Index Catalog // ScholarsArchive@OSU

AppleMgr, a prototype decision aid for apple pest management

Creator:: Haley, Sue
Abstract:: Computer decision aids can help integrate and apply diverse sources of information and expertise to problems of integrated pest management (IPM) in agriculture and forestry. AppleMgr combines a rule-based expert system with databases and spreadsheets in a prototype decision aid intended to be expanded and modified for use by extension...
Resource Type:: Dissertation
Full Text:: growers. GrapES is an ES for grape growers in Pennsylvania that integrates disease and insect control

Effects of near anaerobic storage conditions on physiology and flavor of various fruit types and on mortality of apple maggot (Rhagoletis pomonella)

Creator:: Kosittrakun, Manit
Resource Type:: Dissertation
Full Text:: Anaerobic Storage Conditions on Physiology and Flavor of Various Fruit Types and on Mortality of Apple

The use of flowering crab apples for the detection of latent viruses in apples

Creator:: Reynolds, James Edward
Abstract:: Recent investigations indicate that several latent viruses of apples exist in common commercial apple stocks, but these viruses and their relationships are incompletely understood. This thesis describes investigations of crab apples as indicators of latent viruses of apples. Eighty-eight varieties and species of crab apples were tested as indicators of...
Resource Type:: Dissertation
Full Text:: screening of crab apple varieties and species as indicators of a virus disease in apple. Varietv or species

Ecology of mites on pomaceous fruit trees and related wild hosts in Hood River Valley

Creator:: Jorgensen, Clive Darrel
Abstract:: The ecological interrelationships of mites occurring in and near the Hood River Valley, Oregon, pome fruit orchards were investigated to determine the possibility of an integrated control program using the species already present. Survey sampling methods were used to study mites on wild hosts (Crataegus douglasii Lindl., Crataegus columbiana Howell,...
Resource Type:: Dissertation
Full Text:: more and more on chemical pest control measures which assure higher production while producing fruit

Host selection, reproductive biology, host-specific development and mortality of the codling moth, Cydia pomonella (L.) (Lepidoptera: Torticidae), in apple and pear

Creator:: Marti, Santiago Marti
Abstract:: The biology and behavior of the codling moth, Cydia pomonella (L.), was studied to determine factors responsible for differences in susceptibility to moth damage among apple and pear cultivars. In release experiments, codling moth adults were intercepted in significantly greater numbers in host (apple, pear) than in non-host (maple) trees,...
Resource Type:: Dissertation
Full Text:: the world, codling moth is the key pest of pome fruits and its control dominates the control

Management of variegated cutworm in peppermint

Creator:: Coop, Leonard Bryan
Abstract:: A pest management program for variegated cutworm (VC), Peridroma saucia (Hubner), in Oregon peppermint was developed based on studies of pheromone trapping, sampling methods, and economic thresholds. Pheromone traps effectively trapped VC males and were used to reflect development and oviposition trends. Trap height was linearly correlated to moth catch...
Resource Type:: Dissertation
Full Text:: thresholds (number of larvae/1000 cm2 as a function of peppermint oil price, cost of control, and field class

Decomposition of Basamid in Douglas-fir heartwood

Creator:: Forsyth, Paul Griffin
Abstract:: Basamid^R (3,5-dimethy1-1,3,5,2H-tetrahydrothiadiazine- 2-thione) is a crystalline powder used as a soil sterilant. This fumigant acts in soil by decomposing to methylisothiocyanate (MITC), the primary active ingredient, as well as hydrogen sulfide, methylamine, and formaldehyde. In wood, Basamid decomposes too slowly to be efficacious against decay fungi unless amended with various...
Resource Type:: Dissertation

Classical biological control of the filbert aphid, Myzocallis coryli (Goetze) (Homoptera:Aphididae) in western Oregon

Creator:: Messing, Russell H.
Abstract:: A classical biological control project was undertaken against the filbert aphid, Myzocallis coryli (Goetze), in western Oregon. Hazelnut orchards in Spain, France, and Italy were searched for natural enemies of the aphid, and a parasitic wasp, Trioxys pallidus Haliday, was imported, quarantined, mass-reared, and released in Oregon orchards. The wasp...
Resource Type:: Dissertation
Full Text:: guild. 2. The aphid is a serious, constant pest in hazelnut production. It is costly to control, and

The potential of endemic natural enemies to suppress pear psylla, Cacopsylla pyricola Förster, in the Hood River Valley, Oregon

Creator:: Booth, Steven R.
Abstract:: This thesis addressed the potential of endemic predaceous and parasitic arthropods of the Hood River Valley, Oregon to suppress the pear psylla, Cacopsylla pyricola F8rster. Natural enemies adequately suppressed psylla in three of seven unsprayed orchards of differing vegetational settings, orchard age, and size. Relatively few psylla natural enemies dispersed...
Resource Type:: Dissertation
Full Text:: russetted pears under standard and selective pest control programs during harvest at Quince, 1987-89. Total

Biosynthesis of blasticidin S : mechanistic and stereochemical investigations

Creator:: Prabhakaran, P. C.
Abstract:: Feeding of [3-¹³C, 2-¹⁵N]arginine, 38a, unequivocally established that the β- arginine moiety of blasticidin S, 1, was formed from α-arginine by an intramolecular migration of the α-amino group to the β- position. Further feedings using chirally deuteriated arginines 38e and 38f revealed that the aminomutase process occurred with inversion of...
Resource Type:: Dissertation
Full Text:: importance and is used as a fungicide to control the rice blast disease.3,4 Structure Elucidation The

ScholarsArchive@OSU

AppleMgr, a prototype decision aid for apple pest management

Effects of near anaerobic storage conditions on physiology and flavor of various fruit types and on mortality of apple maggot (Rhagoletis pomonella)

The use of flowering crab apples for the detection of latent viruses in apples

Ecology of mites on pomaceous fruit trees and related wild hosts in Hood River Valley

Host selection, reproductive biology, host-specific development and mortality of the codling moth, Cydia pomonella (L.) (Lepidoptera: Torticidae), in apple and pear

Management of variegated cutworm in peppermint

Decomposition of Basamid in Douglas-fir heartwood

Classical biological control of the filbert aphid, Myzocallis coryli (Goetze) (Homoptera:Aphididae) in western Oregon

The potential of endemic natural enemies to suppress pear psylla, Cacopsylla pyricola Förster, in the Hood River Valley, Oregon

Biosynthesis of blasticidin S : mechanistic and stereochemical investigations

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