Mobility of Pratylenchus coffeae in segmented soil columns submitted to water flows and plant stimuli
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Semina. Ciências Agrárias (Online) |
Texto Completo: | https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/33643 |
Resumo: | The root-lesion nematode Pratylenchus spp. causes a high-severity disease, promoting high economic losses in various crops of agricultural importance. The nematode control is difficult, especially after introduction into the area. Studies on the migration of this parasite in the soil are scarce. However, understanding nematode behavior in the soil is fundamental to increase the efficiency of management practices, especially in irrigated agriculture. This study aimed to evaluate the influence of water flow and plant stimulus on Pratylenchus coffeae mobility in segmented soil columns. The columns were segmented into 11 rings of 1 cm long filled with washed sand, one of the ends exposed to a bait, and submitted to flows of 0, 3, 7 cm3/min of water. Baits for nematode attraction and repelling consisted of sectioned tubers of yam (Dioscorea cayennensis) and cut leaves of neem (Azadirachta indica), respectively, and the absence of baits as the control. Nematodes were injected into the central segment of the column, and migration and presence in water leaching were determined five days after soil infestation. Mobility of P. coffeae varied with water flow and bait type. In the absence of water flow, nematodes migrated in the opposite direction to the neem baits, but migration was well distributed in the presence of yam baits, with specimens present in all column segments. The nematode had significantly higher resistance to water flow of 3 cm3/min in the presence of yam baits. No nematodes were found in the water leached at flows of 3 and 7 cm3/min in the absence of bait. Key words: Azadirachta indica. Dioscorea cayennensis. Lesion nematode. Soil dispersion. |
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Mobility of Pratylenchus coffeae in segmented soil columns submitted to water flows and plant stimuliMobility of Pratylenchus coffeae in segmented soil columns submitted to water flows and plant stimuliAzadirachta indicaDioscorea cayennensisDispersão no soloNematoide das lesões radiculares.The root-lesion nematode Pratylenchus spp. causes a high-severity disease, promoting high economic losses in various crops of agricultural importance. The nematode control is difficult, especially after introduction into the area. Studies on the migration of this parasite in the soil are scarce. However, understanding nematode behavior in the soil is fundamental to increase the efficiency of management practices, especially in irrigated agriculture. This study aimed to evaluate the influence of water flow and plant stimulus on Pratylenchus coffeae mobility in segmented soil columns. The columns were segmented into 11 rings of 1 cm long filled with washed sand, one of the ends exposed to a bait, and submitted to flows of 0, 3, 7 cm3/min of water. Baits for nematode attraction and repelling consisted of sectioned tubers of yam (Dioscorea cayennensis) and cut leaves of neem (Azadirachta indica), respectively, and the absence of baits as the control. Nematodes were injected into the central segment of the column, and migration and presence in water leaching were determined five days after soil infestation. Mobility of P. coffeae varied with water flow and bait type. In the absence of water flow, nematodes migrated in the opposite direction to the neem baits, but migration was well distributed in the presence of yam baits, with specimens present in all column segments. The nematode had significantly higher resistance to water flow of 3 cm3/min in the presence of yam baits. No nematodes were found in the water leached at flows of 3 and 7 cm3/min in the absence of bait. Key words: Azadirachta indica. Dioscorea cayennensis. Lesion nematode. Soil dispersion.O nematoide das lesões radiculares Pratylenchus spp. causa doença de alta severidade promovendo elevadas perdas econômicas em inúmeras culturas de importância agrícola. O controle é difícil, principalmente depois de sua introdução na área. Estudos sobre a migração desse parasito no solo são escassos. No entanto, entender o comportamento do nematoide no solo é fundamental para aumentar a eficiência das práticas de manejo, especialmente em agricultura irrigada. O objetivo do estudo foi avaliar a influência do fluxo de água e do estímulo vegetal na mobilidade de Pratylenchus coffeae em colunas de solo. As colunas foram segmentadas em 11 anéis de 1 cm de comprimento, preenchidas com areia lavada, tendo uma das extremidades exposta à isca e submetida a fluxos de 0, 3, 7 cm3/min de água. As iscas para atração e afastamento do nematoide consistiram de túberas seccionadas de inhame (Dioscorea cayennensis) e folhas picotadas de nim (Azadirachta indica), respectivamente, e a ausência de iscas como testemunha. Os nematoides foram injetados no segmento central da coluna e a migração e lixiviação determinadas cinco dias após infestação do solo. A mobilidade de P. coffeae variou com fluxo de água e tipo de isca. Na ausência de fluxo de água os nematoides migraram em sentido contrário às iscas de nim, mas a migração foi bem distribuída na presença de iscas de inhame, com espécimes presentes em todos os segmentos da coluna. Quando aplicado fluxo de 3 cm3/min de água, P.coffeae ofereceu significativamente maior resistência ao fluxo na presença de iscas de inhame. Os nematoides não foram lixiviados nos fluxos de 3 e 7 cm3/min de água na ausência de isca.UEL2019-08-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionPesquisa em coluna de soloapplication/pdfhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/3364310.5433/1679-0359.2019v40n5Supl1p2189Semina: Ciências Agrárias; Vol. 40 No. 5Supl1 (2019); 2189-2200Semina: Ciências Agrárias; v. 40 n. 5Supl1 (2019); 2189-22001679-03591676-546Xreponame:Semina. Ciências Agrárias (Online)instname:Universidade Estadual de Londrina (UEL)instacron:UELenghttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/33643/25841Copyright (c) 2019 Semina: Ciências Agráriashttp://creativecommons.org/licenses/by-nc/4.0info:eu-repo/semantics/openAccessBarros, Bruno Eduardo AlvesPedrosa, Elvira Maria RegisSilva, Ênio Farias de FrançaRolim, Mario MonteiroBarros, Patrícia Ângelo de2022-10-18T15:56:33Zoai:ojs.pkp.sfu.ca:article/33643Revistahttp://www.uel.br/revistas/uel/index.php/semagrariasPUBhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/oaisemina.agrarias@uel.br1679-03591676-546Xopendoar:2022-10-18T15:56:33Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL)false |
dc.title.none.fl_str_mv |
Mobility of Pratylenchus coffeae in segmented soil columns submitted to water flows and plant stimuli Mobility of Pratylenchus coffeae in segmented soil columns submitted to water flows and plant stimuli |
title |
Mobility of Pratylenchus coffeae in segmented soil columns submitted to water flows and plant stimuli |
spellingShingle |
Mobility of Pratylenchus coffeae in segmented soil columns submitted to water flows and plant stimuli Barros, Bruno Eduardo Alves Azadirachta indica Dioscorea cayennensis Dispersão no solo Nematoide das lesões radiculares. |
title_short |
Mobility of Pratylenchus coffeae in segmented soil columns submitted to water flows and plant stimuli |
title_full |
Mobility of Pratylenchus coffeae in segmented soil columns submitted to water flows and plant stimuli |
title_fullStr |
Mobility of Pratylenchus coffeae in segmented soil columns submitted to water flows and plant stimuli |
title_full_unstemmed |
Mobility of Pratylenchus coffeae in segmented soil columns submitted to water flows and plant stimuli |
title_sort |
Mobility of Pratylenchus coffeae in segmented soil columns submitted to water flows and plant stimuli |
author |
Barros, Bruno Eduardo Alves |
author_facet |
Barros, Bruno Eduardo Alves Pedrosa, Elvira Maria Regis Silva, Ênio Farias de França Rolim, Mario Monteiro Barros, Patrícia Ângelo de |
author_role |
author |
author2 |
Pedrosa, Elvira Maria Regis Silva, Ênio Farias de França Rolim, Mario Monteiro Barros, Patrícia Ângelo de |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Barros, Bruno Eduardo Alves Pedrosa, Elvira Maria Regis Silva, Ênio Farias de França Rolim, Mario Monteiro Barros, Patrícia Ângelo de |
dc.subject.por.fl_str_mv |
Azadirachta indica Dioscorea cayennensis Dispersão no solo Nematoide das lesões radiculares. |
topic |
Azadirachta indica Dioscorea cayennensis Dispersão no solo Nematoide das lesões radiculares. |
description |
The root-lesion nematode Pratylenchus spp. causes a high-severity disease, promoting high economic losses in various crops of agricultural importance. The nematode control is difficult, especially after introduction into the area. Studies on the migration of this parasite in the soil are scarce. However, understanding nematode behavior in the soil is fundamental to increase the efficiency of management practices, especially in irrigated agriculture. This study aimed to evaluate the influence of water flow and plant stimulus on Pratylenchus coffeae mobility in segmented soil columns. The columns were segmented into 11 rings of 1 cm long filled with washed sand, one of the ends exposed to a bait, and submitted to flows of 0, 3, 7 cm3/min of water. Baits for nematode attraction and repelling consisted of sectioned tubers of yam (Dioscorea cayennensis) and cut leaves of neem (Azadirachta indica), respectively, and the absence of baits as the control. Nematodes were injected into the central segment of the column, and migration and presence in water leaching were determined five days after soil infestation. Mobility of P. coffeae varied with water flow and bait type. In the absence of water flow, nematodes migrated in the opposite direction to the neem baits, but migration was well distributed in the presence of yam baits, with specimens present in all column segments. The nematode had significantly higher resistance to water flow of 3 cm3/min in the presence of yam baits. No nematodes were found in the water leached at flows of 3 and 7 cm3/min in the absence of bait. Key words: Azadirachta indica. Dioscorea cayennensis. Lesion nematode. Soil dispersion. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-08-07 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Pesquisa em coluna de solo |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/33643 10.5433/1679-0359.2019v40n5Supl1p2189 |
url |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/33643 |
identifier_str_mv |
10.5433/1679-0359.2019v40n5Supl1p2189 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/33643/25841 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2019 Semina: Ciências Agrárias http://creativecommons.org/licenses/by-nc/4.0 info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2019 Semina: Ciências Agrárias http://creativecommons.org/licenses/by-nc/4.0 |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
UEL |
publisher.none.fl_str_mv |
UEL |
dc.source.none.fl_str_mv |
Semina: Ciências Agrárias; Vol. 40 No. 5Supl1 (2019); 2189-2200 Semina: Ciências Agrárias; v. 40 n. 5Supl1 (2019); 2189-2200 1679-0359 1676-546X reponame:Semina. Ciências Agrárias (Online) instname:Universidade Estadual de Londrina (UEL) instacron:UEL |
instname_str |
Universidade Estadual de Londrina (UEL) |
instacron_str |
UEL |
institution |
UEL |
reponame_str |
Semina. Ciências Agrárias (Online) |
collection |
Semina. Ciências Agrárias (Online) |
repository.name.fl_str_mv |
Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL) |
repository.mail.fl_str_mv |
semina.agrarias@uel.br |
_version_ |
1799306080242630656 |