scholarly journals Greenhouse Test on Repellents of Winterform Pear Psylla

2020 ◽  
Vol 45 (1) ◽  
Author(s):  
Louis Nottingham ◽  
Robert Orpet ◽  
Elizabeth Beers
Keyword(s):  
Greenhouse Test ◽  
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.

scholarly journals Morpho-molecular identification and pathogenicity test on fungal parasites of guava root-knot nematode eggs in Lampung, Indonesia

2020 ◽  
Vol 21 (3) ◽  
Author(s):  
I Gede Swibawa I Gede ◽  
YUYUN FITRIANA ◽  
SOLIKHIN ◽  
RADIX SUHARJO ◽  
F.X. SUSILO ◽  
...  
Keyword(s):  
Molecular Identification ◽  
Morphological Characteristics ◽  
Pathogenicity Test ◽  
Root Knot Nematode ◽  
Commercial Products ◽  
Tomato Plants ◽  
Greenhouse Test ◽  
Nematode Eggs ◽  
Fungal Parasites

Abstract. Swibawa IG, Fitriana Y, Solikhin, Suharjo R, Susilo FX, Rani E, Haryani MS, Wardana RA. 2020. Morpho-molecular identification and pathogenicity test on fungal parasites of guava root-knot nematode eggs in Lampung, Indonesia. Biodiversitas 21: 1108-1115. This study aimed to obtain and discover the identity of the species of fungal egg parasites of root-knot nematodes (RKN), which have a high pathogenic ability causing major losses in vegetable crops. The exploration of the fungi was carried out in 2016 and 2018 from Crystal guava plantations in East Lampung, Central Lampung, Tanggamus, and NirAma, a commercial product that has been used for controlling Meloidogyne sp. in Indonesia. Identification was carried out based on morphological characteristics and molecular-based gene sequential analysis of Intergenic Transcribed Spacer (ITS) 1 and ITS 4. A pathogenicity test was carried out in vitro and in a greenhouse using tomato plants as indicator plants. In the in vitro test, observations were made on the percentage of infected RKN eggs. The observations in the greenhouse test were carried out on RKN populations in the soil and roots of tomato plants, root damage (root knots), and damage intensity due to RKN infection. The exploration resulted in five isolates of fungal egg parasites of RKN from the guava plantations in East Lampung (2), Central Lampung (1), Tanggamus (1), and from the isolation results of commercial products (1). The isolates were given codes as B4120X (PT GGP PG1), B3010 (PT GGP PG4), B412G (PT GGP PG 4), B01TG (Tanggamus), and BioP (Commercial products). Based on their morphological characteristics, the isolates were classified into the genus of Paecilomyces. The results of molecular identification showed that the discovered fungi were Purpureocillium lilacinum (Thom.) Luangsa Ard. (Syn. Paecilomyces lilacinus (Thom.) Samson.). Based on the in vitro tests, the five fungal isolates were able to parasitize RKN eggs at 86.4-100%. In the greenhouse test, all isolates significantly suppressed nematode populations in the soil and tomato roots, inhibited the formation of root knots, and produced lower damage intensity compared to controls. Among all the isolates tested, B01TG had the best ability to infect nematode eggs (99.5%), suppressing the formation of root knots, nematode population in the soil and the roots of tomato plants, and the damage intensity compared to other isolates.

scholarly journals Fall Spraying for the Pear Psylla

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