2000
DOI: 10.1603/0022-0493-93.3.623
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An Economic Comparison of Biological and Conventional Control Strategies for Whiteflies (Homoptera: Aleyrodidae) in Greenhouse Poinsettias

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Cited by 16 publications
(13 citation statements)
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“…TABELA 2 -Custos fitossanitários (R$/ha) em pomares de macieiras conduzidos com controle biológico de ácaros e manejo convencional, Fraiburgo -SC, 1999-2000 Cotação média do dólar americano no período de julho/1999 a jun/2000 = 1,836 (www.bcb.gov.br)…”
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“…TABELA 2 -Custos fitossanitários (R$/ha) em pomares de macieiras conduzidos com controle biológico de ácaros e manejo convencional, Fraiburgo -SC, 1999-2000 Cotação média do dólar americano no período de julho/1999 a jun/2000 = 1,836 (www.bcb.gov.br)…”
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“…TABELA 3 -Custos totais (R$/ha) para execução do manejo convencional e implantação do controle biológico de ácaros, incluindo custos de investimento, manutenção da produção de ácaros predadores e liberação em macieira, Fraiburgo -SC, 1999-2000 parcela CB, os custos de mão-de-obra foram 75,9% menores, para a mesma variedade, que na MC, em função da tolerância de ervas invasoras e da realização de intervenções seletivas com roçada manual ou química. Em 'Gala', ocorreu o inverso, o custo de mãode-obra foi 57,7% maior na parcela CB, justificado pela manutenção de ervas invasoras hospedeiras do ácaro predador de outubro a novembro.…”
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“…Pesticide use, in general, may be less expensive and more practical than other pest management options such as biological control or using natural enemies. For example, costs associated with using the parasitoid Encarsia formosa Gahan for control of the sweet potato whitefly B‐biotype, Bemisia tabaci Gennadius (formally called the silverleaf whitefly, Bemisia argentifolii Bellows & Perring) on poinsettia ( Euphorbia pulcherrima Willd ex Klotzsch) were > 300% higher than those of applying the systemic insecticide imidacloprid 20. Furthermore, a single application of a systemic insecticide may provide control of several different phloem‐feeding insect pests such as aphids, whiteflies and mealybugs, and any residues may continue to kill insect pests for days or even weeks, depending on the physical and molecular characteristics of the pesticide applied 21…”
Section: Role Of Pesticides In Ornamental Productionmentioning
confidence: 99%
“…est management decisions in an integrated pest management strategy rely on pest thresholds; however, thresholds have been poorly defined and investigated in greenhouse ornamental production, often resulting in prophylactic use of insecticides. For example, management of whiteflies (Aleyrodidae) on poinsettia (Euphorbia pulcherrima) historically has relied on regular applications of insecticides (Palumbo et al, 2001;Sharaf, 1986;Stevens et al, 2000), with some growers applying insecticides every 3 to 5 d (Hoddle and Van Driesche, 1996). However, relying on regular insecticide applications as a pest management strategy may be shortsighted because of the risk of insecticide resistance (Palumbo et al, 2001;Schuster et al, 2010;van Lenteren, 2012), increasingly tighter federal and state pesticide regulations (U.S. Environmental Protection Agency, 2017), and increasing pressure from retailers against the use of specific insecticide classes by commercial growers (Friends of the Earth, 2017).…”
mentioning
confidence: 99%