Influence of Sweep Length on Rice Stink Bug (Hemiptera: Pentatomidae) Capture and Reliability of Population Density Estimates

Influence of Sweep Length on Rice Stink Bug (Hemiptera: Pentatomidae) Capture and Reliability of Population Density Estimates

The rice stink bug, Oebalus pugnax (F.), is a key pest of heading rice, Oryza sativa L. (Poales: Poaceae), in the southern United States. Sweep net sampling is the recommended method for sampling rice stink bug in rice, but there currently exists no specific recommendation for sweep length, and a la...

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Bibliographic Details
Published in:Journal of economic entomology Vol. 112; no. 6; pp. 2713 - 2718
Main Authors: Cato, Aaron J., Bateman, Nicholas R., Lorenz, Gus M., Hardke, Jarrod T., Black, Joseph L., Thrash, Benjamin C., Johnson, Donn L., Gore, Jeffrey, Studebaker, Glenn, Fan, Shirley X., Gaillard, Philippe R.
Format: Journal Article
Language:English
Published: US Entomological Society of America 01-12-2019
Oxford University Press
Subjects:
Animals
Consultants
Consulting services
FIELD AND FORAGE CROPS
Heteroptera
Nymph
Oryza
Pentatomidae
Population Density
Reproducibility of Results
Rice
Samplers
Sampling
Stink bugs
sweep net
Variation
Arkansas
rice
sweep net
sampling
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Summary:The rice stink bug, Oebalus pugnax (F.), is a key pest of heading rice, Oryza sativa L. (Poales: Poaceae), in the southern United States. Sweep net sampling is the recommended method for sampling rice stink bug in rice, but there currently exists no specific recommendation for sweep length, and a large amount of variation likely exists amongst samplers. The objectives of this study were to determine the role that sweep length plays in sampling accuracy and determine the feasibility of using sweep lengths smaller than 180°. When monitoring sweep lengths by consultants, producers, and researchers, a large amount of variation in sweep length and a significant linear relationship between sweep length and rice stink bug catch per 10 sweeps was observed. Sweep length was then controlled at three levels (0.8, 1.8, and 3.5 m) and a change from 0.8 to 1.8 m in sweep length led to an increase on average of 2.28 rice stink bugs per 10 sweeps. These data suggest knowledge of sweep length is vital, and paired with large amounts of observed variation in sweep length, recommending a specific sweep length is ideal. Using Taylor's values, it was determined that 1.8 m sweeps resulted in density estimates that were as reliable as 3.5 m (180°) sweeps, suggesting a longer sweep length was not necessary. A 1.8 m sweep length recommendation would create an easier sampling regimen that is still reliable, which could lead to more accurate action threshold decisions being made for rice stink bug if it increases adoption in consultants and producers.
ISSN:0022-0493
1938-291X
DOI:10.1093/jee/toz189