Status, distribution and seasonal variation of filbert aphid resistance to selected insecticides in the willamette valley, oregonGraduation date: 1986Levels of resistance to six selected insecticides ofdeleven field populations of the filbert aphid Mvzocallisdcoryli (Goetze) were determined by using the leaf-dipdresidue technique....
Measurements of chlorophyll fluorescence as an auxiliary method in estimating susceptibility of cultivated hazel (corylus l.) for filbert aphid (myzocallis coryli goetze)The influence of aphid feeding on chlorophyll a fluorescence in the leaves of four cultivated hazel cultivars, with different levels of resistance to filbert aphid (Myzocallis coryli Goetze), was studied....
The comparative analysis of anatomical traits of four largefruited hazelnut cultivars showing different susceptibility to filbert aphid (myzocallis coryli goetze) feeding...L.) cultivars characterised by different susceptibility to filbert aphid (Myzocallis coryli Goetze) feeding....
Classical biological control of the filbert aphid, myzocallis coryli (goetze) (homoptera:aphididae) in western oregonGraduation date: 1987A classical biological control project was undertakendagainst the filbert aphid, Myzocallis coryli (Goetze), indwestern Oregon....
