Spatial pattern of infestation risk and management of the invasive brown marmorated stink bug in soybeans

Project Overview

GNE12-047
Project Type: Graduate Student
Funds awarded in 2012: $14,956.00
Projected End Date: 12/31/2014
Grant Recipient: University of Maryland
Region: Northeast
State: Maryland
Graduate Student:
Faculty Advisor:
Galen Dively
University of Maryland College Park
Faculty Advisor:
William Lamp
University of Maryland, College Park

Annual Reports

Commodities

  • Agronomic: soybeans

Practices

  • Education and Training: decision support system, extension, focus group
  • Pest Management: chemical control, cultural control, eradication, field monitoring/scouting, integrated pest management, physical control, prevention

    Proposal abstract:

    Recent increases in populations of the invasive brown marmorated stink bug (BMSB) Halyomorpha halys (Stål 1855) on farms of Mid-Atlantic United States has resulted in widespread economic losses. The ability of farmers to efficiently control BMSB by adjusting local farm practices requires knowledge of its spatial distribution within fields and across large landscapes. Also, prevailing environmental factors and regional land use may inhibit or support outbreaks by impeding or facilitating connectivity of BMSB among fields. However, studies investigating the spatial distribution of BMSB in grain crops, throughout the season and at multiple spatial scales, are not available. Also, the influence of land uses, crop characteristics and environmental conditions on BMSB distribution patterns is not well understood. Employing a combination of field sampling, Geographic Information Systems (GIS) and spatial analysis techniques, the proposed project will – a) suggest spatially targeted timing and intensity of pest treatment solutions by documenting BMSB densities in soybean fields at different spatial scales for the entire season; b) inform manipulation of the phenology, placement, and suitability of types of vegetation and/or crops to counteract BMSB invasion by investigating influence of habitat, crop and environmental characteristics on BMSB densities in soybean fields; and c) provide a table of BMSB infestation risk factors and in-field distribution associated with specific farmscapes, and identify areas vulnerable to higher infestation of BMSB. Thereby this research aims to inform field and landscape level pest management strategies and threat potentials of BMSB in soybean crops of Mid-Atlantic region in the United States.

    Project objectives from proposal:

    The specific objectives of this research project are:
    1. To assess the influence of adjacent habitats on spatio-temporal differences in densities of BMSB in soybean field edges.

    The specific question addressed is:
    How do adjacent habitat types (woodlots, habitations, corn, and non-crop open areas) influence BMSB densities at different distances into soybean field from the edge (movement into field) throughout the crop season?

    2. To assess the influence of field level environmental and crop characteristics on the spatio-temporal differences in densities of BMSB within adjacent corn-soybean fields;

    The specific questions addressed are:
    a. How do the spatial distributional densities of BMSB vary within adjacent corn and soybean fields over the season?
    b. How do the field level environmental and crop characteristics influence the spatio-temporal variation in BMSB densities?

    3. To assess the influence of land use at multiple scales and environmental factors, on the landscape scale differences in relative abundances of BMSB in soybean fields.

    The specific questions addressed are:
    a. How does the spatial distributional relative abundance of BMSB in soybean vary over the entire study area?
    b. How do different landscape, environmental, and topographic variables influence observed stink bug abundances at different spatial scales?

    4. To provide a table of infestation risk factors and in-field distribution patterns associated with specific farmscapes surrounding soybean fields and identify soybean production areas with higher vulnerability to outbreak of BMSB.

    Any opinions, findings, conclusions, or recommendations expressed in this publication are those of the author(s) and do not necessarily reflect the view of the U.S. Department of Agriculture or SARE.