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Funded Project |
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Funding Program:
IPM Enhancement Grants |
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Project Title:
Red maple wildtype and cultivar pest susceptibility across urban planting
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Project Director (PD):
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Lead State: NC Lead Organization: North Carolina State University |
| Undesignated Funding: $29,995 |
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Start Date: Mar-01-2018 End Date: Feb-28-2019 |
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No-Cost Extension Date: Jul-31-2019 |
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Summary:
Trees provide critical ecosystem services and social benefits in urban landscapes.
These advantages depend on selecting appropriate sites, species, and horticultural varieties that maximize desired services and minimize management costs1-3. The problem addressed in this proposal is that we do not have adequate IPM strategies for protecting the long-term health of trees planted in stressful urban habitats. Red maple (Acer rubrum) is among the most commonly planted trees in eastern and Midwestern cities, a trend that is increasing as emerald ash borer continues killing ash trees4. Red maple growth and condition is reduced by many pests including soft and armored scales, spider mites, and leafhoppers5,6. The most damaging pest in the southeast is gloomy scale, Melanaspis tenebricosa, which thrives on trees that are stressed by heat and drought caused by impervious surface cover7-9. Gloomy scale management is nearly impossible after trees are infested so developing cultural IPM practices to prevent infestations is critical to sustaining the health of this important urban tree species. Most urban red maples are clonally propagated cultivars and hybrids10. Locally adapted wildtype maples are rarely planted but our observations suggest they are more resistant to gloomy scale, other pests, and urban stressors. Our goal is to determine if resistance to pests and urban stress makes wildtype trees more sustainable than cultivars and hybrids. We will (1) determine the abundance of gloomy scale and other pests on red maple wildtype trees, cultivars, and red maple-silver maple hybrids in five cities, (2) determine how impervious surface cover and pest abundance affect the stress and condition of these tree types, and (3) develop initial planting recommendations. Objectives: 1) determine the abundance of gloomy scale and other pests on red maple wildtype trees, cultivars, and red maple-silver maple hybrids in five cities, (2) determine how impervious surface cover and pest abundance affect the stress and condition of these tree types, and (3) develop initial planting recommendations. |
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Final Report: |
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Outputs *10 extension presentations related to this project to clientele including landscape professionals, arborists, municipal personnel. Total attendees was over 2500. *1 extension publication in a professional trade magazine and 1 blog post. *10 research presentations at universities and professional meetings *2 peer reviewed publications are in review or published. *1 USDA CPPM grant. |
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Outcomes The outcomes of this grant will be increased as part of our new USDA CPPM grant. We now base baseline data to compare the number of cultivar and wildtype trees to future urban tree populations. Outcomes may include change in municipal recommendations for tree type. |
| Report Appendices |
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