Effects of spitllebug feeding on forage and root production of Brachiaria decumbens and Brachiaria brizantha cv. Marandu (BRA-000019)
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Pesquisa Agropecuária Brasileira (Online) |
Texto Completo: | https://seer.sct.embrapa.br/index.php/pab/article/view/17201 |
Resumo: | The spittlebug Zulia entreriana was used in laboratory feeding tests te evaluate the degree of damage to the foliage and roots of Brachiaria decumbens and Brachiaria brizantha. Nymphal feeding on B. decumbens reduced the weight of foliage by an average ef 21% and the roots by 36%; adults reduced the foliage weight by 27% and the roots by 48%. Nymphs and adults feeding on the same plant reduced the foliage weight by an average of 36% and the roots by 50%. The degree of damage was ia direct proportion te insect density; the more insects per plant, the greater the amount of damage. In one test, significantly (P < 0.05) more new shoots were produced on B. decumbens plants that contained a high density of adults. The reduction in root weights due to insect feeding was about 1¹'² time greater than that for foliage. Brachiaria brizantha was less affected by insect feeding than Was B. decumbens. Weight differences between the control plants and the infested plants were less on B. brizantha and plant recovery, once insects were removed, was faster. |
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Effects of spitllebug feeding on forage and root production of Brachiaria decumbens and Brachiaria brizantha cv. Marandu (BRA-000019)Efeito da alimentação das cigarrinhas-das-pastagens na produção de forragem e raízes de Brachiaria decumbens e Brachiaria brizantha cv. Marandu (BRA-000019)Zulia entreriana, nimphal feeding, adults, insect, plant damageZulia entreriana, ninfas, adultos, insetos, alimentação, dano à pastagemThe spittlebug Zulia entreriana was used in laboratory feeding tests te evaluate the degree of damage to the foliage and roots of Brachiaria decumbens and Brachiaria brizantha. Nymphal feeding on B. decumbens reduced the weight of foliage by an average ef 21% and the roots by 36%; adults reduced the foliage weight by 27% and the roots by 48%. Nymphs and adults feeding on the same plant reduced the foliage weight by an average of 36% and the roots by 50%. The degree of damage was ia direct proportion te insect density; the more insects per plant, the greater the amount of damage. In one test, significantly (P < 0.05) more new shoots were produced on B. decumbens plants that contained a high density of adults. The reduction in root weights due to insect feeding was about 1¹'² time greater than that for foliage. Brachiaria brizantha was less affected by insect feeding than Was B. decumbens. Weight differences between the control plants and the infested plants were less on B. brizantha and plant recovery, once insects were removed, was faster.A espécie de ciganinha (Zulia entreriana) foi usada em teste de alimentação em laboratório com o objetivo de se avaliar o grau de dano na forragem e nas raízes de Brachiaria decumbens e Brachiaria brizantha. A alimentação das ninfas em B. decumbens reduziu o peso da forragem, em média, 21% e das raízes 36% os adultos reduziram o peso da forragem em 27% e o das raízes em 48%. As ninfas e os adultos que se alimentaram da mesma planta reduziram, em média, o peso da forragem em 36%, e o das raízes, em 50%, O grau de dano foi diretamente proporcional à densidade dos insetos; quanto maior foi o número de insetos por planta, maior o dano. Num teste, a produção de brotos foi signiticativamente maior (P < 0.05) em plantas de B. decumbens, que continham alta densidade de adultos. A redução no peso das raízes, em consequência da alimentação dos insetos, foi cerca de 12 vez maior que a verificada na forragem. A Brachiaria brizantha foi menos influenciada pela alimentação desses insetos que a B. decumbens. As diferenças de peso entre as plantas-testemunhas e as infestadas foram menores em B. brizantha, e a recuperação da planta, após a remoção dos insetos, foi mais rápida.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraHewitt, George B.2014-04-17info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/17201Pesquisa Agropecuaria Brasileira; v.24, n.3, mar. 1989; 307-314Pesquisa Agropecuária Brasileira; v.24, n.3, mar. 1989; 307-3141678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAenghttps://seer.sct.embrapa.br/index.php/pab/article/view/17201/11518info:eu-repo/semantics/openAccess2014-08-22T16:40:45Zoai:ojs.seer.sct.embrapa.br:article/17201Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-08-22T16:40:45Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Effects of spitllebug feeding on forage and root production of Brachiaria decumbens and Brachiaria brizantha cv. Marandu (BRA-000019) Efeito da alimentação das cigarrinhas-das-pastagens na produção de forragem e raízes de Brachiaria decumbens e Brachiaria brizantha cv. Marandu (BRA-000019) |
title |
Effects of spitllebug feeding on forage and root production of Brachiaria decumbens and Brachiaria brizantha cv. Marandu (BRA-000019) |
spellingShingle |
Effects of spitllebug feeding on forage and root production of Brachiaria decumbens and Brachiaria brizantha cv. Marandu (BRA-000019) Hewitt, George B. Zulia entreriana, nimphal feeding, adults, insect, plant damage Zulia entreriana, ninfas, adultos, insetos, alimentação, dano à pastagem |
title_short |
Effects of spitllebug feeding on forage and root production of Brachiaria decumbens and Brachiaria brizantha cv. Marandu (BRA-000019) |
title_full |
Effects of spitllebug feeding on forage and root production of Brachiaria decumbens and Brachiaria brizantha cv. Marandu (BRA-000019) |
title_fullStr |
Effects of spitllebug feeding on forage and root production of Brachiaria decumbens and Brachiaria brizantha cv. Marandu (BRA-000019) |
title_full_unstemmed |
Effects of spitllebug feeding on forage and root production of Brachiaria decumbens and Brachiaria brizantha cv. Marandu (BRA-000019) |
title_sort |
Effects of spitllebug feeding on forage and root production of Brachiaria decumbens and Brachiaria brizantha cv. Marandu (BRA-000019) |
author |
Hewitt, George B. |
author_facet |
Hewitt, George B. |
author_role |
author |
dc.contributor.none.fl_str_mv |
|
dc.contributor.author.fl_str_mv |
Hewitt, George B. |
dc.subject.por.fl_str_mv |
Zulia entreriana, nimphal feeding, adults, insect, plant damage Zulia entreriana, ninfas, adultos, insetos, alimentação, dano à pastagem |
topic |
Zulia entreriana, nimphal feeding, adults, insect, plant damage Zulia entreriana, ninfas, adultos, insetos, alimentação, dano à pastagem |
description |
The spittlebug Zulia entreriana was used in laboratory feeding tests te evaluate the degree of damage to the foliage and roots of Brachiaria decumbens and Brachiaria brizantha. Nymphal feeding on B. decumbens reduced the weight of foliage by an average ef 21% and the roots by 36%; adults reduced the foliage weight by 27% and the roots by 48%. Nymphs and adults feeding on the same plant reduced the foliage weight by an average of 36% and the roots by 50%. The degree of damage was ia direct proportion te insect density; the more insects per plant, the greater the amount of damage. In one test, significantly (P < 0.05) more new shoots were produced on B. decumbens plants that contained a high density of adults. The reduction in root weights due to insect feeding was about 1¹'² time greater than that for foliage. Brachiaria brizantha was less affected by insect feeding than Was B. decumbens. Weight differences between the control plants and the infested plants were less on B. brizantha and plant recovery, once insects were removed, was faster. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-04-17 |
dc.type.none.fl_str_mv |
|
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://seer.sct.embrapa.br/index.php/pab/article/view/17201 |
url |
https://seer.sct.embrapa.br/index.php/pab/article/view/17201 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://seer.sct.embrapa.br/index.php/pab/article/view/17201/11518 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira |
publisher.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira |
dc.source.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira; v.24, n.3, mar. 1989; 307-314 Pesquisa Agropecuária Brasileira; v.24, n.3, mar. 1989; 307-314 1678-3921 0100-104x reponame:Pesquisa Agropecuária Brasileira (Online) instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA |
instname_str |
Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
instacron_str |
EMBRAPA |
institution |
EMBRAPA |
reponame_str |
Pesquisa Agropecuária Brasileira (Online) |
collection |
Pesquisa Agropecuária Brasileira (Online) |
repository.name.fl_str_mv |
Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
repository.mail.fl_str_mv |
pab@sct.embrapa.br || sct.pab@embrapa.br |
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1793416665026789376 |