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| Web URL(s): | https://conference.ifas.ufl.edu/iftbc2019/documents/IFTBC-2019-Online-Abstract-Book.pdf#page=51
Last checked: 04/02/2024
Requires: PDF Reader
Notes: Item is within a single large file |
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| Publication Type:
| Report |
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| Author(s): | Dale, A. G.;
Doherty, E.;
Whitman, B.;
Iannone, B.;
Kruse, J. K. |
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| Author Affiliation: | Dale and Doherty: Entomology & Nematology Department, University of Florida, Gainesville, FL; Whitman and Kruse: Environmental Horticulture Department, University of Florida, Gainesville, FL; Iannone: School of Forest Resources & Conservation, University of Florida, Gainesville, FL |
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| Title: | Mixing St. Augustinegrass (Stenotaphrum secundatum) cultivars as an integrated pest management strategy in residential lawns |
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| Meeting Info.: | Lake Buena Vista, Florida: March 24-27, 2019 |
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| Source: | International Forage & Turf Breeding Conference. 2019, p. 51. |
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| Publishing Information: | Gainesville, Florida: UF/IFAS Office of Conferences & Institutes |
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| # of Pages: | 1 |
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| Abstract/Contents: | "Urban landscapes are generally characterized by reduced arthropod diversity and increased herbivorous pest abundance, which reduces the ecosystem services provided by urban plants and wildlife. Warm season turfgrasses are ubiquitous to southern U.S. landscapes where when healthy, they provide benefits to humans and the environment. Unfortunately, insect pests frequently reduce lawn health. Due to few effective or practical integrated pest management (IPM) tactics, warm season lawn managers rely predominantly on insecticides for pest control, which has led to insecticide resistance, secondary pest outbreaks, and environmental contamination. Currently, warm season turfgrasses are produced, planted, and maintained as cultivar monocultures, which preserves the favorable traits selected for during turfgrass breeding. However, monoculture plantings may predispose them to insect pest attack. Evidence from other systems suggests that increasing plant cultivar diversity reduces pests, promotes biological control, supports more diverse communities, and improves plant quality. Therefore, we propose that planting mixtures of turfgrass cultivars may provide a tractable approach to achieving the benefits of increasing lawn diversity while conserving favorable aethetic and maintenance traits. To determine if this holds true in warm season turfgrasses, we conducted a series of laboratory, greenhouse, and common garden field experiments over two years in Florida, USA. We compared St. Augustinegrass (Stenotaphrum secundatum) monocultures, mixtures of two cultivars, and mixtures of four cultivars to determine their effects on herbivorous insects, beneficial insects, and lawn quality. We predicted that increasing cultivar diversity would increase plant quality and arthropod diversity, while reducing plant pests and their associated long term maintenance costs and risks. Thus far, our results suggest that mixing cultivars of St. Augustinegrass reduces herbivore fitness and increases lawn quality. More specifically, fall armyworm (Spodoptera frugiperda) larvae feeding on more diverse mixtures develop into smaller individuals and preferentially feed on monocultures. In addition, monthly image analysis and turfgrass industry surveys indicate that more diverse lawn plantings are greener, more dense, and preferable over monoculture plantings. Ongoing work is investigating effects of cultivar diversity on arthropod communities and the effects of geographic location and regional climate on those effects. Our ultimate goal is to develop practical, industry-accepted IPM tactics that can reduce reliance on maintenance inputs and promote urban ecosystem health." |
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| Language: | English |
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| References: | 0 |
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| Note: | This item is an abstract only! |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Dale, A. G., E. Doherty, B. Whitman, B. Iannone, and J. K. Kruse. 2019. Mixing St. Augustinegrass (Stenotaphrum secundatum) cultivars as an integrated pest management strategy in residential lawns. International Forage & Turf Breeding Conference. p. 51. |
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| Web URL(s):
https://conference.ifas.ufl.edu/iftbc2019/documents/IFTBC-2019-Online-Abstract-Book.pdf#page=51
Last checked: 04/02/2024
Requires: PDF Reader
Notes: Item is within a single large file |
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