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dc.contributor.authorMcDonald, Sharon Angellaen_US
dc.date.accessioned2014-03-14T20:52:12Z
dc.date.available2014-03-14T20:52:12Z
dc.date.issued1997-07-09en_US
dc.identifier.otheretd-71997-85230en_US
dc.identifier.urihttp://hdl.handle.net/10919/36916
dc.description.abstractCoconut mite populations and levels of damage to 2-, 4- and 10-month old Maypan and Red Malayan Dwarf nuts in Low and High Rainfall Zones of eastern Jamaica were evaluated. Damage due to the coconut mite was assessed by quantifying scarring of the nut surface, size reduction and copra yield. It was found that coconut mite populations were the same in the two rainfall zones but differed between Maypan and Red Malayan Dwarf varieties. More Maypan nuts were infested with coconut mites than Red Malayan Dwarf nuts. More 2-month old Red Malayan Dwarf nuts were attacked than 2-month old Maypan nuts while more 10-month old Maypan nuts were colonized than 10-month old Red Malayan Dwarf nuts. In both varieties, a greater percentage of 4-month old nuts had > 1,000 coconut mites than 2- and 10-month old nuts.

Nuts in the Low Rainfall Zone had greater percentage of coconut mite damage than nuts in the High Rainfall Zone. Damage was more severe on Red Malayan Dwarf than on the Maypan nuts. The water content of Red Malayan Dwarf nuts declined with increased coconut mite damage but no relationship was found between the water content of Maypan nuts and coconut mite damage. Nut size and copra yield declined significantly with increased coconut mite damage. Total copra yield loss was only about 3% in Maypan and 6% in Red Malayan Dwarf nuts because most of the nuts had < 30% surface area damage.

en_US
dc.publisherVirginia Techen_US
dc.relation.haspartetd.pdfen_US
dc.relation.haspartch1.pdfen_US
dc.relation.haspartch2.pdfen_US
dc.relation.haspartch3.pdfen_US
dc.relation.haspartch4.pdfen_US
dc.relation.haspartch5.pdfen_US
dc.relation.haspartch6.pdfen_US
dc.relation.haspartappend.pdfen_US
dc.relation.haspartvita.pdfen_US
dc.rightsI hereby grant to Virginia Tech or its agents the right to archive and to make available my thesis or dissertation in whole or in part in the University Libraries in all forms of media, now or hereafter known. I retain all proprietary rights, such as patent rights. I also retain the right to use in future works (such as articles or books) all or part of this thesis or dissertation.en_US
dc.subjectcoconuten_US
dc.subjectEriophyes guerreronisen_US
dc.subjectEriophyidaeen_US
dc.subjectinfestationen_US
dc.subjectyield lossen_US
dc.titleInfestation Patterns of the Coconut Mite, Eriophyes guerreronis (Keifer) (Acari: Eriophyidae), on Coconuts and Resulting Yield Loss in Eastern Jamaicaen_US
dc.typeThesisen_US
dc.contributor.departmentEntomologyen_US
dc.description.degreeMaster of Scienceen_US
thesis.degree.nameMaster of Scienceen_US
thesis.degree.levelmastersen_US
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen_US
thesis.degree.disciplineEntomologyen_US
dc.contributor.committeechairRavlin, Forrest W.en_US
dc.contributor.committeememberFell, Richard D.en_US
dc.contributor.committeememberPfeiffer, Douglas G.en_US
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-71997-85230/en_US
dc.date.sdate1997-07-09en_US
dc.date.rdate1998-08-25
dc.date.adate1997-08-25en_US


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