Forage productivity and chemical composition of Panicum maximum cv. Mombaça under defoliations intensities and frequencies
| Autor(a) principal: | |
|---|---|
| Data de Publicação: | 2021 |
| Outros Autores: | , , , , |
| Tipo de documento: | Artigo |
| Idioma: | eng |
| Título da fonte: | Research, Society and Development |
| Texto Completo: | https://rsdjournal.org/index.php/rsd/article/view/17494 |
Resumo: | The effects of defoliation frequency (28, 35, 42 and 49 days) and defoliation intensity (30, 40 and 50 cm above the ground) on green dry matter (GDM) yield, and chemical composition of Panicum maximum cv. Mombaça were evaluated under natural field conditions at the Roraima´s savannas. Defoliation regimes affect productivity and chemical composition of grass forage. The decrease in the pasture defoliation frequency and intensity improved the accumulation of forage, however it reduces the tissue concentrations of N, P, Ca, Mg and K. Irrespective of defoliation frequencies, the highest levels of N (23.99 g kg-1), P (2.12 g kg-1), Ca (4.22 g kg-1), Mg (2.87 g kg-1) and K (21.45 g kg-1) were recorded for the defoliation intensity at 40 cm above the ground. The use of defoliation frequency around 42 days and defoliation intensity of 42,9 cm above the ground can be considered adequate for the management of pastures of P. maximum cv. Mombaça, in order to provides higher forage productivity and quality, regrowth vigor, larger efficiency of forage utilization, greater tissue renewal and canopy structure more favorable to grazing. |
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Forage productivity and chemical composition of Panicum maximum cv. Mombaça under defoliations intensities and frequencies Productividad y composición química del forraje de Panicum maximum cv. Mombaça bajo intensidades y frecuencias de defoliaciónProdutividade e composição química da forragem de Panicum maximum cv. Mombaça sob intensidades e frequências de desfolhaçãoCalcioMateria seca verdeMagnesioNitrógenoFósforoPotasio.CálcioMatéria seca verdeMagnésioNitrogênioFósforoPotássio. CalciumGreen dry matterMagnesiumNitrogenPhosphorusPotassium. The effects of defoliation frequency (28, 35, 42 and 49 days) and defoliation intensity (30, 40 and 50 cm above the ground) on green dry matter (GDM) yield, and chemical composition of Panicum maximum cv. Mombaça were evaluated under natural field conditions at the Roraima´s savannas. Defoliation regimes affect productivity and chemical composition of grass forage. The decrease in the pasture defoliation frequency and intensity improved the accumulation of forage, however it reduces the tissue concentrations of N, P, Ca, Mg and K. Irrespective of defoliation frequencies, the highest levels of N (23.99 g kg-1), P (2.12 g kg-1), Ca (4.22 g kg-1), Mg (2.87 g kg-1) and K (21.45 g kg-1) were recorded for the defoliation intensity at 40 cm above the ground. The use of defoliation frequency around 42 days and defoliation intensity of 42,9 cm above the ground can be considered adequate for the management of pastures of P. maximum cv. Mombaça, in order to provides higher forage productivity and quality, regrowth vigor, larger efficiency of forage utilization, greater tissue renewal and canopy structure more favorable to grazing.El efecto de la frecuencia de defoliación (28, 35, 42 y 49 días) y la intensidad de defoliación (30, 40 y 50 cm por encima del suelo) sobre el rendimiento de forraje y la composición química de Panicum maximum cv. Mombaça se evaluó en condiciones de campo en las sabanas de Roraima. Los regímenes de defoliación afectaron la productividad y la composición química del forraje de la gramínea. La reducción en la frecuencia e intensidad de la defoliación resultó en mayores rendimientos de materia seca verde, sin embargo, implicó disminuciones significativas en los niveles de nitrógeno (N), fósforo (P), calcio (Ca), magnesio (Mg) y potasio (K). Independientemente de las frecuencias de defoliación, las concentraciones más altas de N (23,99 g kg-1), P (2,12 g kg-1), Ca (4,22 g kg-1), Mg (2,87 g kg-1) y K (21,45 g kg-1) en el forraje se registraron con cortes a 40 cm por encima del suelo. Pastizales de P. maximum cv. Mombaça manejados bajo una frecuencia de defoliación alrededor de 42 días y una intensidad de defoliación de 42,9 cm sobre el suelo proporcionan mayor productividad y calidad del forraje, mayor eficiencia de su uso, mayor renovación de tejidos y estructura del dosel más favorable al pastoreo.O efeito da frequência de desfolhação (28, 35, 42 e 49 dias) e intensidade de desfolhação (30, 40 e 50 cm acima do solo) sobre o rendimento e composição química da forragem de Panicum maximum cv. Mombaça foi avaliado em condições de campo nos cerrados de Roraima. Os regimes de desfolhação afetaram a produtividade e a composição química da forragem da gramínea. A redução na frequência e intensidade de desfolhação resultou em maiores rendimentos de matéria seca verde, contudo, implicou em decréscimos significativos dos teores de nitrogênio (N), fósforo (P), cálcio (Ca), magnésio (Mg) e potássio (K). Independentemente das frequências de desfolhação, as maiores concentrações de N (23,99 g kg-1), P (2,12 g kg-1), Ca (4,22 g kg-1), Mg (2,87 g kg-1) e K (21,45 g kg-1) na forragem foram registradas com cortes a 40 cm acima do solo. Pastagens de P. maximum cv. Mombaça manejadas sob frequência de desfolhação em torno de 42 dias e intensidade de desfolhação de 42,9 cm acima do solo proporcionam maior produtividade e qualidade da forragem, maior eficiência de sua utilização, maior renovação de tecidos e estrutura do dossel mais favorável ao pastejo.Research, Society and Development2021-07-15info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://rsdjournal.org/index.php/rsd/article/view/1749410.33448/rsd-v10i8.17494Research, Society and Development; Vol. 10 No. 8; e42910817494Research, Society and Development; Vol. 10 Núm. 8; e42910817494Research, Society and Development; v. 10 n. 8; e429108174942525-3409reponame:Research, Society and Developmentinstname:Universidade Federal de Itajubá (UNIFEI)instacron:UNIFEIenghttps://rsdjournal.org/index.php/rsd/article/view/17494/15649Copyright (c) 2021 Newton de Lucena Costa; Liana Jank; João Avelar Magalhães; Amaury Burlamaqui Bendahan; Braz Henrique Nunes Rodrigues; Francisco José de Seixas Santoshttps://creativecommons.org/licenses/by/4.0info:eu-repo/semantics/openAccessCosta, Newton de LucenaJank, Liana Magalhães, João AvelarBendahan, Amaury BurlamaquiRodrigues, Braz Henrique Nunes Santos, Francisco José de Seixas 2021-08-21T18:46:59Zoai:ojs.pkp.sfu.ca:article/17494Revistahttps://rsdjournal.org/index.php/rsd/indexPUBhttps://rsdjournal.org/index.php/rsd/oairsd.articles@gmail.com2525-34092525-3409opendoar:2024-01-17T09:37:49.051643Research, Society and Development - Universidade Federal de Itajubá (UNIFEI)false |
| dc.title.none.fl_str_mv |
Forage productivity and chemical composition of Panicum maximum cv. Mombaça under defoliations intensities and frequencies Productividad y composición química del forraje de Panicum maximum cv. Mombaça bajo intensidades y frecuencias de defoliación Produtividade e composição química da forragem de Panicum maximum cv. Mombaça sob intensidades e frequências de desfolhação |
| title |
Forage productivity and chemical composition of Panicum maximum cv. Mombaça under defoliations intensities and frequencies |
| spellingShingle |
Forage productivity and chemical composition of Panicum maximum cv. Mombaça under defoliations intensities and frequencies Costa, Newton de Lucena Calcio Materia seca verde Magnesio Nitrógeno Fósforo Potasio. Cálcio Matéria seca verde Magnésio Nitrogênio Fósforo Potássio. Calcium Green dry matter Magnesium Nitrogen Phosphorus Potassium. |
| title_short |
Forage productivity and chemical composition of Panicum maximum cv. Mombaça under defoliations intensities and frequencies |
| title_full |
Forage productivity and chemical composition of Panicum maximum cv. Mombaça under defoliations intensities and frequencies |
| title_fullStr |
Forage productivity and chemical composition of Panicum maximum cv. Mombaça under defoliations intensities and frequencies |
| title_full_unstemmed |
Forage productivity and chemical composition of Panicum maximum cv. Mombaça under defoliations intensities and frequencies |
| title_sort |
Forage productivity and chemical composition of Panicum maximum cv. Mombaça under defoliations intensities and frequencies |
| author |
Costa, Newton de Lucena |
| author_facet |
Costa, Newton de Lucena Jank, Liana Magalhães, João Avelar Bendahan, Amaury Burlamaqui Rodrigues, Braz Henrique Nunes Santos, Francisco José de Seixas |
| author_role |
author |
| author2 |
Jank, Liana Magalhães, João Avelar Bendahan, Amaury Burlamaqui Rodrigues, Braz Henrique Nunes Santos, Francisco José de Seixas |
| author2_role |
author author author author author |
| dc.contributor.author.fl_str_mv |
Costa, Newton de Lucena Jank, Liana Magalhães, João Avelar Bendahan, Amaury Burlamaqui Rodrigues, Braz Henrique Nunes Santos, Francisco José de Seixas |
| dc.subject.por.fl_str_mv |
Calcio Materia seca verde Magnesio Nitrógeno Fósforo Potasio. Cálcio Matéria seca verde Magnésio Nitrogênio Fósforo Potássio. Calcium Green dry matter Magnesium Nitrogen Phosphorus Potassium. |
| topic |
Calcio Materia seca verde Magnesio Nitrógeno Fósforo Potasio. Cálcio Matéria seca verde Magnésio Nitrogênio Fósforo Potássio. Calcium Green dry matter Magnesium Nitrogen Phosphorus Potassium. |
| description |
The effects of defoliation frequency (28, 35, 42 and 49 days) and defoliation intensity (30, 40 and 50 cm above the ground) on green dry matter (GDM) yield, and chemical composition of Panicum maximum cv. Mombaça were evaluated under natural field conditions at the Roraima´s savannas. Defoliation regimes affect productivity and chemical composition of grass forage. The decrease in the pasture defoliation frequency and intensity improved the accumulation of forage, however it reduces the tissue concentrations of N, P, Ca, Mg and K. Irrespective of defoliation frequencies, the highest levels of N (23.99 g kg-1), P (2.12 g kg-1), Ca (4.22 g kg-1), Mg (2.87 g kg-1) and K (21.45 g kg-1) were recorded for the defoliation intensity at 40 cm above the ground. The use of defoliation frequency around 42 days and defoliation intensity of 42,9 cm above the ground can be considered adequate for the management of pastures of P. maximum cv. Mombaça, in order to provides higher forage productivity and quality, regrowth vigor, larger efficiency of forage utilization, greater tissue renewal and canopy structure more favorable to grazing. |
| publishDate |
2021 |
| dc.date.none.fl_str_mv |
2021-07-15 |
| 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://rsdjournal.org/index.php/rsd/article/view/17494 10.33448/rsd-v10i8.17494 |
| url |
https://rsdjournal.org/index.php/rsd/article/view/17494 |
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10.33448/rsd-v10i8.17494 |
| dc.language.iso.fl_str_mv |
eng |
| language |
eng |
| dc.relation.none.fl_str_mv |
https://rsdjournal.org/index.php/rsd/article/view/17494/15649 |
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https://creativecommons.org/licenses/by/4.0 info:eu-repo/semantics/openAccess |
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https://creativecommons.org/licenses/by/4.0 |
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openAccess |
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application/pdf |
| dc.publisher.none.fl_str_mv |
Research, Society and Development |
| publisher.none.fl_str_mv |
Research, Society and Development |
| dc.source.none.fl_str_mv |
Research, Society and Development; Vol. 10 No. 8; e42910817494 Research, Society and Development; Vol. 10 Núm. 8; e42910817494 Research, Society and Development; v. 10 n. 8; e42910817494 2525-3409 reponame:Research, Society and Development instname:Universidade Federal de Itajubá (UNIFEI) instacron:UNIFEI |
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Universidade Federal de Itajubá (UNIFEI) |
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UNIFEI |
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UNIFEI |
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Research, Society and Development |
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Research, Society and Development |
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Research, Society and Development - Universidade Federal de Itajubá (UNIFEI) |
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rsd.articles@gmail.com |
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1797052682497687552 |