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Previous issue date: 2007-10-30 / The objective of this work was the evaluation of soil translocation of two herbicides used in sugarcane (Saccharum spp.) under a infiltration flux of 10, 20, 40, 80 and 160 mm of water. The experiment was done in a greenhouse in columns with medium texture soil and ametryn application, at 3 kg.ha-1, before emergence or a mixture of clomazone, at 1 kg.ha-1, and hexazinone, at 0,25 kg.ha-1. The herbicides translocation, in the soil profile was evaluated by Sorghum bicolor as an indicative plant. Ametryn lixiviated limitedly; on the other hand, the clomazone + hexazinone mixture was highly transposable to layers deeper than 20cm in the soil profile. The effects of clomazone + hexazinone mixture and ametryn herbicides were reduced in the first 5 cm in soil (dilution effect) when submitted to 160 mm of water. The mixture clomazone + hexazinone was more effective than ametryn in the suppression of sorghum even when submitted the excessive infiltration flux of water. / Objetivou-se com este trabalho avaliar a lixiviação de ametryn (3 kg ha-1) e da mistura clomazone+hexazinone (1,0 + 0,25 kg ha-1) em colunas de solo, textura média, por meio da percolação de 10, 20, 40, 80 e 160 mm de água. O experimento foi realizado em casa de vegetação, e a translocação dos herbicidas no perfil do solo foi avaliada por meio de planta indicadora, utilizando-se Sorghum bicolor. O ametriyn apresentou baixa lixiviação, por outro lado, a mistura clomazone+hexazinone foi lixiviada para camadas abaixo de 20 cm de profundidade. Os efeitos dos herbicidas foram reduzidos nos primeiros 5 cm do perfil do solo quando submetidos a 160 mm de água.
| Identifer | oai:union.ndltd.org:IBICT/oai:bdtd.unoeste.br:tede/505 |
| Date | 30 October 2007 |
| Creators | Passos, Adriana Tierno Magalhães |
| Contributors | Tiritan, Carlos Sérgio, Foloni, José Salvador Simoneti, Silva, Andréia Cristina da |
| Publisher | Universidade do Oeste Paulista, Mestrado em Agronomia, UNOESTE, BR, Ciências Agrárias |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/masterThesis |
| Format | application/pdf |
| Source | reponame:Biblioteca Digital de Teses e Dissertações da UNOESTE, instname:Universidade do Oeste Paulista, instacron:UNOESTE |
| Rights | info:eu-repo/semantics/openAccess |
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