contributor.advisor |
Morgan, H.G. |
|
dc.contributor.author |
Abu, J.F. |
|
dc.contributor.other |
University of Ghana, College of Basic and Applied Sciences, School of Agriculture, Department of Crop Science |
|
dc.date.accessioned |
2016-03-15T09:22:37Z |
|
dc.date.accessioned |
2017-10-13T16:24:49Z |
|
dc.date.available |
2016-03-15T09:22:37Z |
|
dc.date.available |
2017-10-13T16:24:49Z |
|
dc.date.issued |
1972-06 |
|
dc.identifier.uri |
http://197.255.68.203/handle/123456789/7850 |
|
dc.description |
Thesis (MSc) - University of Ghana, 1972 |
|
dc.description.abstract |
The biology of Siopsis species (Diptera; Diopsidae) and Epilachna
s im i l is (Coleoptera; Coccinellidae) was studied on the Acora P lain s .
of the three species of Diopais found, D. thoracica caused the most
severe damage to r i c e . AH the developmental stages of these insects
are described and keys are provided for identify in g a ll the various
stages of the Diopsis species. D. thoracica exhibits sexual dimorphism
with regard to the interorbita l distance. A high stalk infestation o f
forty -eight per cent was recorded in the major rainy season. The parasite and alternate host of these insects species are discussed. Artificial infestation of rice stalks with the larvae o f D. thoracica demonstrated
that a single larva, could destroy 3 - 6 stalks during its life
time leading to a loss of about nine percent in yield .
All the developmental stages o f B. similis are described and a
key provided for identify in g the four larval in s tars . Possible control
measures against the Diopsis species and Epilachna similis are discussed. |
en_US |
dc.format.extent |
xi, 105p. :ill. |
|
dc.language.iso |
en |
en_US |
dc.publisher |
University of Ghana |
en_US |
dc.title |
The Bionomics of Diopsis (Dipteral Digpsidae) and of Epiiachna Similis (Coleopteba, Coccinellidae) on Oryza Sativa L. in the Accra Plains |
en_US |
dc.type |
Thesis |
en_US |
dc.rights.holder |
University of Ghana |
|