Sampling Efficiency of the UC-VAC for Larva Populations of Hypera brunneipennis (Coleoptera: Curculionidae) in Weed-free and Weedy Alfalfa Communities

1985 ◽  
Vol 78 (6) ◽  
pp. 1264-1266
Author(s):  
D. R. Smart ◽  
J. Lasiter ◽  
R. F. Norris
Keyword(s):  
Sampling Efficiency ◽  
Hypera Brunneipennis

Characteristics Sampling Efficiency and Battery Life of Smart Air Sampler System (SASS) 3000 and SASS 3100

2010 ◽  
Author(s):  
Jana Kesavan ◽  
Deborah Schepers ◽  
Tiffany Sutton ◽  
Paul Deluca ◽  
Michael Williamson ◽  
...  
Keyword(s):  
Battery Life ◽  
Sampling Efficiency ◽  
Air Sampler

Suction Lysimeter Modifications to Improve Sampling Efficiency and Prevent Wildlife Damage

2006 ◽  
Vol 5 (1) ◽  
pp. 77-79 ◽  
Author(s):  
Charles G. Crabtree ◽  
Tina M. Seaman
Keyword(s):  
Sampling Efficiency ◽  
Wildlife Damage

scholarly journals Management of the Egyptian alfalfa weevil, Hypera brunneipennis (Boheman) (Coleoptera: Curculionidae), in the alfalfa, Medicago sativa L., using the entomopathogenic fungus, Beauveria bassiana (Balsamo) Vuillemin

2019 ◽  
Vol 29 (1) ◽  
Author(s):  
Monir M. M. El Husseini
Keyword(s):  
Medicago Sativa ◽  
Beauveria Bassiana ◽  
Entomopathogenic Fungus ◽  
Larval Population ◽  
Alfalfa Weevil ◽  
Alfalfa Field ◽  
Medicago Sativa L ◽  
Hypera Brunneipennis ◽  
Fungus Beauveria Bassiana ◽  
Sweep Net

AbstractLarval and adult populations of the Egyptian alfalfa weevil (EAW) Hypera brunneipennis (Boheman) (Coleoptera: Curculionidae) was monitored after application of the entomopathogenic fungus Beauveria bassiana in the alfalfa field (Medicago sativa L.) in two successive seasons 2014/2015 and 2015/2016. The second and last generation of the weevil on April 10, 2016, was controlled by only one application with the conidiospores of the entomopathogenic fungus B. bassiana (3 × 108 spores/ml). Accordingly, the larval population decreased from 16.07 ± 1.09 in season 2015/2016 to 7.37 ± 0.05 individuals/50 sweep net double strokes in season 2016/2017. Also, the adult weevil’s population decreased from 5.66 ± 0.8 to 2.55 ± 0.6 individuals/50 sweep net double strokes in the two seasons, respectively. 39.66% mortality rate was recorded in the Hypera brunneipennis adults aestivated under loose bark of the surrounding eucalyptus trees, which received the application of B. bassiana in the field. Another application with the fungus, targeting the second generation of the pest adults in alfalfa each season, will undoubtedly lead to a further decrease in the pest population.

scholarly journals Evaluation of physical sampling efficiency for cyclone-based personal bioaerosol samplers in moving air environments

2012 ◽  
Vol 14 (9) ◽  
pp. 2430 ◽  
Author(s):  
Wei-Chung Su ◽  
Alexander D. Tolchinsky ◽  
Bean T. Chen ◽  
Vladimir I. Sigaev ◽  
Yung Sung Cheng
Keyword(s):  
Sampling Efficiency

scholarly journals Dimethylamine and ammonia measurements with ion chromatography during the CLOUD4 campaign

2012 ◽  
Vol 5 (9) ◽  
pp. 2161-2167 ◽  
Author(s):  
A. P. Praplan ◽  
F. Bianchi ◽  
J. Dommen ◽  
U. Baltensperger
Keyword(s):  
Cosmic Rays ◽  
Sulphuric Acid ◽  
Ion Chromatography ◽  
Galactic Cosmic Rays ◽  
Cloud Chamber ◽  
Sampling Efficiency ◽  
Environmental Chamber ◽  
Mixing Ratios ◽  
Sampling Line ◽  
New Particles

Abstract. The CLOUD project investigates the influence of galactic cosmic rays on the nucleation of new particles in an environmental chamber at CERN. Dimethylamine (DMA) was injected intentionally into the CLOUD chamber to reach atmospherically relevant levels away from sources (up to 100 pptv) in order to study its effect on nucleation with sulphuric acid and water at 278 K. Quantification of DMA and also background ammonia (NH3) was performed with ion chromatography (IC). The IC method used together with the sampling line developed for CLOUD in order to measure NH3 and DMA at low pptv levels is described; the overall sampling efficiency of the method is discussed; and, finally, mixing ratios of NH3 and DMA measured during CLOUD4 are reported.

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