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Registro Completo |
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Biblioteca(s): |
Embrapa Gado de Leite. |
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Data corrente: |
28/11/2014 |
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Data da última atualização: |
15/08/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
ALENCAR, C. A. B.; CUNHA, F. F. da; OLIVEIRA, R. A. de; CÓSER, A. C.; MARTINS, C. E. |
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Afiliação: |
CARLOS AUGUSTO BRASILEIRO DE ALENCAR, IBIO - MG; FERNANDO FRANÇA DA CUNHA, UFMS; RUBENS ALVES DE OLIVEIRA, UFV; ANTONIO CARLOS CÓSER, Pesquisador aposentado - Embrapa Gado de Leite; CARLOS EUGENIO MARTINS, CNPGL. |
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Título: |
Effect of irrigation and annual seasons on the chemical composition and digestibility of grasses under grazing. |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
Engenharia na Agricultura, v. 22 n. 4, p. 331-340, 2014. |
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DOI: |
https://doi.org/10.13083/reveng.v22i4.457 |
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Idioma: |
Inglês |
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Conteúdo: |
ABSTRACT - The aim of the study was to evaluate the chemical composition and in vitro dry matter digestibility (IVDMD) of six grasses subjected to different irrigation depths and seasons. The experiment was conducted in a completely randomized arrangement with two replications in a split-split plot design. The treatments included plots with six grasses (Xaraés, Mombaça, Tanzania, Pioneiro, Marandu and Estrela), six irrigation depths for the split-plots (0%, 18%, 45%, 77%, 100% and 120% of the reference value provided by the tensiometer), and two seasons as the split-split plots (autumn/winter and spring/summer). A line source sprinkler system was used for application of the irrigation depths. Crude protein (CP), neutral detergent fiber (NDF) and IVDMD were evaluated and obtained in accordance with literature. The factors studied affect the CP. However in the autumn/winter season the grasses presented differences in the NDF content, where Estrela presented the largest and Pioneiro the smallest NDF contents. The season and irrigation depths did not affect the NDF. Estrela grass presented the smallest IDVMD and the autumn/winter season resulted in greater digestibility for the grasses Xaraés, Mombaça and Tanzania only. The irrigation depths had an effect on some combinations of grasses and seasons. RESUMO - Objetivou-se com este estudo avaliar a composição bromatológica e a digestibilidade in vitro da matéria seca (DIVMS) em seis capins manejados por pastejo sob efeito de diferentes lâminas de irrigação e estações do ano. O experimento foi conduzido em esquema de parcelas subsubdivididas, tendo nas parcelas seis gramíneas (Xaraés, Mombaça, Tanzânia, Pioneiro, Marandu e Estrela), nas subparcelas seis lâminas de irrigação (0, 18, 45, 77, 100 e 120% da referência dada pelo tensiômetro) e nas subsubparcelas as estações (outono/inverno e primavera/verão) no delineamento inteiramente casualizado, com duas repetições. Para diferenciar a aplicação das lâminas de irrigação, utilizou-se o sistema por aspersão em linha. Foram avaliados os teores de proteína bruta (PB), fibra em detergente neutro (FDN) e a DIVMS e suas obtenções foram de acordo com a literatura. Os fatores estudados afetaram o teor de PB. Apenas na estação outono/inverno os capins apresentaram diferença no teor de FDN, sendo a Estrela a maior e Pioneiro os menores teores encontrados. As estações do ano e lâminas de irrigação não afetaram a FDN. O capim-estrela apresentou menor DIVMS e a estação outono/inverno proporcionou maior digestibilidade apenas para os capins Xaraés, Mombaça e Tanzânia. As lâminas de irrigação conferiram efeito em algumas combinações de capim e estação anual. MenosABSTRACT - The aim of the study was to evaluate the chemical composition and in vitro dry matter digestibility (IVDMD) of six grasses subjected to different irrigation depths and seasons. The experiment was conducted in a completely randomized arrangement with two replications in a split-split plot design. The treatments included plots with six grasses (Xaraés, Mombaça, Tanzania, Pioneiro, Marandu and Estrela), six irrigation depths for the split-plots (0%, 18%, 45%, 77%, 100% and 120% of the reference value provided by the tensiometer), and two seasons as the split-split plots (autumn/winter and spring/summer). A line source sprinkler system was used for application of the irrigation depths. Crude protein (CP), neutral detergent fiber (NDF) and IVDMD were evaluated and obtained in accordance with literature. The factors studied affect the CP. However in the autumn/winter season the grasses presented differences in the NDF content, where Estrela presented the largest and Pioneiro the smallest NDF contents. The season and irrigation depths did not affect the NDF. Estrela grass presented the smallest IDVMD and the autumn/winter season resulted in greater digestibility for the grasses Xaraés, Mombaça and Tanzania only. The irrigation depths had an effect on some combinations of grasses and seasons. RESUMO - Objetivou-se com este estudo avaliar a composição bromatológica e a digestibilidade in vitro da matéria seca (DIVMS) em seis capins manejados por pastejo sob efeito de difer... Mostrar Tudo |
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Palavras-Chave: |
Line source sprinkler system. |
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Thesaurus Nal: |
crude protein; neutral detergent fiber. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/112585/1/Artigo-Caca-Reveng-Effect-457-2515-1-PB.pdf
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Marc: |
LEADER 03462naa a2200217 a 4500
001 2001098
005 2022-08-15
008 2014 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.13083/reveng.v22i4.457$2DOI
100 1 $aALENCAR, C. A. B.
245 $aEffect of irrigation and annual seasons on the chemical composition and digestibility of grasses under grazing.$h[electronic resource]
260 $c2014
520 $aABSTRACT - The aim of the study was to evaluate the chemical composition and in vitro dry matter digestibility (IVDMD) of six grasses subjected to different irrigation depths and seasons. The experiment was conducted in a completely randomized arrangement with two replications in a split-split plot design. The treatments included plots with six grasses (Xaraés, Mombaça, Tanzania, Pioneiro, Marandu and Estrela), six irrigation depths for the split-plots (0%, 18%, 45%, 77%, 100% and 120% of the reference value provided by the tensiometer), and two seasons as the split-split plots (autumn/winter and spring/summer). A line source sprinkler system was used for application of the irrigation depths. Crude protein (CP), neutral detergent fiber (NDF) and IVDMD were evaluated and obtained in accordance with literature. The factors studied affect the CP. However in the autumn/winter season the grasses presented differences in the NDF content, where Estrela presented the largest and Pioneiro the smallest NDF contents. The season and irrigation depths did not affect the NDF. Estrela grass presented the smallest IDVMD and the autumn/winter season resulted in greater digestibility for the grasses Xaraés, Mombaça and Tanzania only. The irrigation depths had an effect on some combinations of grasses and seasons. RESUMO - Objetivou-se com este estudo avaliar a composição bromatológica e a digestibilidade in vitro da matéria seca (DIVMS) em seis capins manejados por pastejo sob efeito de diferentes lâminas de irrigação e estações do ano. O experimento foi conduzido em esquema de parcelas subsubdivididas, tendo nas parcelas seis gramíneas (Xaraés, Mombaça, Tanzânia, Pioneiro, Marandu e Estrela), nas subparcelas seis lâminas de irrigação (0, 18, 45, 77, 100 e 120% da referência dada pelo tensiômetro) e nas subsubparcelas as estações (outono/inverno e primavera/verão) no delineamento inteiramente casualizado, com duas repetições. Para diferenciar a aplicação das lâminas de irrigação, utilizou-se o sistema por aspersão em linha. Foram avaliados os teores de proteína bruta (PB), fibra em detergente neutro (FDN) e a DIVMS e suas obtenções foram de acordo com a literatura. Os fatores estudados afetaram o teor de PB. Apenas na estação outono/inverno os capins apresentaram diferença no teor de FDN, sendo a Estrela a maior e Pioneiro os menores teores encontrados. As estações do ano e lâminas de irrigação não afetaram a FDN. O capim-estrela apresentou menor DIVMS e a estação outono/inverno proporcionou maior digestibilidade apenas para os capins Xaraés, Mombaça e Tanzânia. As lâminas de irrigação conferiram efeito em algumas combinações de capim e estação anual.
650 $acrude protein
650 $aneutral detergent fiber
653 $aLine source sprinkler system
700 1 $aCUNHA, F. F. da
700 1 $aOLIVEIRA, R. A. de
700 1 $aCÓSER, A. C.
700 1 $aMARTINS, C. E.
773 $tEngenharia na Agricultura$gv. 22 n. 4, p. 331-340, 2014.
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Registro original: |
Embrapa Gado de Leite (CNPGL) |
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Registro Completo
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Biblioteca(s): |
Embrapa Florestas; Embrapa Unidades Centrais. |
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Data corrente: |
24/08/2012 |
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Data da última atualização: |
20/02/2015 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
NICKELE, M. A.; REIS FILHO, W.; OLIVEIRA, E. B. de; IEDE, E. T.; CALDATO, N.; STRAPASON, P. |
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Afiliação: |
MARIANE APARECIDA NICKELE, UFPR; WILSON REIS FILHO, EMBRAPA FLORESTAS; EDILSON BATISTA DE OLIVEIRA, CNPF; EDSON TADEU IEDE, CNPF; NÁDIA CALDATO, Faculdade de Ciências Agronômicas de Botucatu; PRISCILA STRAPASON, UFPR. |
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Título: |
Leaf-cutting ant attack in initial pine plantations and growth of defoliated plants. |
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Ano de publicação: |
2012 |
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Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, v. 47, n. 7, p. 892-899, jul. 2012. |
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Idioma: |
Inglês |
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Conteúdo: |
The objective of this work was to evaluate the natural attack by Acromyrmex crassispinus in initial Pinus taeda plantations without control measures against ants, as well as the effect of defoliation in seedlings of P. taeda. Evaluations of the attack of leaf?cutting ants on P. taeda plantations were done monthly in the first six months, then 9 and 12 months after planting. The percentages of plants that were naturally attacked by ants were registered. The effect of defoliation was evaluated by artificial defoliation, simulating the natural patterns of attack by A. crassispinus on P. taeda seedlings. The natural attack of A. crassispinus was greater during the first months after planting, being more intense in the first 30 days. Artificial defoliation indicated that there were no significant losses in diameter and height in plants with less than 75% defoliation. However, there were significant losses in diameter and height in plants with 100% defoliation, independently of the cut of the apical meristem, and also plant death. The control of leaf?cutting ants in P. taeda plantings, in which A. crassispinus is the most frequent leaf?cutting ant, should be intense only at the beginning of planting, since the most severe attacks occur during this time. |
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Palavras-Chave: |
Acromyrmex crassispinus; Forest pest; Praga florestal. |
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Thesagro: |
Desfolha artificial; Pinus Taeda. |
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Thesaurus NAL: |
Defoliation. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/64894/1/2012-Edilson-PAB-Ataque.pdf
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/84991/1/Leaf8209cutting-ant-attack-in-initial.pdf
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Marc: |
LEADER 02001naa a2200253 a 4500
001 1932127
005 2015-02-20
008 2012 bl uuuu u00u1 u #d
100 1 $aNICKELE, M. A.
245 $aLeaf-cutting ant attack in initial pine plantations and growth of defoliated plants.
260 $c2012
520 $aThe objective of this work was to evaluate the natural attack by Acromyrmex crassispinus in initial Pinus taeda plantations without control measures against ants, as well as the effect of defoliation in seedlings of P. taeda. Evaluations of the attack of leaf?cutting ants on P. taeda plantations were done monthly in the first six months, then 9 and 12 months after planting. The percentages of plants that were naturally attacked by ants were registered. The effect of defoliation was evaluated by artificial defoliation, simulating the natural patterns of attack by A. crassispinus on P. taeda seedlings. The natural attack of A. crassispinus was greater during the first months after planting, being more intense in the first 30 days. Artificial defoliation indicated that there were no significant losses in diameter and height in plants with less than 75% defoliation. However, there were significant losses in diameter and height in plants with 100% defoliation, independently of the cut of the apical meristem, and also plant death. The control of leaf?cutting ants in P. taeda plantings, in which A. crassispinus is the most frequent leaf?cutting ant, should be intense only at the beginning of planting, since the most severe attacks occur during this time.
650 $aDefoliation
650 $aDesfolha artificial
650 $aPinus Taeda
653 $aAcromyrmex crassispinus
653 $aForest pest
653 $aPraga florestal
700 1 $aREIS FILHO, W.
700 1 $aOLIVEIRA, E. B. de
700 1 $aIEDE, E. T.
700 1 $aCALDATO, N.
700 1 $aSTRAPASON, P.
773 $tPesquisa Agropecuária Brasileira, Brasília$gv. 47, n. 7, p. 892-899, jul. 2012.
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Registro original: |
Embrapa Florestas (CNPF) |
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