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Registro Completo |
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Biblioteca(s): |
Embrapa Rondônia. |
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Data corrente: |
20/01/2009 |
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Data da última atualização: |
17/04/2009 |
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Tipo da produção científica: |
Artigo em Anais de Congresso / Nota Técnica |
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Autoria: |
BROGIN, R. L.; ALVES, J. C.; RIBEIRO, I. A.; GODINHO, V. de P. C.; UTUMI, M. M.; REIS, F. L. F.; NUNES JÚNIOR, J. |
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Afiliação: |
Rodrigo Luis Brogin, Embrapa Soja; José Claudio Alves, Embrapa Rondônia; Ildeu Alves Ribeiro, Embrapa Rondônia; Vicente de Paulo Campos Godinho, Embrapa Rondônia; Marley Marico Utumi, Embrapa Rondônia; Fagner Leite Ferreira Reis, Embrapa Soja; José Nunes Junior, CTPA. |
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Título: |
Avaliação de cultivares de soja no cerrado de Rondônia nas safras 2006/07 e 2007/08. |
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Ano de publicação: |
2008 |
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Fonte/Imprenta: |
In: REUNIÃO DE PESQUISA DE SOJA DA REGIÃO CENTRAL DO BRASIL, 30., 2008, Rio Verde. Resumos... Londrina: Embrapa Soja, 2008. |
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Páginas: |
p. 267-268. |
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Idioma: |
Português |
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Notas: |
Meta 2008.
Organizado por Odilon Ferreira Saraiva, César de Castro, Regina Maria Villas Bôas de Campos Leite, Fábio Alvares de Oliveira. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 00796naa a2200205 a 4500
001 1709422
005 2009-04-17
008 2008 bl --- 0-- u #d
100 1 $aBROGIN, R. L.
245 $aAvaliação de cultivares de soja no cerrado de Rondônia nas safras 2006/07 e 2007/08.
260 $c2008
300 $ap. 267-268.
500 $aMeta 2008. Organizado por Odilon Ferreira Saraiva, César de Castro, Regina Maria Villas Bôas de Campos Leite, Fábio Alvares de Oliveira.
700 1 $aALVES, J. C.
700 1 $aRIBEIRO, I. A.
700 1 $aGODINHO, V. de P. C.
700 1 $aUTUMI, M. M.
700 1 $aREIS, F. L. F.
700 1 $aNUNES JÚNIOR, J.
773 $tIn: REUNIÃO DE PESQUISA DE SOJA DA REGIÃO CENTRAL DO BRASIL, 30., 2008, Rio Verde. Resumos... Londrina: Embrapa Soja, 2008.
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Registro original: |
Embrapa Rondônia (CPAF-RO) |
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Registro Completo
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Biblioteca(s): |
Embrapa Pecuária Sul. |
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Data corrente: |
25/11/2011 |
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Data da última atualização: |
15/02/2012 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
LACA, E.; GENRO, T. C. M.; BREMM, C.; GENRO, J.; SCHRIEFER, C. |
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Afiliação: |
EMILIO LACA, University of California, Davis, California, United States; TERESA CRISTINA MORAES GENRO, CPPSUL; Carolina Bremm, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil; JAIRO GENRO, Universidade Federal de Santa Maria, Santa Maria, Brazil; Craig Schriefer, University of California, Davis, California, United States. |
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Título: |
Patch size controls selectivity of sheep grazing grass-clover grasslands. |
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Ano de publicação: |
2011 |
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Fonte/Imprenta: |
In: ANNUAL MEETING OF THE SOCIETY FOR RANGE MANAGEMENT, 64., 2011, Billings, MT. Abstracts... [Wheat Ridge: Society for Range Management], 2011. p. 392. |
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Idioma: |
Inglês |
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Conteúdo: |
The trophic interaction between ruminants and grasslands is a fundamental process that shapes landscapes and modulates ecosystem function and productivity. Selective grazing can structure plant communities and thus, the control of selectivity can be used for ecosystems management. We hypothesized that selectivity for clover by sheep can be modulated by changing the degree of interspersion between grass and clover patches. We built 34 x 17 m pastures and modified their vegetation by seeding subclover and using selective broadleaf and grass herbicides to create either four 8.5 x 17 m rectangles or seventeen 2 x 17 m bands dominated by grass or clover. Pastures were grazed in the spring with either four sheep for 12 days or 12 sheep during four days. We measured herbage mass before and after grazing, and observed activity (grazing or other) and location (grass or clover) from 6 AM to 8 PM and determined selectivity as the ratio of total sheep-hours grazing clover divided by sheep-hours grazing grass. Sheep grazed more time in clover than in grass, particularly in the large patches than in the bands (P=0.025, 2.9 vs. 1.4). We did not detect a significant difference due to number of sheep or interaction, but the test had low power due to small sample size. Herbage mass changes also reflected a strong preference for clover, particularly in large patches. These results provide further evidence to the literature that indicates that vegetation pattern can be used as a management factor to modulate plant-animal interactions. MenosThe trophic interaction between ruminants and grasslands is a fundamental process that shapes landscapes and modulates ecosystem function and productivity. Selective grazing can structure plant communities and thus, the control of selectivity can be used for ecosystems management. We hypothesized that selectivity for clover by sheep can be modulated by changing the degree of interspersion between grass and clover patches. We built 34 x 17 m pastures and modified their vegetation by seeding subclover and using selective broadleaf and grass herbicides to create either four 8.5 x 17 m rectangles or seventeen 2 x 17 m bands dominated by grass or clover. Pastures were grazed in the spring with either four sheep for 12 days or 12 sheep during four days. We measured herbage mass before and after grazing, and observed activity (grazing or other) and location (grass or clover) from 6 AM to 8 PM and determined selectivity as the ratio of total sheep-hours grazing clover divided by sheep-hours grazing grass. Sheep grazed more time in clover than in grass, particularly in the large patches than in the bands (P=0.025, 2.9 vs. 1.4). We did not detect a significant difference due to number of sheep or interaction, but the test had low power due to small sample size. Herbage mass changes also reflected a strong preference for clover, particularly in large patches. These results provide further evidence to the literature that indicates that vegetation pattern can be used as a management fact... Mostrar Tudo |
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Thesagro: |
Ovelha; Pastagem; Trevo. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/48052/1/SRM-2011-abstracts-title-index.pdf
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Marc: |
LEADER 02176nam a2200193 a 4500
001 1907385
005 2012-02-15
008 2011 bl uuuu u00u1 u #d
100 1 $aLACA, E.
245 $aPatch size controls selectivity of sheep grazing grass-clover grasslands.$h[electronic resource]
260 $aIn: ANNUAL MEETING OF THE SOCIETY FOR RANGE MANAGEMENT, 64., 2011, Billings, MT. Abstracts... [Wheat Ridge: Society for Range Management], 2011. p. 392.$c2011
520 $aThe trophic interaction between ruminants and grasslands is a fundamental process that shapes landscapes and modulates ecosystem function and productivity. Selective grazing can structure plant communities and thus, the control of selectivity can be used for ecosystems management. We hypothesized that selectivity for clover by sheep can be modulated by changing the degree of interspersion between grass and clover patches. We built 34 x 17 m pastures and modified their vegetation by seeding subclover and using selective broadleaf and grass herbicides to create either four 8.5 x 17 m rectangles or seventeen 2 x 17 m bands dominated by grass or clover. Pastures were grazed in the spring with either four sheep for 12 days or 12 sheep during four days. We measured herbage mass before and after grazing, and observed activity (grazing or other) and location (grass or clover) from 6 AM to 8 PM and determined selectivity as the ratio of total sheep-hours grazing clover divided by sheep-hours grazing grass. Sheep grazed more time in clover than in grass, particularly in the large patches than in the bands (P=0.025, 2.9 vs. 1.4). We did not detect a significant difference due to number of sheep or interaction, but the test had low power due to small sample size. Herbage mass changes also reflected a strong preference for clover, particularly in large patches. These results provide further evidence to the literature that indicates that vegetation pattern can be used as a management factor to modulate plant-animal interactions.
650 $aOvelha
650 $aPastagem
650 $aTrevo
700 1 $aGENRO, T. C. M.
700 1 $aBREMM, C.
700 1 $aGENRO, J.
700 1 $aSCHRIEFER, C.
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Registro original: |
Embrapa Pecuária Sul (CPPSUL) |
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