Field Release of the Parasitoid Microplitis mediator (Hymenoptera: Braconidae) for Control of Helicoverpa armigera (Lepidoptera: Noctuidae) in Cotton Fields in Northwestern China’s Xinjiang Province

2006 ◽  
Vol 35 (3) ◽  
pp. 694-699 ◽  
Author(s):  
Jiancheng Li ◽  
Fengming Yan ◽  
Thomas A. Coudron ◽  
Wenliang Pan ◽  
Xiaofeng Zhang ◽  
...  
Keyword(s):  
Helicoverpa Armigera ◽  
Microplitis Mediator ◽  
Field Release ◽  
Helicoverpa Armígera ◽  
Cotton Fields ◽  
Lepidoptera Noctuidae

scholarly journals Factors Affecting Adult Captures of the Cotton Bollworm, Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae) in Pheromone-Baited Traps

Agronomy ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 2539
Author(s):  
Alkiviadis Karakasis ◽  
Evagelia Lampiri ◽  
Christos I. Rumbos ◽  
Christos G. Athanassiou
Keyword(s):  
Helicoverpa Armigera ◽  
Cotton Bollworm ◽  
Funnel Trap ◽  
Trap Color ◽  
Trap Height ◽  
Helicoverpa Armígera ◽  
Cotton Fields ◽  
Monitoring Protocols ◽  
Lepidoptera Noctuidae ◽  
Helicoverpa Armigera Hubner

The effects of funnel-trap color, trap height and pheromone formulation on the adult captures of the cotton bollworm, Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae) were evaluated in traps that were suspended in cotton fields in central Greece. Briefly, in a first trial, the efficacy of funnel traps of three different colors, i.e., green, striped (with black and white stripes) and white, was comparatively evaluated, whereas in a second trial green funnel traps were placed at three heights, i.e., 30, 60 and 90 cm from the ground. Finally, in a third trial we tested the efficiency of green funnel traps with three commercially available pheromone lures. Considering the overall captures, trap color and pheromone formulation affected male captures, whereas trap height had no influence. Captures notably increased in all traps from late August to mid-September. In total, the white funnel trap captured more moths than the green or striped funnel traps. Placement of the traps at different heights did not significantly affect captures, but seasonal differences were observed at individual dates during the trapping period. Barrettine’s pheromone lure provided significantly more captures than the other two (Russell, Trécé) in some of the trap-check dates. The results can be further utilized in the monitoring protocols of H. armigera in cotton fields.

Incidence of Helicoverpa armigera (Lepidoptera: Noctuidae) and its natural enemies on smallholder crops in Kenya

1993 ◽  
Vol 83 (3) ◽  
pp. 321-328 ◽  
Author(s):  
H. van den Berg ◽  
M. J. W. Cock ◽  
G. I. Oduor ◽  
E. K. Onsongo
Keyword(s):  
Helicoverpa Armigera ◽  
Heliothis Armigera ◽  
Population Densities ◽  
Parasitoid Species ◽  
Larval Parasitoid ◽  
Total Percentage ◽  
Four Seasons ◽  
Helicoverpa Armígera ◽  
Lepidoptera Noctuidae ◽  
Experimental Plots

AbstractSmallholder crops (sunflower, maize, sorghum and cotton) were grown in experimental plots at seven sites, representing different agricultural zones of Kenya, over four seasons. Helicoverpa armigera (Hübner) (formerly Heliothis armigera) only occasionally achieved population densities sufficient to cause obvious damage to the crops, and was virtually absent from the coastal sites. At the inland sites, infestation and mortality levels varied greatly. Information is presented on the incidence of H. armigera, and the identity, distribution and frequency of its common parasitoids and (potential) predators, sampled in the experimental plots. Trichogrammatoidea spp., egg parasitoids, and Linnaemya longirostris (Macquart), a tachinid late-larval parasitoid, were the most common parasitoid species, but total percentage parasitism was rather low. Of the large complex of predators, only anthocorids and ants (predominantly Pheidole spp., Myrmicaria spp. and Camponotus spp.) were sufficiently common and widespread to be of importance in suppressing H. armigera. The abundance of predators fluctuated widely between sites, but anthocorids were most abundant at the western sites.

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