Biological Control of the Shore Fly (Scatella tenuicosta) with Steinernematid Nematodes andBacillus thuringiensisvar.thuringiensisin Peat and Rockwool
| Autor: | Irene Vänninen, Heini Koskula |
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| Rok vydání: | 2003 |
| Předmět: | |
| Zdroj: | Biocontrol Science and Technology. 13:47-63 |
| ISSN: | 1360-0478 0958-3157 |
| DOI: | 10.1080/0958315021000054386 |
| Popis: | Steinernema feltiae Filipjev and S. carpocapsae Weiser (Nematoda: Steinernematidae) at rates of 1, 5 and 20 million m−2 in peat pots and at rates of 1, 2.5 and 5 million m−2 in rockwool cubes were tested against the shore fly Scatella tenuicosta Collin (Diptera: Ephydridae) by applying the nematodes either preventatively 2 days before or curatively 9 days after, or both 2 days before and 9 days after exposing the pots and cubes to flies. Based on cumulative fly numbers that emerged from peat pots sampled weekly for 3 weeks, all application strategies with 5 or 20 million nematodes net-m−2, irrespective of species, reduced fly numbers by 61-96% as compared to untreated controls. High temperatures in 1 week reduced control efficacy to 30-35% in some treatments. In rockwool, maximum control efficacies of 83-84% were achieved by both species in the second week in treatments that had received two applications at the rate of 5 million m−2, but these did not differ significantly from the 69-75% efficacies achiev... |
| Databáze: | OpenAIRE |
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