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| Strausbaugh, C.A.; Wenninger, E.J.; Eujayl, Imad A.. |
| Curly top in sugar beet caused by Beet curly top virus (BCTV) is an important yield limiting disease that can be reduced via neonicotinoid and pyrethroid insecticides. However the length of efficacy of these insecticides is poorly understood, so a series of field experiments was conducted with the seed treatment Poncho Beta (60 g a.i. clothianidin + 8 g a.i. beta-cyfluthrin/100,000 seed) and foliar treatment Asana (55.48 g a.i. esfenvalerate/ha). A series of four experiments were conducted in 2014 and repeated in 2015 with four treatments (untreated check, Poncho Beta, Asana, and Poncho Beta + Asana) which were arranged in a randomized complete block design with 8 replications. To evaluate efficacy, viruliferous (contain BCTV strains) beet leafhoppers... |
| Tipo: Article |
Palavras-chave: Curly top; Seed treatment; Sugarbeet; Insecticide. |
| Ano: 2016 |
URL: http://eprints.nwisrl.ars.usda.gov/1622/1/1579.pdf |
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| Strausbaugh, C.A.; Wenninger, E.J.; Eujayl, Imad A.. |
| Curly top in sugar beet is a serious problem that is caused by Beet curly top virus and other closely related species and transmitted by the beet leafhopper. In order to find a means of reducing curly top in sugar beet, 15 combinations of insecticide seed (Poncho, Poncho Beta, and Poncho Votivo) and foliar (Asana, Cyazypyr, Lorsban, Mustang, Scorpion, and Sivanto) treatments were evaluated versus an untreated check during the 2012 and 2013 growing seasons. An epiphytotic was created by releasing viruliferous beet leafhoppers 58 to 59 days after planting. The foliar sprays were applied 6 to 7 days before and again 6 to 8 days after leafhopper release. Seed treatments (active ingredient: clothianidin) were able to reduce symptoms by 26 to 42% and increase... |
| Tipo: Article |
Palavras-chave: Sugarbeet. |
| Ano: 2014 |
URL: http://eprints.nwisrl.ars.usda.gov/1541/1/1498.pdf |
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| Strausbaugh, C.A.; Wenninger, E.J.; Eujayl, Imad A.. |
| Curly top in sugarbeet can result in severe yield losses and is caused by Beet severe curly top virus (BSCTV) and other closely related Curtovirus spp. which are vectored by the beet leafhopper. Neonicotinoid seed treatments (Cruiser, NipsIt, and Poncho) have been shown to be an effective supplement to host resistance, but measures to extend control beyond the duration of seed treatment efficacy needs to be investigated. In 2012, a field study was arranged in a randomized complete block design with 8 replications and planted with the cultivar B-42. The 16 treatments included untreated and Poncho Beta treated seed with and without 6 foliar insecticides (applied 7 days before and 6 days after release of viruliferous beet leafhopper) and just Poncho and... |
| Tipo: Article |
Palavras-chave: Seed treatment; Sugarbeet; Insecticide. |
| Ano: 2013 |
URL: http://eprints.nwisrl.ars.usda.gov/1524/1/1451.pdf |
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| Strausbaugh, C.A.; Wenninger, E.J.; Eujayl, Imad A.. |
| Curly top caused by Curtovirus species is a widespread disease problem vectored by the beet leafhopper in semiarid sugar beet production areas. The insecticide seed treatment Poncho Beta has proven to be effective in controlling curly top in sugar beet, but was only evaluated under light to moderate disease pressure. Thus, the insecticide seed treatments Poncho Beta, NipsIt INSIDE, and Cruiser Force were evaluated under severe curly top pressure (6 viruliferous beet leafhoppers per plant) in field studies during the 2010 and 2011 growing seasons on two commercial sugar beet cultivars. In addition, the foliar insecticides Movento, Provado, and Scorpion were also evaluated. The seed treatments and Scorpion reduced curly top symptoms by 33 to 41% (P... |
| Tipo: Article |
Palavras-chave: Curly top; Seed treatment; Sugarbeet; Insecticide. |
| Ano: 2012 |
URL: http://eprints.nwisrl.ars.usda.gov/1461/1/1426.pdf |
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