scholarly journals Fall Spraying for the Pear Psylla

1913 ◽  
Vol 6 (2) ◽  
pp. 243-244
Author(s):  
H. E. Hodgkiss
Keyword(s):  
Pear Psylla

scholarly journals PRE-BLOOM CONTROL OF PEAR PSYLLA, 2001

2002 ◽  
Vol 27 (1) ◽  
Author(s):  
J. E. Dunley ◽  
B. M. Greenfield ◽  
L. H. Bennett
Keyword(s):  
Pear Psylla ◽  
Bloom Control

Selection for monocrotophos resistance in pear psylla,Cacopsylla pyri(L.) (Hom., Psyllidae)

1995 ◽  
Vol 119 (1-5) ◽  
pp. 507-510 ◽  
Author(s):  
S. Berrada ◽  
T. X. Nguyen ◽  
D. Merzoug ◽  
D. Fournier
Keyword(s):  
Cacopsylla Pyri ◽  
Pear Psylla ◽  
Selection For

scholarly journals CONTROL OF PEAR PSYLLA WITH ABAMECTIN USING A CONVENTIONAL AIRBLAST SPRAYER AND A LOW VOLUME ‘PROPTEC’ SPRAYER, 2000

2001 ◽  
Vol 26 (1) ◽  
Author(s):  
J. E. Dunley ◽  
B. M. Greenfield ◽  
G. T. Hannig ◽  
L. H. Bennett
Keyword(s):  
Pear Psylla ◽  
Low Volume

PYRETHROID RESISTANCE IN PEAR PSYLLA, PSYLLA PYRICOLA FOERSTER (HOMOPTERA: PSYLLIDAE), AND SYNERGISM OF PYRETHROIDS WITH PIPERONYL BUTOXIDE

1989 ◽  
Vol 121 (3) ◽  
pp. 219-223 ◽  
Author(s):  
Everett C. Burts ◽  
Hugo E. van de Baan ◽  
Brian A. Croft
Keyword(s):  
Oxidase Activity ◽  
Pyrethroid Resistance ◽  
Cyano Group ◽  
Piperonyl Butoxide ◽  
Mixed Function Oxidase ◽  
Pear Psylla ◽  
Mixed Function Oxidase Activity

AbstractAdult pear psylla, Psylla pyricola Foerster, from commercial pear orchards near Wenatchee, WA, were tested using a slide-dip technique for susceptibility to fenvalerate over a 5-year period from 1984 to 1988. Results were compared with those from similar tests using psyllids from an unexposed population near Corvallis, OR. During 5 years, resistance of adults to fenvalerate increased by 16- to 32-fold at Wenatchee while that of the Corvallis population did not change. In 1988, tests with five pyrethroids and pyrethroid – piperonyl butoxide combinations indicated that pear psylla adults also were resistant to permethrin and flucythrinate but not to fenpropathrin or cyfluthrin which contain a cyano group that reduces their susceptibility to oxidase metabolism. Piperonyl butoxide synergism was proportional to the level of resistance, indicating that resistance is probably due to increased mixed function oxidase activity. Implications of this study to control of post-diapause winter form adults in commercial pear orchards is discussed.

Grafting on resistant interstocks reduces scion susceptibility to pear psylla, Cacopsylla bidens

2017 ◽  
Vol 74 (3) ◽  
pp. 617-626 ◽  
Author(s):  
Liora Shaltiel‐Harpaz ◽  
Yoram Gerchman ◽  
Mwafaq Ibdah ◽  
Rike Kedoshim ◽  
Dor Rachmany ◽  
...  
Keyword(s):  
Pear Psylla

Codling Moth and Pear Psylla: Evaluation of Insecticides for Control on Pears in California12

1973 ◽  
Vol 66 (5) ◽  
pp. 1139-1142 ◽  
Author(s):  
William C. Batiste ◽  
Arthur Berlowitz
Keyword(s):  
Codling Moth ◽  
Pear Psylla

scholarly journals Susceptibility of European pear genotypes in a gene bank to pear psylla damage and possible exploitation of resistant varieties in organic farming

2010 ◽  
Vol 16 (3) ◽  
Author(s):  
P. Benedek ◽  
T. Szabó ◽  
M. Soltész ◽  
Z. Szabó ◽  
C. Konrád-Németh
Keyword(s):  
Organic Farming ◽  
Fruit Quality ◽  
Gene Bank ◽  
Point Of View ◽  
Local Varieties ◽  
European Pear ◽  
Pear Psylla ◽  
Resistant Varieties ◽  
Commercial Cultivars ◽  
Yield Capacity

We evaluated 285 pear genotypes (commercial cultivars, ancient local varieties, unnamed local strains, seedlings, wild seedlings) in the largest gene bank of pear in Hungary from the point of view of psylla resistance to explore their possible exploitation in organic farming. We have found some 10 new resistant types (Bókoló körte, Bôtermô Kálmán, Füge alakú körte, Nagyasszony körte, Nyári Kálmán, Rozs nyári körte, Viki körte, Pb-242, Pb-299, 0-632) and 7 highly tolerant ones (Cure-6, Kései Kálmán, Kieffer, Kieffer Éd, Steiner, Téli Kálmán, II. B-3- 6/4, 96-16/5) (Table 1). These made up 3.5 + 2.8 per cent of the investigated genotypes, while 93.7 per cent of them were susceptible to pear psylla damage. Taking earlier and present results into account we can list more than 30 European pear cultivars being resistant or highly tolerant to pear psylla infestation and damage. In fact, the list of resistant and highly tolerant cultivars may serve as a basis selecting pear cultivars fitting to the specific requirements of the organic farming. By the end we can conclude that there is some real hope to exploit some resistant or highly tolerant ancient or local cultivars in organic farming but further investigations are needed to estimate their yield capacity and fruit quality.

Identification of a Sex Attractant Pheromone for Male Winterform Pear Psylla, Cacopsylla pyricola

2009 ◽  
Vol 35 (12) ◽  
pp. 1437-1447 ◽  
Author(s):  
Christelle Guédot ◽  
Jocelyn G. Millar ◽  
David R. Horton ◽  
Peter J. Landolt
Keyword(s):  
Sex Attractant ◽  
Sex Attractant Pheromone ◽  
Pear Psylla ◽  
Attractant Pheromone
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