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| Golombieski,Jaqueline Ineu; Marchesan,Enio; Baumart,Joele Schmitt; Reimche,Geovane Boschmann; Resgalla Júnior,Charrid; Storck,Lindolfo; Santos,Sandro. |
| This study determined the effects of metsulfuron-methyl, azimsulfuron and carbofuran in communities: Cladocers, Copepods and Rotifers that are present in irrigated rice farming with the rice-fish system. The field experiment was conducted in the 2004/05 growing season with eight treatments. The fish species were: Cyprinus carpio, Ctenopharyngodon idella and Aristichthys nobilis, introduced seven days after treatments were applied. Water samples were collected 17 days before and 1st, 3rd, 10th, 18th, 31th, 51th, and 75th days after the agrochemicals were applied for identification and evaluation of the zooplankton. The results indicated that the herbicides did not affect the zooplankton community studied and carbofuran insecticide application provoked... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Agrochemicals; Non-target organisms; Zooplankton communities; Rice culture. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782008000800001 |
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| Rodrigues,Everton N. L.; Mendonça Jr,Milton de S.; Fritz,Leila L.; Heinrichs,Elvis A.; Fiuza,Lídia. |
| The adverse effect that insecticides have on spider populations is of major concern since these predators are a component in the biological control of rice insect pest populations. This study was designed to determine the effect of the pyrethroid insecticide, Lambda-cyhalothrin, on spider populations in rice fields. Treatments consisted of plots treated once with the insecticide and untreated plots (control). Spiders were sampled four times per crop year over a two year period in each of three sites in the state of Rio Grande dol Sul, Brazil. Treatments were replicated four times. Sweep net sampling was conducted to sample the araneofauna. Overall 1,961 spiders were collected, with a predominance of juveniles over adults. Between treatments, there were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Rice culture; Spider abundance; Spider composition; Species richness; Lambda-cyhalothrin. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702013000600005 |
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