Root growth and distribution of capim-annoni-2 and natural grassland plants: competitive advantage of capim-annoni-2?
Autor(a) principal: | |
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Data de Publicação: | 2009 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Pesquisa Agropecuária Gaúcha (Online) |
Texto Completo: | http://revistapag.agricultura.rs.gov.br/ojs/index.php/revistapag/article/view/194 |
Resumo: | the invasive grass capim-annoni-2 (Eragrosfis plana ness) shows growth competitiveness in relation to na- tural grassland species, which can be related to a more extensive and deeper root system, leading to greater nutrient uptake and soil water access. the growth and soil distribution of roots of capim-annoni-2 and natural grassland species were evaluated in a grazed area in dom pedrito, rio grande do sul, brazil, by the monolith sampling method. the soil monoliths (4 dm3) with capim-annoni-2 tussocks (n=6) and natural grassland plants (n=6) were divided in 0-10, 10-20 and 20-40 cm deep layers. the above ground vegetation of the monoliths was also sampled. taking into account the whole soil monolith, the capim-annoni-2 root dry mass (42.90 g) was higher (p<0.05) than that of natural grassland species (31.95 g). this difference (p<0.05) was restricted to the 0-10 cm deep layer (36.82 g vs 26.25 g), and there was no difference (p>0.05) in the 10-20 cm (3.96 g vs 3.53 g) and 20-40 cm (2.13 g vs 2.16 g) deep layers. the above ground vegetation dry mass and p and K contents were higher for capim-annoni-2 than those for natural grassland species. the capim-annoni-2 may have a competitive advantage for uptaking nutrients localized in the more superficial layer of soil, but its root distribution do not promote greater access to nutrients or water localized deeper in the soil. |
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Root growth and distribution of capim-annoni-2 and natural grassland plants: competitive advantage of capim-annoni-2?Crescimento e distribuição de raízes de capim-annoni-2 e do campo nativo: vantagem competitiva do capim-annoni-2?Eragrosfis plana ness, invasive plant, native grasslands.Eragrosfis plana ness, planta invasora, pastagem natural.the invasive grass capim-annoni-2 (Eragrosfis plana ness) shows growth competitiveness in relation to na- tural grassland species, which can be related to a more extensive and deeper root system, leading to greater nutrient uptake and soil water access. the growth and soil distribution of roots of capim-annoni-2 and natural grassland species were evaluated in a grazed area in dom pedrito, rio grande do sul, brazil, by the monolith sampling method. the soil monoliths (4 dm3) with capim-annoni-2 tussocks (n=6) and natural grassland plants (n=6) were divided in 0-10, 10-20 and 20-40 cm deep layers. the above ground vegetation of the monoliths was also sampled. taking into account the whole soil monolith, the capim-annoni-2 root dry mass (42.90 g) was higher (p<0.05) than that of natural grassland species (31.95 g). this difference (p<0.05) was restricted to the 0-10 cm deep layer (36.82 g vs 26.25 g), and there was no difference (p>0.05) in the 10-20 cm (3.96 g vs 3.53 g) and 20-40 cm (2.13 g vs 2.16 g) deep layers. the above ground vegetation dry mass and p and K contents were higher for capim-annoni-2 than those for natural grassland species. the capim-annoni-2 may have a competitive advantage for uptaking nutrients localized in the more superficial layer of soil, but its root distribution do not promote greater access to nutrients or water localized deeper in the soil. A gramínea invasora capim-annoni-2 (Eragrosfis plana ness) apresenta competitividade de crescimento em relação ao campo nativo, o que pode estar relacionado a um sistema radical mais extenso e profundo do capim-annoni-2, proporcionando maior absorção de nutrientes e acesso à umidade do solo. o crescimento e a distribuição no solo de raízes de capim-annoni-2 e de espécies de campo nativo foram avaliados em área sob pastejo em dom pedrito, rs, com amostragem através de monólitos coletados em touceiras de capim-annoni-2 (n=6) e em plantas de campo nativo (n=6). os monólitos de solo (4 dm3) foram divididos, resultando em amostras correspondentes às camadas de 0-10, 10-20 e 20- 40 cm de profundidade. também foi amostrada a parte aérea da vegetação dos monólitos. a massa seca total de raízes do capim-annoni-2 (42,90 g) foi maior (p<0,05) do que a das espécies de campo nativo (31,95 g), considerando todo o monólito. essa diferença (p<0,05) esteve restrita à profundidade de 0-10 cm (36,82 g vs 26,25 g), não havendo diferença (p>0,05) nas profundidades de 10-20 cm (3,96 g vs 3,53 g) e 20-40 cm (2,13 vs 2,16). a massa seca da parte aérea da vegetação e o conteúdo de p e K foram maiores para o capim-annoni-2 do que para o campo nativo. o capim-annoni-2 pode ter vantagem competitiva na absorção de nutrientes presentes na camada superficial do solo, mas a sua distribuição de raízes não proporciona maior acesso a nutrientes ou a umidade localizados mais profundamente no solo. Departamento de Diagnóstico e Pesquisa Agropecuária. Secretaria de Agricultura, Pecuária e Desenvolvimento Rural2009-08-20info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://revistapag.agricultura.rs.gov.br/ojs/index.php/revistapag/article/view/194Pesquisa Agropecuária Gaúcha; Vol 15 No 1 (2009): PESQ. AGROP. GAÚCHA; 7-12Pesquisa Agropecuária Gaúcha; v. 15 n. 1 (2009): PESQ. AGROP. GAÚCHA; 7-122595-76860104-9070reponame:Pesquisa Agropecuária Gaúcha (Online)instname:Secretaria de Agricultura, Pecuária e Desenvolvimento Rural do Rio Grande do Sulinstacron:SEAPDRporhttp://revistapag.agricultura.rs.gov.br/ojs/index.php/revistapag/article/view/194/165Abichequer, André Dabdab Bicca, Ana Maria Oliveira Medeiros, Corália Maria Oliveira Saraiva, Karla Médici info:eu-repo/semantics/openAccess2024-04-22T12:40:34Zoai:ojs.revistapag.agricultura.rs.gov.br:article/194Revistahttp://revistapag.agricultura.rs.gov.br/ojs/index.php/revistapagPUBhttp://revistapag.agricultura.rs.gov.br/ojs/index.php/revistapag/oaipag@agricultura.rs.gov.br||2595-76860104-9070opendoar:2024-04-22T12:40:34Pesquisa Agropecuária Gaúcha (Online) - Secretaria de Agricultura, Pecuária e Desenvolvimento Rural do Rio Grande do Sulfalse |
dc.title.none.fl_str_mv |
Root growth and distribution of capim-annoni-2 and natural grassland plants: competitive advantage of capim-annoni-2? Crescimento e distribuição de raízes de capim-annoni-2 e do campo nativo: vantagem competitiva do capim-annoni-2? |
title |
Root growth and distribution of capim-annoni-2 and natural grassland plants: competitive advantage of capim-annoni-2? |
spellingShingle |
Root growth and distribution of capim-annoni-2 and natural grassland plants: competitive advantage of capim-annoni-2? Abichequer, André Dabdab Eragrosfis plana ness, invasive plant, native grasslands. Eragrosfis plana ness, planta invasora, pastagem natural. |
title_short |
Root growth and distribution of capim-annoni-2 and natural grassland plants: competitive advantage of capim-annoni-2? |
title_full |
Root growth and distribution of capim-annoni-2 and natural grassland plants: competitive advantage of capim-annoni-2? |
title_fullStr |
Root growth and distribution of capim-annoni-2 and natural grassland plants: competitive advantage of capim-annoni-2? |
title_full_unstemmed |
Root growth and distribution of capim-annoni-2 and natural grassland plants: competitive advantage of capim-annoni-2? |
title_sort |
Root growth and distribution of capim-annoni-2 and natural grassland plants: competitive advantage of capim-annoni-2? |
author |
Abichequer, André Dabdab |
author_facet |
Abichequer, André Dabdab Bicca, Ana Maria Oliveira Medeiros, Corália Maria Oliveira Saraiva, Karla Médici |
author_role |
author |
author2 |
Bicca, Ana Maria Oliveira Medeiros, Corália Maria Oliveira Saraiva, Karla Médici |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Abichequer, André Dabdab Bicca, Ana Maria Oliveira Medeiros, Corália Maria Oliveira Saraiva, Karla Médici |
dc.subject.por.fl_str_mv |
Eragrosfis plana ness, invasive plant, native grasslands. Eragrosfis plana ness, planta invasora, pastagem natural. |
topic |
Eragrosfis plana ness, invasive plant, native grasslands. Eragrosfis plana ness, planta invasora, pastagem natural. |
description |
the invasive grass capim-annoni-2 (Eragrosfis plana ness) shows growth competitiveness in relation to na- tural grassland species, which can be related to a more extensive and deeper root system, leading to greater nutrient uptake and soil water access. the growth and soil distribution of roots of capim-annoni-2 and natural grassland species were evaluated in a grazed area in dom pedrito, rio grande do sul, brazil, by the monolith sampling method. the soil monoliths (4 dm3) with capim-annoni-2 tussocks (n=6) and natural grassland plants (n=6) were divided in 0-10, 10-20 and 20-40 cm deep layers. the above ground vegetation of the monoliths was also sampled. taking into account the whole soil monolith, the capim-annoni-2 root dry mass (42.90 g) was higher (p<0.05) than that of natural grassland species (31.95 g). this difference (p<0.05) was restricted to the 0-10 cm deep layer (36.82 g vs 26.25 g), and there was no difference (p>0.05) in the 10-20 cm (3.96 g vs 3.53 g) and 20-40 cm (2.13 g vs 2.16 g) deep layers. the above ground vegetation dry mass and p and K contents were higher for capim-annoni-2 than those for natural grassland species. the capim-annoni-2 may have a competitive advantage for uptaking nutrients localized in the more superficial layer of soil, but its root distribution do not promote greater access to nutrients or water localized deeper in the soil. |
publishDate |
2009 |
dc.date.none.fl_str_mv |
2009-08-20 |
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 |
http://revistapag.agricultura.rs.gov.br/ojs/index.php/revistapag/article/view/194 |
url |
http://revistapag.agricultura.rs.gov.br/ojs/index.php/revistapag/article/view/194 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
http://revistapag.agricultura.rs.gov.br/ojs/index.php/revistapag/article/view/194/165 |
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 |
Departamento de Diagnóstico e Pesquisa Agropecuária. Secretaria de Agricultura, Pecuária e Desenvolvimento Rural |
publisher.none.fl_str_mv |
Departamento de Diagnóstico e Pesquisa Agropecuária. Secretaria de Agricultura, Pecuária e Desenvolvimento Rural |
dc.source.none.fl_str_mv |
Pesquisa Agropecuária Gaúcha; Vol 15 No 1 (2009): PESQ. AGROP. GAÚCHA; 7-12 Pesquisa Agropecuária Gaúcha; v. 15 n. 1 (2009): PESQ. AGROP. GAÚCHA; 7-12 2595-7686 0104-9070 reponame:Pesquisa Agropecuária Gaúcha (Online) instname:Secretaria de Agricultura, Pecuária e Desenvolvimento Rural do Rio Grande do Sul instacron:SEAPDR |
instname_str |
Secretaria de Agricultura, Pecuária e Desenvolvimento Rural do Rio Grande do Sul |
instacron_str |
SEAPDR |
institution |
SEAPDR |
reponame_str |
Pesquisa Agropecuária Gaúcha (Online) |
collection |
Pesquisa Agropecuária Gaúcha (Online) |
repository.name.fl_str_mv |
Pesquisa Agropecuária Gaúcha (Online) - Secretaria de Agricultura, Pecuária e Desenvolvimento Rural do Rio Grande do Sul |
repository.mail.fl_str_mv |
pag@agricultura.rs.gov.br|| |
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1797068772085858304 |