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Evaluation of Turfgrass Species and Cultivars for Potential Resistance to Twolined Spittlebug (Hemiptera: Cercopidae)

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Abstract:

Potential resistance to the twolined spittlebug, Prosapia bicincta (Say), was evaluated among 56 turfgrass genotypes. Greenhouse, laboratory, and field bioassays identified differences in spittlebug survival and development, host preference and damage levels, and turfgrass tolerance to and ability to recover from pest induced injury. All centipede grasses demonstrated high levels of susceptibility, followed by bermudagrasses, seashore paspalums, and zoysiagrasses. Average nymphal survival to the adult stage ranged from 1.5 to 78.1%. Development required 38.1–62.0 d under greenhouse conditions, depending on plant taxa. Among seashore paspalums, nymphal survival to the adult stage was lowest and duration of development was longest on HI-1, ‘Sea Isle 2000’, 561-79, and ‘Mauna Kea’. Reduced spittlebug survival and increased developmental times were also observed on the bermudagrasses BERPC 91–15 and ‘Tifway’. Although zoysiagrasses supported spittlebug development and survival to the adult stage, developmental times were extended on the zoysiagrass cultivars ‘Emerald’ and ‘El Toro’. Spittlebug preference varied with generation evaluated. First-generation spittlebugs inflicted the greatest damage on TC201 (centipede grass), ‘Primavera’ (bermudagrass), and ‘Emerald’ (zoysiagrass) in choice tests. In the fall, second-generation spittlebugs damaged TC201 (centipedegrass) and ‘Sea Isle 1’ (paspalum) most severely, whereas 561-79 (paspalum) and ‘Emerald’(zoysiagrass) were less severely affected. Among taxa included in field trials, HI-1, ‘Mauna Kea’, ‘Sea Isle 2000’,and AP-14 paspalums, ‘Tifway’ bermudagrass, and ‘Emerald’ zoysiagrass were most tolerant (demonstrated the best regrowth potential following twolined spittlebug feeding).

Keywords: bermudagrass; centipedegrass; host plant resistance; seashore paspalum; turfgrass; twolined spittlebug

Document Type: Research Article

DOI: http://dx.doi.org/10.1603/0022-0493-95.2.478

Publication date: April 1, 2002

More about this publication?
  • Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.
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