Avaliação agronômica de capim marandu [Brachiaria brizantha (Hochst ex A. RICH.) STAPF. cv. Marandu] em sistemas integrados de produção
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Tipo de documento: | Dissertação |
Idioma: | por |
Título da fonte: | Repositório Institucional da UFMT |
Texto Completo: | http://ri.ufmt.br/handle/1/2136 |
Resumo: | Understanding systems that provide shade such as silvopastoral systems has been recognized as key for developing improved management techniques of those systems. Evaluation of forage plants in pastures is a way to guarantee the understanding of the mechanisms that drive systems responses. The objective of this research was to evaluate sward structural characteristics, forage accumulation and plant-part composition of Marandu palisadegrass [Brachiaria brizantha (Hochst ex A. RICH.) STAPF. cv. Marandu] in a silvopastoral system. The experiment was carried out in Sinop, State of Mato Grosso, at Embrapa Agrosilvopastoral. The experimental design was completely randomized with two treatments (production systems): Silvopastoral (SSP) and full sun (PS) where the forage was harvested to 12 cm every 28days from November 2013 to November 2014, a period that was divided into 5 seasons: late spring, summer, autumn, winter and early spring. The total forage accumulation was similar in both systems (p = 0.1495), with 7350 kg DM ha-1 in the silvopastoral system and 9000 kg DM ha-1 for full sun. There was a season x system interaction for mass of leaf, stem and dead material in the harvested forage. The leaf mass was 42% higher in summer than the other seasons, and the autumn was 63% higher in PS when compared to SSP. Sward height, LAI and LI were influenced by season (p <0.001). At preharvest sward height was greatest in the summer (23 cm) and lowest in the winter (15.5 cm), with 18, 17 and 19 cm in early spring, late spring and autumn, respectively. For LAI and LI, the highest values were registered in the summer (3.98 and 94.8%) and lowest in the winter (1.35 and 64.5%). ANG did not differ (p = 0.87) among seasons averaging 50°. At post - xi harvest, the average values of LAI varied (p < 0.0001) between 2.1 in the summer and 0.98 in the winter. The IL was affected by season (p < 0.0001) and it was higher in the summer (75.3%) and lowest in the winter (51.2%), although the autumn value was equal to that of the summer (71.6%). ANG differred (p = 0.005) only among seasons, with average values in winter, autumn and summer of 59°, 47° and 49°, respectively. The system evaluated had been established three years prior to the beginning of the experiment, and trees were, an average, 9 m high. We conclude that Marandu palisadegrass pastures in silvopastoral systems, with 30 m between rows of 9-m-high trees have forage accumulation similar to that of pastures under full sun. Plant-part composition was different in the rainy-dry and dry-rainy transition periods. Sward structural characteristics suggest that shading may start to cause morphophological and physiological responses that may reduce forage production in upcoming years. |
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Avaliação agronômica de capim marandu [Brachiaria brizantha (Hochst ex A. RICH.) STAPF. cv. Marandu] em sistemas integrados de produçãoPleno solSombreamentoCorteSilvipastorilIntegração pecuária-florestaCNPQ::CIENCIAS AGRARIAS::ZOOTECNIAFull sunShadingIntermittent defoliationSilvopastoralCattle-forestry integrationUnderstanding systems that provide shade such as silvopastoral systems has been recognized as key for developing improved management techniques of those systems. Evaluation of forage plants in pastures is a way to guarantee the understanding of the mechanisms that drive systems responses. The objective of this research was to evaluate sward structural characteristics, forage accumulation and plant-part composition of Marandu palisadegrass [Brachiaria brizantha (Hochst ex A. RICH.) STAPF. cv. Marandu] in a silvopastoral system. The experiment was carried out in Sinop, State of Mato Grosso, at Embrapa Agrosilvopastoral. The experimental design was completely randomized with two treatments (production systems): Silvopastoral (SSP) and full sun (PS) where the forage was harvested to 12 cm every 28days from November 2013 to November 2014, a period that was divided into 5 seasons: late spring, summer, autumn, winter and early spring. The total forage accumulation was similar in both systems (p = 0.1495), with 7350 kg DM ha-1 in the silvopastoral system and 9000 kg DM ha-1 for full sun. There was a season x system interaction for mass of leaf, stem and dead material in the harvested forage. The leaf mass was 42% higher in summer than the other seasons, and the autumn was 63% higher in PS when compared to SSP. Sward height, LAI and LI were influenced by season (p <0.001). At preharvest sward height was greatest in the summer (23 cm) and lowest in the winter (15.5 cm), with 18, 17 and 19 cm in early spring, late spring and autumn, respectively. For LAI and LI, the highest values were registered in the summer (3.98 and 94.8%) and lowest in the winter (1.35 and 64.5%). ANG did not differ (p = 0.87) among seasons averaging 50°. At post - xi harvest, the average values of LAI varied (p < 0.0001) between 2.1 in the summer and 0.98 in the winter. The IL was affected by season (p < 0.0001) and it was higher in the summer (75.3%) and lowest in the winter (51.2%), although the autumn value was equal to that of the summer (71.6%). ANG differred (p = 0.005) only among seasons, with average values in winter, autumn and summer of 59°, 47° and 49°, respectively. The system evaluated had been established three years prior to the beginning of the experiment, and trees were, an average, 9 m high. We conclude that Marandu palisadegrass pastures in silvopastoral systems, with 30 m between rows of 9-m-high trees have forage accumulation similar to that of pastures under full sun. Plant-part composition was different in the rainy-dry and dry-rainy transition periods. Sward structural characteristics suggest that shading may start to cause morphophological and physiological responses that may reduce forage production in upcoming years.CAPESO conhecimento de sistemas que proporcionam quantidades parciais de sombra como os sistemas silvipastoris tem sido uma necessidade. A avaliação de plantas forrageiras em pastagens é uma maneira de garantir o entendimento dos mecanismos que governam as respostas nos sistemas de produção. O objetivo foi avaliar características estruturais, acúmulo de forragem e composição morfológica de capim Marandu [Brachiaria brizantha (Hochst ex A. RICH.) STAPF. cv. Marandu] em um sistema silvipastoril e a pleno sol. O experimento foi conduzido em área experimental da Embrapa Agrossilvipastoril, localizada em Sinop – MT. O delineamento foi o inteiramente casualizado com dois tratamentos em arranjo fatorial 2 x 5, correspondentes a dois sistemas de produção: silvipastoril (SSP) e a pleno sol (PS) com capim Marandu sob corte em 5 estações do ano: final de primavera, verão, outono, inverno, início de primavera; com 8 repetições no SSP e 4 no PS. Durante os 365 dias do período experimental (novembro de 2013 a novembro de 2014) avaliou-se acúmulo e composição morfológica da forragem, e as características estruturais do dossel: altura, interceptação luminosa (IL), índice de área foliar (IAF) e ângulo da folhagem (ANG). O acúmulo de forragem total foi semelhante nos dois sistemas (p = 0,1495). Houve efeito de interação estação x sistema de produção para massa de folha, de colmo e de material morto. A massa de folha foi 42% maior no verão que nas demais estações e no outono foi 63% maior no PS em relação ao SSP. Altura, IAF e IL foram influenciados pelas estações do ano (p < 0,001). Nas avaliações de pré corte, a altura foi maior no verão (23 cm) e menor no inverno (15,5 cm), com alturas de 18, 17 e 19 cm no início de primavera, final de primavera e outono respectivamente. Para IAF e IL, os maiores valores foram registrados no verão (3,98 e 94,8 %, respectivamente) e os ix menores no inverno (1,35 e 64,5 %, respectivamente). ANG não diferiu (p = 0,87) entre estações com valor médio de 50º. No pós corte, para efeito de estação, os valores médios de IAF variaram (p < 0,0001) entre 2,1 no verão e 0,98 no inverno. O IL diferiu (p <0,0001) entre estações, com maior valor no verão (75,3 %) e menor no inverno (51,2 %), embora o valor do outono (71,6 %) tenha sido igual ao do verão. ANG diferiu (p = 0,005) somente entre estações, com valores médios no inverno, outono e verão de 59, 47 e 49º, respectivamente, não sendo possível avaliar os valores das características estruturais (IL, IAF e ANG) no final e início de primavera. Pastagens de capim Marandu em sistemas silvipastoris, com renques espaçados de 30 metros e Eucalipto com 9 metros de altura, apresentam acúmulo de forragem semelhantes ao pleno sol. A composição morfológica é distinta nos períodos de transição água-seca e seca-águas. As características estruturais de dossel indicam que o sombreamento começa a interferir e causar alterações morfofisiológicas que podem reduzir a produção nos anos consecutivos de implantação do sistema silvipastoril.Universidade Federal de Mato GrossoBrasilInstituto de Ciências Agrárias e Ambientais (ICAA) – SinopUFMT CUS - SinopPrograma de Pós-Graduação em ZootecniaPedreira, Bruno Carneiro ehttp://lattes.cnpq.br/2484913274684376Pedreira, Bruno Carneiro e791.490.575-53http://lattes.cnpq.br/2484913274684376Pereira, Dalton Henrique040.244.796-44http://lattes.cnpq.br/5241856017855252791.490.575-53Pina, Douglas dos Santos037.805.796-44http://lattes.cnpq.br/3813286040288098Pedreira, Carlos Guilherme Silveira074.169.698-32http://lattes.cnpq.br/5324984796978878Gomes, Fagner Junior2020-11-11T14:05:16Z2015-02-092020-11-11T14:05:16Z2015-02-02info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisGOMES, Fagner Junior. Avaliação agronômica de capim marandu [Brachiaria brizantha (Hochst ex A. RICH.) STAPF. cv. Marandu] em sistemas integrados de produção. 2015. 58 f. Dissertação (Mestrado em Zootecnia) - Universidade Federal de Mato Grosso, Campus Universitário de Sinop, Instituto de Ciências Agrárias e Ambientais, Sinop, 2015.http://ri.ufmt.br/handle/1/2136porinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFMTinstname:Universidade Federal de Mato Grosso (UFMT)instacron:UFMT2020-11-12T06:01:32Zoai:localhost:1/2136Repositório InstitucionalPUBhttp://ri.ufmt.br/oai/requestjordanbiblio@gmail.comopendoar:2020-11-12T06:01:32Repositório Institucional da UFMT - Universidade Federal de Mato Grosso (UFMT)false |
dc.title.none.fl_str_mv |
Avaliação agronômica de capim marandu [Brachiaria brizantha (Hochst ex A. RICH.) STAPF. cv. Marandu] em sistemas integrados de produção |
title |
Avaliação agronômica de capim marandu [Brachiaria brizantha (Hochst ex A. RICH.) STAPF. cv. Marandu] em sistemas integrados de produção |
spellingShingle |
Avaliação agronômica de capim marandu [Brachiaria brizantha (Hochst ex A. RICH.) STAPF. cv. Marandu] em sistemas integrados de produção Gomes, Fagner Junior Pleno sol Sombreamento Corte Silvipastoril Integração pecuária-floresta CNPQ::CIENCIAS AGRARIAS::ZOOTECNIA Full sun Shading Intermittent defoliation Silvopastoral Cattle-forestry integration |
title_short |
Avaliação agronômica de capim marandu [Brachiaria brizantha (Hochst ex A. RICH.) STAPF. cv. Marandu] em sistemas integrados de produção |
title_full |
Avaliação agronômica de capim marandu [Brachiaria brizantha (Hochst ex A. RICH.) STAPF. cv. Marandu] em sistemas integrados de produção |
title_fullStr |
Avaliação agronômica de capim marandu [Brachiaria brizantha (Hochst ex A. RICH.) STAPF. cv. Marandu] em sistemas integrados de produção |
title_full_unstemmed |
Avaliação agronômica de capim marandu [Brachiaria brizantha (Hochst ex A. RICH.) STAPF. cv. Marandu] em sistemas integrados de produção |
title_sort |
Avaliação agronômica de capim marandu [Brachiaria brizantha (Hochst ex A. RICH.) STAPF. cv. Marandu] em sistemas integrados de produção |
author |
Gomes, Fagner Junior |
author_facet |
Gomes, Fagner Junior |
author_role |
author |
dc.contributor.none.fl_str_mv |
Pedreira, Bruno Carneiro e http://lattes.cnpq.br/2484913274684376 Pedreira, Bruno Carneiro e 791.490.575-53 http://lattes.cnpq.br/2484913274684376 Pereira, Dalton Henrique 040.244.796-44 http://lattes.cnpq.br/5241856017855252 791.490.575-53 Pina, Douglas dos Santos 037.805.796-44 http://lattes.cnpq.br/3813286040288098 Pedreira, Carlos Guilherme Silveira 074.169.698-32 http://lattes.cnpq.br/5324984796978878 |
dc.contributor.author.fl_str_mv |
Gomes, Fagner Junior |
dc.subject.por.fl_str_mv |
Pleno sol Sombreamento Corte Silvipastoril Integração pecuária-floresta CNPQ::CIENCIAS AGRARIAS::ZOOTECNIA Full sun Shading Intermittent defoliation Silvopastoral Cattle-forestry integration |
topic |
Pleno sol Sombreamento Corte Silvipastoril Integração pecuária-floresta CNPQ::CIENCIAS AGRARIAS::ZOOTECNIA Full sun Shading Intermittent defoliation Silvopastoral Cattle-forestry integration |
description |
Understanding systems that provide shade such as silvopastoral systems has been recognized as key for developing improved management techniques of those systems. Evaluation of forage plants in pastures is a way to guarantee the understanding of the mechanisms that drive systems responses. The objective of this research was to evaluate sward structural characteristics, forage accumulation and plant-part composition of Marandu palisadegrass [Brachiaria brizantha (Hochst ex A. RICH.) STAPF. cv. Marandu] in a silvopastoral system. The experiment was carried out in Sinop, State of Mato Grosso, at Embrapa Agrosilvopastoral. The experimental design was completely randomized with two treatments (production systems): Silvopastoral (SSP) and full sun (PS) where the forage was harvested to 12 cm every 28days from November 2013 to November 2014, a period that was divided into 5 seasons: late spring, summer, autumn, winter and early spring. The total forage accumulation was similar in both systems (p = 0.1495), with 7350 kg DM ha-1 in the silvopastoral system and 9000 kg DM ha-1 for full sun. There was a season x system interaction for mass of leaf, stem and dead material in the harvested forage. The leaf mass was 42% higher in summer than the other seasons, and the autumn was 63% higher in PS when compared to SSP. Sward height, LAI and LI were influenced by season (p <0.001). At preharvest sward height was greatest in the summer (23 cm) and lowest in the winter (15.5 cm), with 18, 17 and 19 cm in early spring, late spring and autumn, respectively. For LAI and LI, the highest values were registered in the summer (3.98 and 94.8%) and lowest in the winter (1.35 and 64.5%). ANG did not differ (p = 0.87) among seasons averaging 50°. At post - xi harvest, the average values of LAI varied (p < 0.0001) between 2.1 in the summer and 0.98 in the winter. The IL was affected by season (p < 0.0001) and it was higher in the summer (75.3%) and lowest in the winter (51.2%), although the autumn value was equal to that of the summer (71.6%). ANG differred (p = 0.005) only among seasons, with average values in winter, autumn and summer of 59°, 47° and 49°, respectively. The system evaluated had been established three years prior to the beginning of the experiment, and trees were, an average, 9 m high. We conclude that Marandu palisadegrass pastures in silvopastoral systems, with 30 m between rows of 9-m-high trees have forage accumulation similar to that of pastures under full sun. Plant-part composition was different in the rainy-dry and dry-rainy transition periods. Sward structural characteristics suggest that shading may start to cause morphophological and physiological responses that may reduce forage production in upcoming years. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-02-09 2015-02-02 2020-11-11T14:05:16Z 2020-11-11T14:05:16Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
format |
masterThesis |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
GOMES, Fagner Junior. Avaliação agronômica de capim marandu [Brachiaria brizantha (Hochst ex A. RICH.) STAPF. cv. Marandu] em sistemas integrados de produção. 2015. 58 f. Dissertação (Mestrado em Zootecnia) - Universidade Federal de Mato Grosso, Campus Universitário de Sinop, Instituto de Ciências Agrárias e Ambientais, Sinop, 2015. http://ri.ufmt.br/handle/1/2136 |
identifier_str_mv |
GOMES, Fagner Junior. Avaliação agronômica de capim marandu [Brachiaria brizantha (Hochst ex A. RICH.) STAPF. cv. Marandu] em sistemas integrados de produção. 2015. 58 f. Dissertação (Mestrado em Zootecnia) - Universidade Federal de Mato Grosso, Campus Universitário de Sinop, Instituto de Ciências Agrárias e Ambientais, Sinop, 2015. |
url |
http://ri.ufmt.br/handle/1/2136 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
Universidade Federal de Mato Grosso Brasil Instituto de Ciências Agrárias e Ambientais (ICAA) – Sinop UFMT CUS - Sinop Programa de Pós-Graduação em Zootecnia |
publisher.none.fl_str_mv |
Universidade Federal de Mato Grosso Brasil Instituto de Ciências Agrárias e Ambientais (ICAA) – Sinop UFMT CUS - Sinop Programa de Pós-Graduação em Zootecnia |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da UFMT instname:Universidade Federal de Mato Grosso (UFMT) instacron:UFMT |
instname_str |
Universidade Federal de Mato Grosso (UFMT) |
instacron_str |
UFMT |
institution |
UFMT |
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Repositório Institucional da UFMT |
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Repositório Institucional da UFMT |
repository.name.fl_str_mv |
Repositório Institucional da UFMT - Universidade Federal de Mato Grosso (UFMT) |
repository.mail.fl_str_mv |
jordanbiblio@gmail.com |
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1804648503753834496 |