scholarly journals Efficacy of Foliar Applied Insecticides for Control of Blueberry Stem Gall Wasp, 2019

2020 ◽  
Vol 45 (1) ◽  
Author(s):  
Philip D Fanning ◽  
Rufus Isaacs
Keyword(s):  
Gall Wasp ◽  
Stem Gall

scholarly journals Studies on the Gall Characteristics of Dryocosmus kuriphilus in Chestnut Genotypes in Yalova and Bursa Provinces of Turkey

2018 ◽  
Vol 47 (1) ◽  
pp. 177-182 ◽  
Author(s):  
Nimet S. GENÇER ◽  
Cevriye MERT
Keyword(s):  
Castanea Sativa ◽  
Fruit Production ◽  
Gall Formation ◽  
Gall Wasp ◽  
Local Varieties ◽  
Dryocosmus Kuriphilus ◽  
Plant Organ ◽  
Stem Gall ◽  
In The Wild ◽  
The Mean

The Asian chestnut gall wasp Dryocosmus kuriphilus is a global pest of chestnut (Castanea spp.). It has been spreading in Turkey’s forests and orchards since 2014. This pest imposes a big threat to the Turkish chestnut industry, which is among the top producers in the world. Its gall morphology has been related to pest pressure and host cultivar, thus eventually modulating plant damage with heavy impact on growth and fruit production. We compared gall characters (position on plant organ, ratios, dimensions, volumes, number of larval chambers) in wild Castanea sativa, two local cultivars and a Euro Japanese hybrid. Overall, leaf galls were more common (55.36%), followed by the stem (19.6%) and leaf stipule galls (15.29%). The mean number of chamber and volume value of gall types were 1.52-5.93 and 0.43-2.15 cm3, respectively. The highest values were observed in ‘stem gall’. The more gall formation was observed in the wild chestnut trees and ‘Marigoule’ than the other local varieties.

scholarly journals Infestation of poppy cultures with the poppy stem gall wasp (Timaspis papaveris) Cynipidae: Hymenoptera

2010 ◽  
Vol 41 (No. 2) ◽  
pp. 73-79 ◽  
Author(s):  
J. Šedivý ◽  
P. Cihlař
Keyword(s):  
Gall Wasp ◽  
Gall Wasps ◽  
Stem Gall ◽  
Degree Of Damage

The mortality of pupae in stems lying on the ground during hibernation was 51.7% in 2003. The emergence of adults in 2003 and 2004 was monitored from late April to early July by photoeclectors placed on fields that grew poppy the previous year. Most adult gall wasps emerged in April to early May 2004. The occurrence of females ovipositing on poppy stems varied from April to July and the degree of damage to the plants increased. Most frequently the females oviposited in the first stem internodes. The infestation of poppy cultures with the gall wasps was almost uniform, the number of infested plants increasing still in June. In late June, only seven out of 600 plants were not infested. Green sticks covered with non-coagulating glue and placed in the poppy field, indicated the stem heights frequented by ovipositing females. The gall wasp larvae were parasitised by <i>Trichomalus bracteatus</i> Walker and <i>Pseudotorymus papaveris</i> Ruschka, with <i>T. bracteatus</i> predominating. Most frequently, gall wasp larvae inside the seventh internode were parasitised by this species.

The Effect of Pruning on Blueberry Stem Gall Wasp

2004 ◽  
Vol 3 (3-4) ◽  
pp. 331-338 ◽  
Author(s):  
Kenna Mackenzie ◽  
David Hayman ◽  
Edward Reekie
Keyword(s):  
Gall Wasp ◽  
Stem Gall

Impact of the Asian gall wasp ( Dryocosmus kuriphilus ) on the radial growth of the European chestnut ( Castanea sativa ).

2021 ◽  
Author(s):  
Enrico Marcolin ◽  
Mario Pividori ◽  
Fernanda Colombari ◽  
Maria Chiara Manetti ◽  
Francesco Pelleri ◽  
...  
Keyword(s):  
Radial Growth ◽  
Castanea Sativa ◽  
Gall Wasp ◽  
Dryocosmus Kuriphilus ◽  
European Chestnut

scholarly journals Could Gnomoniopsis castaneae Be Used as a Biological Control Agent against Insect Pests?

2021 ◽  
Vol 11 (9) ◽  
pp. 4066
Author(s):  
Spiridon Mantzoukas ◽  
Ioannis Lagogiannis ◽  
Aristeidis Ntoukas ◽  
George T. Tziros ◽  
Konstantinos Poulas ◽  
...  
Keyword(s):  
Biocontrol Agent ◽  
Insect Pests ◽  
Biological Control Agent ◽  
Brown Rot ◽  
Control Agent ◽  
Effective Control ◽  
Mortality Factor ◽  
Perennial Crop ◽  
Gall Wasp ◽  
Pathogenic Potential

Gnomoniopsis castaneae is the cause of the chestnut brown rot but has been also regarded as an important mortality factor for the chestnut gall wasp Dryocosmus kuriphilus. The question to whether G. castaneae could serve as a natural biocontrol agent against insect pests is investigated in the present study. We used three serious insect pests as experimental model insects: Plodia interpuctella and Trogoderma granarium, which are important pests of stored products, and Myzus persicae, a cosmopolitan, serious pest of annual and perennial crop plants. Although chemical pesticides represent effective control means, they are also related to several environmental and health risks. In search for alternative pest management methods, scientific interest has been focused, inter alia, on the use of entomopathogenic fungi. While Isaria fumosorosea has long been recognized as an effective control agent against several pests, G.castaneae has been very little studied. The present study examined whether and to what extent G. castaneae and I. fumosorosea exhibit insecticidal activity against fourth-instar larvae of P. interpunctella and T. granarium and adults of M. persicae. Mortality was examined in interrelation with dosage and time exposure intervals. Both fungi exhibited pesticidal action. However, G. castaneae induced noteworthy mortality only at very high doses. In general, we concluded that G. castaneae failed to cause high insect pathogenicity at normal doses and may not be an efficient biocontrol agent compared with other entomopathogens. On the other hand, our study reiterates the pathogenic potential of I. fumosorosea. More studies are needed to further our insight into the potential of EF species as a component of IPM.

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