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| Trevizan,Luiz Roberto P.; Baptista,Gilberto C. de; Papa,Geraldo. |
| Increasing horticultural production under protected cultivation requires more detailed studies about the occurence of pesticide residues, due to the special and peculiar environment under controlled conditions, in which some pests, that are of little concern in the field, become important. The insecticide acephate and its methamidophos metabolite residues were evaluated in greenhouse-grown tomatoes and compared to an open-field tomato crop. The treatments: (a) check; (b) one application of 75 g a.i. acephate.100 L-1 water; (c) one application of 150 g a.i.100 L-1 water; (d) four applications of 75 g a.i.100 L-1 water were evaluated. Fruit, leaf and soil samples were taken at (-1), zero, 1, 3, 7, 14, 21 days after the last or only application. The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lycopersicon esculentum; Pesticide residues; Metabolism; Greenhouse. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362005000100008 |
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| Trevisan,Marcos José; Baptista,Gilberto Casadei de; Trevizan,Luiz Roberto Pimentel; Papa,Geraldo. |
| The objectives of this study were to evaluate the residues of the insecticide carbosulfan and its carbofuran metabolites and 3-hydroxy-carbofuran in orange compartments (whole fruit, bagasse and juice) and comparison between the residual levels found in fruits with the maximum residue level and the safety interval established by the Brazilian legislation. Two field experiments were carried out, both with the following treatments: a-check; b-one application of 10 g of carbosulfan . 100 L-1 of water; c-one application with twice the rate applied in treatment b; d-four applications with the same rate applied in treatment b. Samples were taken at (-1), zero, 1, 3, 7, 14, 21 and 28 days after the last or unique application. The quantitative determinations were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Citrus sinensis; Metabolism; Pesticide residues in citrus; Maximum residue level; Safety interval. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452004000200012 |
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| Celoto,Fernando Juari; Papa,Geraldo. |
| O objetivo deste trabalho foi avaliar a atividade do acaricida etoxazol, no controle e reprodução do ácaro B. phoenicis. Para tanto, foram demarcadas com cola adesiva arenas de cinco centímetros de diâmetro em frutos de citros com alta infestação do ácaro. O ensaio foi delineado em parcelas inteiramente casualizadas, com oito tratamentos e quatro repetições. Em cada arena foram contados o número de ácaros adultos, jovens e ovos. Os tratamentos constaram dos seguintes acaricidas e doses em g i.a./100 L de água: etoxazol 110 SC (1,1; 1,65; 2,75 e 5,5); hexitiazoxi 500 PM (0,75); flufenoxuron 100 CE (3); cihexatina 500 PM (25), aplicados diretamente sobre as arenas. Os frutos foram mantidos em câmara de germinação tipo BOD. com temperatura de 25 ± 2 ºC e... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Difenil oxazolina; Controle químico; MIP; Citrus sinensis. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452010000400012 |
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