scholarly journals Factors affecting field performance of pheromone traps for tobacco beetle, Lasioderma serricorne, and tobacco moth, Ephestia elutella

2018 ◽  
Vol 91 (4) ◽  
pp. 1381-1391 ◽  
Author(s):  
Christos Athanassiou ◽  
Daniel P. Bray ◽  
David R. Hall ◽  
Charles Phillips ◽  
Thomas N. Vassilakos
Keyword(s):  
Field Performance ◽  
Pheromone Traps ◽  
Lasioderma Serricorne ◽  
Factors Affecting ◽  
Ephestia Elutella

Evaluation of Carifend®, an alpha-cypermethrin-coated polyester net, for the control of Lasioderma serricorne and Ephestia elutella in stored tobacco

2018 ◽  
Vol 91 (2) ◽  
pp. 751-759 ◽  
Author(s):  
C. I. Rumbos ◽  
M. Sakka ◽  
S. Schaffert ◽  
T. Sterz ◽  
J. W. Austin ◽  
...  
Keyword(s):  
Lasioderma Serricorne ◽  
Ephestia Elutella

scholarly journals Factors Affecting Disruption of Navel Orangeworm (Lepidoptera: Pyralidae) Using Aerosol Dispensers

2020 ◽  
Vol 113 (3) ◽  
pp. 1290-1298 ◽  
Author(s):  
Charles S Burks ◽  
Donald R Thomson
Keyword(s):  
Sexual Activity ◽  
Mating Disruption ◽  
Sexual Communication ◽  
Profile Analysis ◽  
Crop Protection ◽  
Spatial Density ◽  
Pheromone Traps ◽  
Sharp Drop ◽  
Navel Orangeworm ◽  
Factors Affecting

Abstract Mating disruption is used to help manage the navel orangeworm on approximately 200,000 ha of tree nut crops. Aerosol dispensers are the most common formulation, and all formulations use an incomplete pheromone blend consisting solely of (Z11,Z13)-hexadecadienal. Profile analysis (examination of capture and males in pheromone traps as a function of spatial density of dispensers) demonstrated a sharp drop of males captured with a very low density of dispensers, and then an approximately linear relationship between 90 and approaching 100% suppression. This near-linear portion of the profile includes both dispenser densities in which crop protection has been demonstrated, and densities in which it is unlikely. Suppression of males in pheromone traps was lost the next night after dispensers were removed, suggesting that the active ingredient was not persistent in the orchard environment. During most of the summer preharvest period, turning the dispensers off 1 or 2 h before the end of the predawn period of sexual activity provides the same amount of suppression of sexual communication as emission throughout the period of sexual activity. This suggests that encountering the pheromone from the mating disruption dispensers had a persistent effect on males. During the autumn postharvest period, only emission prior to midnight suppressed communication on nights on which the temperature fell below 19°C by midnight. These findings and the analysis will help manufacturers refine their offerings for mating disruption for this important California pest, and buyers of mating disruption to assess cost-effectiveness of competing offerings.

Exploring the Factors Affecting Popularity in Social Media: A Case Study of Football Bowl Subdivision Head Coaches

2014 ◽  
Vol 7 (2) ◽  
pp. 261-278 ◽  
Author(s):  
Jonathan A. Jensen ◽  
Shaina M. Ervin ◽  
Stephen W. Dittmore
Keyword(s):  
Social Media ◽  
Intercollegiate Athletics ◽  
Field Performance ◽  
Influential Factor ◽  
Football Bowl Subdivision ◽  
Factors Affecting ◽  
Football Coaches ◽  
Social Media Platforms ◽  
Media Platform

Social media have become an increasingly important tool for college coaches and administrators to connect with fans, alumni, and recruits. However, despite their increasing prevalence, it is not well understood which factors may contribute to the reach and popularity in social media of high-profile figures such as coaches and athletic directors. Using Football Bowl Subdivision head football coaches and the popular social-media platform Twitter, this case study sought to explore the potential influence of on-field performance on coaches’ popularity in social media. Among the results is the finding that the most influential factor is the football program’s prestige (long-term success), while the coach’s on-field success and the size of the school’s fan base are of lesser importance. Given the increasing influence of social media in intercollegiate athletics, the case study’s results feature several important considerations for administrators seeking to use social-media platforms to increase the reach of their athletic programs.

FACTORS AFFECTING CAPTURE OF MALE RED PINE CONE BEETLES, CONOPHTHORUS RESINOSAE HOPKINS (COLEOPTERA: SCOLYTIDAE), IN PHEROMONE TRAPS

1995 ◽  
Vol 127 (6) ◽  
pp. 851-858 ◽  
Author(s):  
Peter de Groot ◽  
Bert F. Zylstra
Keyword(s):  
Sex Pheromone ◽  
Red Pine ◽  
Pheromone Traps ◽  
Female Sex Pheromone ◽  
Japanese Beetle ◽  
Factors Affecting ◽  
Female Sex ◽  
Pine Cone ◽  
Trap Catches

AbstractThe monoterpenes (±)-α-pinene, (1S)-(−)-β-pinene, (R)-(+)-limonene, and myrcene did not enhance the catch of red pine cone beetle, Conophthorus resinosae, in traps baited with the female sex pheromone, (±)-trans-pityol. Traps placed in the upper half of the tree’s crown caught significantly more beetles than those hung from the tree’s trunk 2 m above ground. No significant differences in trap catches were found among standard yellow Japanese beetle trap tops and those painted red, green, blue, white, black, or yellow.

scholarly journals Survival of SSG, an Endophytic Burkholderia Biocontrol Agent, on the Boxwood Leaf Surface

2021 ◽  
Vol 39 (4) ◽  
pp. 138-142
Author(s):  
Ping Kong
Keyword(s):  
Burkholderia Cepacia ◽  
Biocontrol Agent ◽  
Field Performance ◽  
Time Factors ◽  
Burkholderia Cepacia Complex ◽  
Factors Affecting ◽  
Buxus Sempervirens ◽  
Plant Foliage ◽  
Wet Condition ◽  
C 50

Abstract Survival of Burkholderia cepacia complex (Bcc)-based biocontrol agents (BCA) has been associated with their field performance for foliage disease control. SSG, a strain of boxwood endophytic Bcc, suppresses a broad spectrum of plant foliage diseases, including boxwood blight, but the control efficacy declines over time. Factors affecting SSG survival on leaf surfaces were investigated to promote the application of the BCA for boxwood blight management. ‘Justin Brouwers' boxwood plants were treated with SSG cells at 107 to 108 colony-forming unit (CFU)·ml−1, maintained in a moist chamber at 10, 20, or 30 C (50, 68, 86 F), and sampled after the inoculum was blow-dried at 0, 3, 6, 12, and 24 h after treatment. The retained cells per leaf at 0 hours was 105 to 106 CFU, but only less than 10% of the cells survived 24 h after application, irrespective of the wet period and temperature. A wet condition of 12 and 24 h at 20 and 30 C facilitated SSG survival on the second day. Further survival of SSG was affected by temperature but not wetness. Damp conditions and pleasant temperatures can improve bacteria survival and stability and are keys to promoting BCA field applications. Index words: Biocontrol agent, endophyte, survival on plant surfaces, temperature, wetness. Species used in this study: Bacterium strain, SSG (Burkholderia sp);Plant species: Buxus sempervirens L. ‘Justin Brouwers'.

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