Impacto de agroquímicos usados na lavoura de arroz irrigado sobre a qualidade da água de irrigação e na comunidade zooplanctônica
Autor(a) principal: | |
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Data de Publicação: | 2010 |
Tipo de documento: | Dissertação |
Idioma: | por |
Título da fonte: | Biblioteca Digital de Teses e Dissertações do UFSM |
Texto Completo: | http://repositorio.ufsm.br/handle/1/5032 |
Resumo: | Agrochemicals are intensely used on rice (Orysa sativa L.) paddy culture, and depending on their environmental persistence and toxicity they may contaminate water bodies and affect non-target organisms. Both herbicides and insecticides are recommended for use in rice culture in southern Brazil. This study aimed was divided into three different experiments, with the following aims: (i) to determine the persistence of the herbicides imazethapyr + imazapic (Only®), bispyribac-sodium, penoxsulan, clomazone, and quinclorac and of the insecticides carbofuran and fipronil in irrigation water; (ii) to investigate the effect of these agrochemicals on physical, chemical and biological water quality; and, (iii) to investigate the effects of these agrochemicals on the native zooplanktonic biota of rice paddy fields cultivated under the direct seeding system. The field experiment was carried out in Santa Maria (RS), at the Federal University of Santa Maria (UFSM), in crop years 2007/08 and 2008/09; in 9.7 x 7.6 m= 73.7 m2 plots separated by soil levees. The experimental design used was randomized blocks with three replications. The treatments applied were imazethapyr (75 g a.i. ha-1) + imazapic (25 g a.i. ha-1) (Only®), bispyribacsodium (50 g a.i. ha-1), penoxsulan (48 a.i. g ha-1), clomazone (600 g a.i. ha-1), quinclorac (375 g a.i. ha-1), carbofuran (400 g a.i. ha-1) and fipronil (37.5 g a.i. ha-1) as well as a control block. In Experiment I, the agrochemicals persistence decreased in the following order: quinclorac > bispyribac-sodium = penoxsulan > carbofuran > imazapic > imazethapyr = fipronil > clomazone, detected for 84, 60, 60, 42, 39, 28, 28 e 25 days, respectively, (means of crop years 2007/08 and 2008/09). Quinclorac shows the greatest dissipation time (DT50) with 15.4 days, whilst clomazone exhibited the smallest DT50 value, 1.9 days. On Experiment II, results show that the isolated application of the herbicides and insecticides tested did not result in noticeable water quality alteration when compared to the control treatment. In general, physical, chemical and biological parameters remained below the values recommended by the environmental agencies used as reference for this study. In Experiment III, results indicated that Rotifers had the highest abundance in the zooplankton community, with Polyarthra as the most abundant genus; it was also concluded that the agrochemicals had little effect over the Rotifera and Copepoda groups (adult and nauplii). |
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2017-05-052017-05-052010-02-26REIMCHE, Geovane Boschmann. Impact of agrochemicals used in rice paddy fields on irrigation water quality and zooplankton community. 2010. 116 f. Dissertação (Mestrado em Agronomia) - Universidade Federal de Santa Maria, Santa Maria, 2010.http://repositorio.ufsm.br/handle/1/5032Agrochemicals are intensely used on rice (Orysa sativa L.) paddy culture, and depending on their environmental persistence and toxicity they may contaminate water bodies and affect non-target organisms. Both herbicides and insecticides are recommended for use in rice culture in southern Brazil. This study aimed was divided into three different experiments, with the following aims: (i) to determine the persistence of the herbicides imazethapyr + imazapic (Only®), bispyribac-sodium, penoxsulan, clomazone, and quinclorac and of the insecticides carbofuran and fipronil in irrigation water; (ii) to investigate the effect of these agrochemicals on physical, chemical and biological water quality; and, (iii) to investigate the effects of these agrochemicals on the native zooplanktonic biota of rice paddy fields cultivated under the direct seeding system. The field experiment was carried out in Santa Maria (RS), at the Federal University of Santa Maria (UFSM), in crop years 2007/08 and 2008/09; in 9.7 x 7.6 m= 73.7 m2 plots separated by soil levees. The experimental design used was randomized blocks with three replications. The treatments applied were imazethapyr (75 g a.i. ha-1) + imazapic (25 g a.i. ha-1) (Only®), bispyribacsodium (50 g a.i. ha-1), penoxsulan (48 a.i. g ha-1), clomazone (600 g a.i. ha-1), quinclorac (375 g a.i. ha-1), carbofuran (400 g a.i. ha-1) and fipronil (37.5 g a.i. ha-1) as well as a control block. In Experiment I, the agrochemicals persistence decreased in the following order: quinclorac > bispyribac-sodium = penoxsulan > carbofuran > imazapic > imazethapyr = fipronil > clomazone, detected for 84, 60, 60, 42, 39, 28, 28 e 25 days, respectively, (means of crop years 2007/08 and 2008/09). Quinclorac shows the greatest dissipation time (DT50) with 15.4 days, whilst clomazone exhibited the smallest DT50 value, 1.9 days. On Experiment II, results show that the isolated application of the herbicides and insecticides tested did not result in noticeable water quality alteration when compared to the control treatment. In general, physical, chemical and biological parameters remained below the values recommended by the environmental agencies used as reference for this study. In Experiment III, results indicated that Rotifers had the highest abundance in the zooplankton community, with Polyarthra as the most abundant genus; it was also concluded that the agrochemicals had little effect over the Rotifera and Copepoda groups (adult and nauplii).A lavoura de arroz (Orysa sativa L.) irrigado utiliza agroquímicos intensamente, que, dependendo da sua persistência no ambiente e toxicidade, podem contaminar corpos d água e afetar organismos não-alvo. Os herbicidas e os inseticidas são agrotóxicos recomendados para o arroz irrigado no sul do Brasil. Este estudo foi desenvolvido em três experimentos, os quais tiveram por objetivos: (i) determinar a persistência dos herbicidas imazetapir + imazapique (Only®), bispiribaque-sódico, penoxsulam, clomazona, quincloraque, e dos inseticidas carbofurano e fipronil na água de irrigação em áreas cultivadas com arroz irrigado; (ii) investigar o efeito destes agrotóxicos na qualidade física, química e biológica da água; e, (iii) investigar os efeitos destes agrotóxicos na densidade da biota zooplanctônica natural no arroz cultivado no sistema de plantio direto. O experimento foi realizado a campo, na UFSM, em Santa Maria (RS), nas safras de 2007/08 e 2008/09; e conduzido em parcelas de 9,7 x 7,6 m= 73,7 m2 isoladas por taipas. O experimento foi conduzido com delineamento de blocos ao acaso com três repetições. Cada parcela recebeu de forma aleatória um tratamento, onde foram aplicadas a mistura dos herbicidas imazetapir (75 g i.a. ha-1) com imazapique (25 g i.a. ha-1), (Only®) bispiribaque-sódico (50 g i.a. ha-1), penoxsulam (48 i.a. g ha-1), clomazona (600 g i.a. ha-1), quincloraque (375 g i.a. ha-1), e os inseticidas carbofurano (400 g i.a. ha-1) e fipronil (37,5 g i.a. ha-1), além do tratamento controle. No Experimento I, os resultados mostraram que na média das duas safras (2007/08 e 2008/09) a persistência dos agrotóxicos decresceu na seguinte ordem: quincloraque > bispiribaque sódico = penoxsulam > carbofurano > imazapique > imazetapir = fipronil > clomazona com persistência de 84, 60, 60, 42, 39, 28, 28 e 25 dias, respectivamente. Quincloraque registrou maior tempo de dissipação (DT50) com 15,4 dias, enquanto clomazona apresentou o menor valor de DT50 na água com 1,9 dias. No Experimento II, os resultados mostraram que a aplicação isolada dos herbicidas e os inseticidas testados não acarretam grande alteração na qualidade da água quando comparada à qualidade da água de irrigação do tratamento controle (padrão). Em geral, os parâmetros físicos e químicos da água estiveram abaixo dos utilizados pelas agências ambientais e usados como referência neste estudo. No Experimento III, os resultados indicaram que Rotífera foi o grupo que apresentou maior abundância na comunidade zooplanctônica, destacando-se o gênero Polyarthra como o mais abundante; e também que agrotóxicos provocaram poucas alterações na abundância de organismos dos grupos Rotifera e Copepoda (adulto e nauplio).Coordenação de Aperfeiçoamento de Pessoal de Nível Superiorapplication/pdfporUniversidade Federal de Santa MariaPrograma de Pós-Graduação em AgronomiaUFSMBRAgronomiaOryza sativaAgrotóxicosDT50Qualidade da águaZooplânctonSustentabilidadeOryza sativaAgrochemicalsDT50Water qualityZooplanktonSustainabilityCNPQ::CIENCIAS AGRARIAS::AGRONOMIAImpacto de agroquímicos usados na lavoura de arroz irrigado sobre a qualidade da água de irrigação e na comunidade zooplanctônicaImpact of agrochemicals used in rice paddy fields on irrigation water quality and zooplankton communityinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisMachado, Sérgio Luiz de Oliveirahttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4780229P3Oliveira, Maria Angelicahttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4723571J7Pedrozo, Catarina da Silvahttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4791972T0http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4757171T7Reimche, Geovane Boschmann500100000009400500500500300e60531fa-cb8f-416b-b6ca-73f0fb0c04288a7438f9-3794-4a1f-9173-bcdb9490d1610fdde02d-c880-4f54-91d7-eea98df23ea54977e07d-711d-41be-8401-dff266243649info:eu-repo/semantics/openAccessreponame:Biblioteca Digital de Teses e Dissertações do UFSMinstname:Universidade Federal de Santa Maria (UFSM)instacron:UFSMORIGINALREIMCHE, GEOVANE BOSCHMANN.pdfapplication/pdf7148063http://repositorio.ufsm.br/bitstream/1/5032/1/REIMCHE%2c%20GEOVANE%20BOSCHMANN.pdf060ad593f60c5df49b307f61dc249e5cMD51TEXTREIMCHE, GEOVANE BOSCHMANN.pdf.txtREIMCHE, GEOVANE BOSCHMANN.pdf.txtExtracted texttext/plain193260http://repositorio.ufsm.br/bitstream/1/5032/2/REIMCHE%2c%20GEOVANE%20BOSCHMANN.pdf.txt56020ef7d1d2475d7be1eb1f20766efbMD52THUMBNAILREIMCHE, GEOVANE BOSCHMANN.pdf.jpgREIMCHE, GEOVANE BOSCHMANN.pdf.jpgIM Thumbnailimage/jpeg5029http://repositorio.ufsm.br/bitstream/1/5032/3/REIMCHE%2c%20GEOVANE%20BOSCHMANN.pdf.jpg5ba1593e8b9872982267c39bff28eea2MD531/50322017-07-25 11:13:23.953oai:repositorio.ufsm.br:1/5032Biblioteca Digital de Teses e Dissertaçõeshttps://repositorio.ufsm.br/ONGhttps://repositorio.ufsm.br/oai/requestatendimento.sib@ufsm.br||tedebc@gmail.comopendoar:2017-07-25T14:13:23Biblioteca Digital de Teses e Dissertações do UFSM - Universidade Federal de Santa Maria (UFSM)false |
dc.title.por.fl_str_mv |
Impacto de agroquímicos usados na lavoura de arroz irrigado sobre a qualidade da água de irrigação e na comunidade zooplanctônica |
dc.title.alternative.eng.fl_str_mv |
Impact of agrochemicals used in rice paddy fields on irrigation water quality and zooplankton community |
title |
Impacto de agroquímicos usados na lavoura de arroz irrigado sobre a qualidade da água de irrigação e na comunidade zooplanctônica |
spellingShingle |
Impacto de agroquímicos usados na lavoura de arroz irrigado sobre a qualidade da água de irrigação e na comunidade zooplanctônica Reimche, Geovane Boschmann Oryza sativa Agrotóxicos DT50 Qualidade da água Zooplâncton Sustentabilidade Oryza sativa Agrochemicals DT50 Water quality Zooplankton Sustainability CNPQ::CIENCIAS AGRARIAS::AGRONOMIA |
title_short |
Impacto de agroquímicos usados na lavoura de arroz irrigado sobre a qualidade da água de irrigação e na comunidade zooplanctônica |
title_full |
Impacto de agroquímicos usados na lavoura de arroz irrigado sobre a qualidade da água de irrigação e na comunidade zooplanctônica |
title_fullStr |
Impacto de agroquímicos usados na lavoura de arroz irrigado sobre a qualidade da água de irrigação e na comunidade zooplanctônica |
title_full_unstemmed |
Impacto de agroquímicos usados na lavoura de arroz irrigado sobre a qualidade da água de irrigação e na comunidade zooplanctônica |
title_sort |
Impacto de agroquímicos usados na lavoura de arroz irrigado sobre a qualidade da água de irrigação e na comunidade zooplanctônica |
author |
Reimche, Geovane Boschmann |
author_facet |
Reimche, Geovane Boschmann |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
Machado, Sérgio Luiz de Oliveira |
dc.contributor.advisor1Lattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4780229P3 |
dc.contributor.referee1.fl_str_mv |
Oliveira, Maria Angelica |
dc.contributor.referee1Lattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4723571J7 |
dc.contributor.referee2.fl_str_mv |
Pedrozo, Catarina da Silva |
dc.contributor.referee2Lattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4791972T0 |
dc.contributor.authorLattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4757171T7 |
dc.contributor.author.fl_str_mv |
Reimche, Geovane Boschmann |
contributor_str_mv |
Machado, Sérgio Luiz de Oliveira Oliveira, Maria Angelica Pedrozo, Catarina da Silva |
dc.subject.por.fl_str_mv |
Oryza sativa Agrotóxicos DT50 Qualidade da água Zooplâncton Sustentabilidade |
topic |
Oryza sativa Agrotóxicos DT50 Qualidade da água Zooplâncton Sustentabilidade Oryza sativa Agrochemicals DT50 Water quality Zooplankton Sustainability CNPQ::CIENCIAS AGRARIAS::AGRONOMIA |
dc.subject.eng.fl_str_mv |
Oryza sativa Agrochemicals DT50 Water quality Zooplankton Sustainability |
dc.subject.cnpq.fl_str_mv |
CNPQ::CIENCIAS AGRARIAS::AGRONOMIA |
description |
Agrochemicals are intensely used on rice (Orysa sativa L.) paddy culture, and depending on their environmental persistence and toxicity they may contaminate water bodies and affect non-target organisms. Both herbicides and insecticides are recommended for use in rice culture in southern Brazil. This study aimed was divided into three different experiments, with the following aims: (i) to determine the persistence of the herbicides imazethapyr + imazapic (Only®), bispyribac-sodium, penoxsulan, clomazone, and quinclorac and of the insecticides carbofuran and fipronil in irrigation water; (ii) to investigate the effect of these agrochemicals on physical, chemical and biological water quality; and, (iii) to investigate the effects of these agrochemicals on the native zooplanktonic biota of rice paddy fields cultivated under the direct seeding system. The field experiment was carried out in Santa Maria (RS), at the Federal University of Santa Maria (UFSM), in crop years 2007/08 and 2008/09; in 9.7 x 7.6 m= 73.7 m2 plots separated by soil levees. The experimental design used was randomized blocks with three replications. The treatments applied were imazethapyr (75 g a.i. ha-1) + imazapic (25 g a.i. ha-1) (Only®), bispyribacsodium (50 g a.i. ha-1), penoxsulan (48 a.i. g ha-1), clomazone (600 g a.i. ha-1), quinclorac (375 g a.i. ha-1), carbofuran (400 g a.i. ha-1) and fipronil (37.5 g a.i. ha-1) as well as a control block. In Experiment I, the agrochemicals persistence decreased in the following order: quinclorac > bispyribac-sodium = penoxsulan > carbofuran > imazapic > imazethapyr = fipronil > clomazone, detected for 84, 60, 60, 42, 39, 28, 28 e 25 days, respectively, (means of crop years 2007/08 and 2008/09). Quinclorac shows the greatest dissipation time (DT50) with 15.4 days, whilst clomazone exhibited the smallest DT50 value, 1.9 days. On Experiment II, results show that the isolated application of the herbicides and insecticides tested did not result in noticeable water quality alteration when compared to the control treatment. In general, physical, chemical and biological parameters remained below the values recommended by the environmental agencies used as reference for this study. In Experiment III, results indicated that Rotifers had the highest abundance in the zooplankton community, with Polyarthra as the most abundant genus; it was also concluded that the agrochemicals had little effect over the Rotifera and Copepoda groups (adult and nauplii). |
publishDate |
2010 |
dc.date.issued.fl_str_mv |
2010-02-26 |
dc.date.accessioned.fl_str_mv |
2017-05-05 |
dc.date.available.fl_str_mv |
2017-05-05 |
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info:eu-repo/semantics/publishedVersion |
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info:eu-repo/semantics/masterThesis |
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masterThesis |
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publishedVersion |
dc.identifier.citation.fl_str_mv |
REIMCHE, Geovane Boschmann. Impact of agrochemicals used in rice paddy fields on irrigation water quality and zooplankton community. 2010. 116 f. Dissertação (Mestrado em Agronomia) - Universidade Federal de Santa Maria, Santa Maria, 2010. |
dc.identifier.uri.fl_str_mv |
http://repositorio.ufsm.br/handle/1/5032 |
identifier_str_mv |
REIMCHE, Geovane Boschmann. Impact of agrochemicals used in rice paddy fields on irrigation water quality and zooplankton community. 2010. 116 f. Dissertação (Mestrado em Agronomia) - Universidade Federal de Santa Maria, Santa Maria, 2010. |
url |
http://repositorio.ufsm.br/handle/1/5032 |
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por |
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Universidade Federal de Santa Maria |
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UFSM |
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Agronomia |
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Universidade Federal de Santa Maria |
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