Tratamento de sementes de soja (Glycine max (L.) Merr.) com abamectina, tiabendazol e acibenzolar-S-metil no manejo de nematóides
Autor(a) principal: | |
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Data de Publicação: | 2009 |
Tipo de documento: | Tese |
Idioma: | por |
Título da fonte: | Repositório Institucional da UFG |
Texto Completo: | http://repositorio.bc.ufg.br/tede/handle/tde/446 |
Resumo: | Despite its presence in many soybean production regions in Brazil and its high damage potential, soybean cyst nematode (Heterodera glycines), has been efficiently controlled by crop rotation and the use of soybean cultivars resistant to the main nematode races in the country. However, the continuous use of those cultivars can change the nematode populations leading to resistance break down. Few resistance genes availability, associated to the difficulties of inserting multiple races resitance to high productivity cultivares without yield drag tends to worsen the long-term perspectives of nematode anagement. Thus, auxiliary control measures, aiming at minimizing the selection pressure effects, exercised by the resistant varieties on nematode of detection frequency in number of areas and populational density of root-lesion nematode (Pratylenchus brachyurus), has been related in soybean main growing regions in Brazil. Although its potential of damage to soybean crop is still controversial, its poliphagous behavior leaves few options for crop rotation with soybean, and can increase their populations to the economic damage levels in the near future. With the objective of testing the nematicide effect of abamectin as seed treatment, and its interaction with other products on population management of these nematode species, it was carried out greenhouse and field trials, testing three doses of abamectin with or without thiabendazol or acibenzolar-S-methyl addition, for H. glycines and P. brachyurus control, respectively. Although not showing effect on soybean yield, in field tests, the dose of 50 g of abamectin.ha-¹ reduced significantly the number of eggs produced by H. glycines at 30 days after planting, the number of females in the plants roots at 45 days, with reduction in the number of females and cysts recovered from the soil at root zone at 60 days, in the susceptible cultivar. Thiabendazole addition reduced the number of eggs per female at 60 days, but not in other assessments carried out 30 and 45 days after planting. However, the same was not observed for the soybean cultivar resistant to race 14. In all assessment date, that cultivar produced a number of females significantly smaller in the roots and soil and higher yield than the susceptible cultivar. In pot tests under greenhouse conditions, it was observed significant differences between cultivars, besides the treatments made in the seeds, in assessments carried out 30 days after planting. It was not observed significant differences to seed treatments with abamectin or acibenzolar-S-methyl on P. brachyurus populations recovered from soybean roots, neither among the cultivars tested in field nor in greenhouse conditions. It was concluded that seed treatment with abamectin at 50 g. ha-¹ as seed treatment is effective at reducing the H. glycines population and can be used as one more option against the directional selection imposed by the use of soybean resistant cultivars. |
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ROCHA, Mara Rúbia dahttp://lattes.cnpq.br/4660306671671575http://lattes.cnpq.br/8306520887753839VITTI, Agnelo José2014-07-29T14:52:07Z2012-05-292009-06-06VITTI, Agnelo José. Soybean seed treatment with abamectin, thiabendazole and acibenzolar-S-methyl for nematodes management. 2009. 120 f. Tese (Doutorado em Ciências Agrárias) - Universidade Federal de Goiás, Goiânia, 2009.http://repositorio.bc.ufg.br/tede/handle/tde/446Despite its presence in many soybean production regions in Brazil and its high damage potential, soybean cyst nematode (Heterodera glycines), has been efficiently controlled by crop rotation and the use of soybean cultivars resistant to the main nematode races in the country. However, the continuous use of those cultivars can change the nematode populations leading to resistance break down. Few resistance genes availability, associated to the difficulties of inserting multiple races resitance to high productivity cultivares without yield drag tends to worsen the long-term perspectives of nematode anagement. Thus, auxiliary control measures, aiming at minimizing the selection pressure effects, exercised by the resistant varieties on nematode of detection frequency in number of areas and populational density of root-lesion nematode (Pratylenchus brachyurus), has been related in soybean main growing regions in Brazil. Although its potential of damage to soybean crop is still controversial, its poliphagous behavior leaves few options for crop rotation with soybean, and can increase their populations to the economic damage levels in the near future. With the objective of testing the nematicide effect of abamectin as seed treatment, and its interaction with other products on population management of these nematode species, it was carried out greenhouse and field trials, testing three doses of abamectin with or without thiabendazol or acibenzolar-S-methyl addition, for H. glycines and P. brachyurus control, respectively. Although not showing effect on soybean yield, in field tests, the dose of 50 g of abamectin.ha-¹ reduced significantly the number of eggs produced by H. glycines at 30 days after planting, the number of females in the plants roots at 45 days, with reduction in the number of females and cysts recovered from the soil at root zone at 60 days, in the susceptible cultivar. Thiabendazole addition reduced the number of eggs per female at 60 days, but not in other assessments carried out 30 and 45 days after planting. However, the same was not observed for the soybean cultivar resistant to race 14. In all assessment date, that cultivar produced a number of females significantly smaller in the roots and soil and higher yield than the susceptible cultivar. In pot tests under greenhouse conditions, it was observed significant differences between cultivars, besides the treatments made in the seeds, in assessments carried out 30 days after planting. It was not observed significant differences to seed treatments with abamectin or acibenzolar-S-methyl on P. brachyurus populations recovered from soybean roots, neither among the cultivars tested in field nor in greenhouse conditions. It was concluded that seed treatment with abamectin at 50 g. ha-¹ as seed treatment is effective at reducing the H. glycines population and can be used as one more option against the directional selection imposed by the use of soybean resistant cultivars.O nematóide de cisto da soja (Heterodera glycines), apesar de sua presença em solos das principais regiões produtoras de soja do Brasil e de seu potencial de dano, tem sido eficientemente controlado com a rotação de culturas e utilização de cultivares resistentes às principais raças presentes no país. Entretanto, a utilização contínua destas cultivares, pode levar a mudanças populacionais que venham quebrar estas resistências. A pouca disponibilidade de gens de resistência, vinculado à dificuldade de inserção de resistência a múltiplas raças às cultivares elite de soja, sem decréscimo de produtividade, tende a agravar as perspectivas a longo prazo. Assim, medidas de controle auxiliares, visando minimizar os efeitos da pressão de seleção exercida pelas cultivares resistentes são recomendadas para o manejo populacional de H. glycines. O aumento das detecções do nematóide das lesões radiculares (Pratylenchus brachyurus), tanto em número de áreas, como na densidade populacional por área, tem sido relatado nas principais regiões de cultivo de soja no Brasil. Apesar do seu potencial de dano à cultura ainda ser controverso, seu comportamento polífago, deixa poucas opções para rotação de cultivos com a soja, podendo elevar as suas populações a níveis de dano econômico em futuro próximo. Visando testar o efeito do nematicida abamectina, via tratamento de sementes, e sua interação com outros produtos, no manejo populacional destes nematóides, foram conduzidos experimentos de campo e casa de vegetação, sendo testadas três doses de abamectina com ou sem a adição de tiabendazol ou acibenzolar-S-metil, para o controle de H. glycines, ou P. brachyurus, respectivamente. Apesar de não ter demonstrado efeito sobre a produtividade da cultura nos testes de campo a dose de 50 g de abamectina.ha-¹ reduziu significativamente o número de ovos produzidos por fêmea de H. glycines aos 30 dias após a semeadura (DAS), o número de fêmeas nas raízes das plantas aos 45 DAS, com consequente redução no número de cistos recuperados no solo aos 60 DAS, na cultivar suscetível à raça 14, BRSGO Luziânia. A adição de tiabendazol, reduziu o número de ovos por fêmea aos 60 DAS, mas não nas demais avaliações. Entretanto, estas diferenças não foram observadas para a cultivar resistente, BRSGO Ipameri. Em todas as avaliações, esta cultivar apresentou número significativamente menor de fêmeas nas raízes e no solo, e produtividade de grãos superior ao observado em BRSGO Luziânia. Em testes em vasos, conduzidos em casa de vegetação, houve diferença significativa entre cultivares, mas não entre os tratamentos com fungicidas efetuados nas sementes, nas avaliações conduzidas ao 30 DAS. Não foram observadas diferenças significativas dos tratamentos com abamectina ou acibenzolar-S-metil nas populações de P. brachyurus, recuperados das raízes de plantas de soja, nem entre as cultivares testadas em campo ou casa de vegetação. Frente aos resultados obtidos conclui-se que o tratamento com abamectina a 50 g.ha-¹, via tratamento de sementes, é efetivo na redução populacional de H. glycines e pode ser utilizado como mais uma ferramenta contra a seleção direcional imposta pelo uso de cultivares de soja resistentes.Made available in DSpace on 2014-07-29T14:52:07Z (GMT). No. of bitstreams: 1 Agnelo Jose Vitti.pdf: 640233 bytes, checksum: ecfaee175905565f39d3d5a461af0b91 (MD5) Previous issue date: 2009-06-06application/pdfhttp://repositorio.bc.ufg.br/TEDE/retrieve/3027/Agnelo%20Jose%20Vitti.pdf.jpgporUniversidade Federal de GoiásDoutorado em AgronomiaUFGBRCiências AgráriasHeterodera glycinesPratylenchus brachyurusControle químicoTratamento de sementesSoja-semente-tratamento; Nematóide de cisto da soja-controle químicoHeterodera glycinesPratylenchus brachyurusChemical controlSeed treatmentCNPQ::CIENCIAS AGRARIAS::AGRONOMIATratamento de sementes de soja (Glycine max (L.) 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dc.title.por.fl_str_mv |
Tratamento de sementes de soja (Glycine max (L.) Merr.) com abamectina, tiabendazol e acibenzolar-S-metil no manejo de nematóides |
dc.title.alternative.eng.fl_str_mv |
Soybean seed treatment with abamectin, thiabendazole and acibenzolar-S-methyl for nematodes management |
title |
Tratamento de sementes de soja (Glycine max (L.) Merr.) com abamectina, tiabendazol e acibenzolar-S-metil no manejo de nematóides |
spellingShingle |
Tratamento de sementes de soja (Glycine max (L.) Merr.) com abamectina, tiabendazol e acibenzolar-S-metil no manejo de nematóides VITTI, Agnelo José Heterodera glycines Pratylenchus brachyurus Controle químico Tratamento de sementes Soja-semente-tratamento; Nematóide de cisto da soja-controle químico Heterodera glycines Pratylenchus brachyurus Chemical control Seed treatment CNPQ::CIENCIAS AGRARIAS::AGRONOMIA |
title_short |
Tratamento de sementes de soja (Glycine max (L.) Merr.) com abamectina, tiabendazol e acibenzolar-S-metil no manejo de nematóides |
title_full |
Tratamento de sementes de soja (Glycine max (L.) Merr.) com abamectina, tiabendazol e acibenzolar-S-metil no manejo de nematóides |
title_fullStr |
Tratamento de sementes de soja (Glycine max (L.) Merr.) com abamectina, tiabendazol e acibenzolar-S-metil no manejo de nematóides |
title_full_unstemmed |
Tratamento de sementes de soja (Glycine max (L.) Merr.) com abamectina, tiabendazol e acibenzolar-S-metil no manejo de nematóides |
title_sort |
Tratamento de sementes de soja (Glycine max (L.) Merr.) com abamectina, tiabendazol e acibenzolar-S-metil no manejo de nematóides |
author |
VITTI, Agnelo José |
author_facet |
VITTI, Agnelo José |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
ROCHA, Mara Rúbia da |
dc.contributor.advisor1Lattes.fl_str_mv |
http://lattes.cnpq.br/4660306671671575 |
dc.contributor.authorLattes.fl_str_mv |
http://lattes.cnpq.br/8306520887753839 |
dc.contributor.author.fl_str_mv |
VITTI, Agnelo José |
contributor_str_mv |
ROCHA, Mara Rúbia da |
dc.subject.por.fl_str_mv |
Heterodera glycines Pratylenchus brachyurus Controle químico Tratamento de sementes Soja-semente-tratamento; Nematóide de cisto da soja-controle químico |
topic |
Heterodera glycines Pratylenchus brachyurus Controle químico Tratamento de sementes Soja-semente-tratamento; Nematóide de cisto da soja-controle químico Heterodera glycines Pratylenchus brachyurus Chemical control Seed treatment CNPQ::CIENCIAS AGRARIAS::AGRONOMIA |
dc.subject.eng.fl_str_mv |
Heterodera glycines Pratylenchus brachyurus Chemical control Seed treatment |
dc.subject.cnpq.fl_str_mv |
CNPQ::CIENCIAS AGRARIAS::AGRONOMIA |
description |
Despite its presence in many soybean production regions in Brazil and its high damage potential, soybean cyst nematode (Heterodera glycines), has been efficiently controlled by crop rotation and the use of soybean cultivars resistant to the main nematode races in the country. However, the continuous use of those cultivars can change the nematode populations leading to resistance break down. Few resistance genes availability, associated to the difficulties of inserting multiple races resitance to high productivity cultivares without yield drag tends to worsen the long-term perspectives of nematode anagement. Thus, auxiliary control measures, aiming at minimizing the selection pressure effects, exercised by the resistant varieties on nematode of detection frequency in number of areas and populational density of root-lesion nematode (Pratylenchus brachyurus), has been related in soybean main growing regions in Brazil. Although its potential of damage to soybean crop is still controversial, its poliphagous behavior leaves few options for crop rotation with soybean, and can increase their populations to the economic damage levels in the near future. With the objective of testing the nematicide effect of abamectin as seed treatment, and its interaction with other products on population management of these nematode species, it was carried out greenhouse and field trials, testing three doses of abamectin with or without thiabendazol or acibenzolar-S-methyl addition, for H. glycines and P. brachyurus control, respectively. Although not showing effect on soybean yield, in field tests, the dose of 50 g of abamectin.ha-¹ reduced significantly the number of eggs produced by H. glycines at 30 days after planting, the number of females in the plants roots at 45 days, with reduction in the number of females and cysts recovered from the soil at root zone at 60 days, in the susceptible cultivar. Thiabendazole addition reduced the number of eggs per female at 60 days, but not in other assessments carried out 30 and 45 days after planting. However, the same was not observed for the soybean cultivar resistant to race 14. In all assessment date, that cultivar produced a number of females significantly smaller in the roots and soil and higher yield than the susceptible cultivar. In pot tests under greenhouse conditions, it was observed significant differences between cultivars, besides the treatments made in the seeds, in assessments carried out 30 days after planting. It was not observed significant differences to seed treatments with abamectin or acibenzolar-S-methyl on P. brachyurus populations recovered from soybean roots, neither among the cultivars tested in field nor in greenhouse conditions. It was concluded that seed treatment with abamectin at 50 g. ha-¹ as seed treatment is effective at reducing the H. glycines population and can be used as one more option against the directional selection imposed by the use of soybean resistant cultivars. |
publishDate |
2009 |
dc.date.issued.fl_str_mv |
2009-06-06 |
dc.date.available.fl_str_mv |
2012-05-29 |
dc.date.accessioned.fl_str_mv |
2014-07-29T14:52:07Z |
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info:eu-repo/semantics/publishedVersion |
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info:eu-repo/semantics/doctoralThesis |
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publishedVersion |
dc.identifier.citation.fl_str_mv |
VITTI, Agnelo José. Soybean seed treatment with abamectin, thiabendazole and acibenzolar-S-methyl for nematodes management. 2009. 120 f. Tese (Doutorado em Ciências Agrárias) - Universidade Federal de Goiás, Goiânia, 2009. |
dc.identifier.uri.fl_str_mv |
http://repositorio.bc.ufg.br/tede/handle/tde/446 |
identifier_str_mv |
VITTI, Agnelo José. Soybean seed treatment with abamectin, thiabendazole and acibenzolar-S-methyl for nematodes management. 2009. 120 f. Tese (Doutorado em Ciências Agrárias) - Universidade Federal de Goiás, Goiânia, 2009. |
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http://repositorio.bc.ufg.br/tede/handle/tde/446 |
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por |
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por |
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Universidade Federal de Goiás |
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UFG |
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BR |
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Ciências Agrárias |
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Universidade Federal de Goiás |
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