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Registro Completo |
Biblioteca(s): |
Embrapa Cocais; Embrapa Florestas; Embrapa Roraima. |
Data corrente: |
18/02/2016 |
Data da última atualização: |
07/07/2016 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
WAGNER, F. H.; HÉRAULT, B.; BONAL, D.; STAHL, C.; ANDERSON, L. O.; BAKER, T. R.; BECKER, G. S.; BEECKMAN, H.; SOUZA, D. B.; BOTOSSO, P. C.; BOWMAN, D. M. J. S.; BRÄUNING, A.; BREDE, B.; BROWN, F. I.; CAMARERO, J. J.; CAMARGO, P. B.; CARDOSO, F. C. G.; CARVALHO, F. A.; CASTRO, W.; CHAGAS, R. K.; CHAVE, J.; CHIDUMAYO, E. N.; CLARK, D. A.; COSTA, F. R. C.; COURALET, C.; MAURICIO, P. H. da S.; DALITZ, H.; CASTRO, V. R. de; MILANI, J. E. de F.; OLIVEIRA, E. C. de; ARRUDA, L. de S.; DEVINEAU, JEAN-LOUIS; DREW, D. M.; DÜNISCH, O.; DURIGAN, G.; ELIFURAHA, E.; FEDELE, F.; FEDELE, L. F.; FIGUEIREDO FILHO, A.; FINGER, C. A. G.; FRANCO, A. C.; FREITAS JÚNIOR, J. L.; GALVÃO, F.; GEBREKIRSTOS, A.; GLINIARS, R.; GRAÇA, P. M. L. de A.; GRIFFITHS, A. D.; GROGAN, J.; GUAN, K.; HOMEIER, J.; KANIESKI, M. R.; KHO, L. K.; KOENIG, J.; KREPKOWSKI, J.; LEMOS-FILHO, J. P.; LIEBERMAN, D.; LIEBERMAN, M. E.; LISI, C. S.; SANTOS, T. L.; LÓPEZ AYALA, J. L.; MAEDA, E. E.; MALHI, Y.; MARIA, V. R. B.; MARQUES, M. C. M.; MARQUES, R.; CHAMBA, H. M.; MBWAMBO, L.; MELGAÇO, K. L. L.; MENDIVELSO, H. A.; MURPHY, B. P.; O’BRIEN, J. J.; OBERBAUER, S. F.; OKADA, N.; PÉLISSIER, R.; PRIOR, L. D.; ROIG, F. A.; ROSS, M.; ROSSATTO, D. R.; ROSSI, V.; ROWLAND, L.; RUTISHAUSER, E.; SANTANA, H.; SCHULZE, M.; SELHORST, D.; SILVA, W. R.; SILVEIRA, M.; SPANNL, S.; SWAINE, M. D.; TOLEDO, J. J.; TOLEDO, M. M.; TOLEDO, M.; TOMA. T.; TOMAZELLO FILHO, M.; VALDEZ HERNÁNDEZ, J. I.; VERBESSELT, J.; VIEIRA, S. A.; VINCENT, G.; CASTILHO, C. V. de; VOLLAND, F.; WORBES, M.; ZANON, M. L. B.; ARAGÃO, L. E. O. C. |
Afiliação: |
FABIEN H. WAGNER, Remote Sensing Division, National Institute for Space Research - INPE; BRUNO HÉRAULT, CIRAD, UMR Ecologie des Forêts de Guyane; DAMIEN BONAL, INRA; CLÉMENT STAHL, Department of Biology, University of Antwerp; LIANA O. ANDERSON, National Center for Monitoring and Early Warning of Natural Disasters; TIMOTHY R. BAKER, School of Geography, University of Leeds; GABRIEL SEBASTIAN BECKER, Institute of Botany, University of Hohenheim; HANS BEECKMAN, Laboratory for Wood Biology and Xylarium, Royal Museum for Central Africa; DANILO BOANERGES SOUZA, Programa de Pós-graduação em Ciências de Florestas Tropicais, Instituto Nacional de Pesquisas da Amazônia; PAULO CESAR BOTOSSO, CNPF; DAVID M. J. S. BOWMAN, School of Biological Sciences, University of Tasmania; ACHIM BRÄUNING, Institute of Geography, University of Erlangen-Nuremberg; BENJAMIN BREDE, Laboratory of Geo-information Science and Remote Sensing, Wageningen University; FOSTER IRVING BROWN, Centro de Ciências Biológicas e da Natureza, Laboratório de Botânica e Ecologia Vegetal; JESUS JULIO CAMARERO, Instituto Pirenaico de Ecologia, Consejo Superior de Investigaciones Cientificas; PLÍNIO BARBOSA CAMARGO, Centro de Energia Nuclear na Agricultura, Laboratório de Ecologia Isotópica, Universidade de São Paulo; FERNANDA C.G. CARDOSO, Departamento de Botânica, Universidade Federal do Paraná; FABRÍCIO ALVIM CARVALHO, Departamento de Botânica, Universidade Federal de Juiz de Fora (UFJF); WENDESON CASTRO, Programa de Pós-Graduação Ecologia e Manejo de Recursos Naturais, Universidade Federal do Acre; RUBENS KOLOSKI CHAGAS, Departamento de Ecologia do Instituto de Biociências, Universidade de São Paulo (USP); JÉROME CHAVE, UMR 5174 Laboratoire Evolution et DiversitéBiologique, CNRS & UniversitéPaul Sabatier, Toulouse; EMMANUEL N. CHIDUMAYO, Biological Sciences Department, University of Zambia; DEBORAH A. CLARK, Department of Biology, University of Missouri-St. Louis; FLAVIA REGINA CAPELLOTTO COSTA, Coordenação de Pesquisas em Biodiversidade, Instituto Nacional de Pesquisas da Amazônia; CAMILLE COURALET, Laboratory for Wood Biology and Xylarium, Royal Museum for Central Africa; PAULO HENRIQUE DA SILVA, Centro de Ciências Biológicas e da Natureza, Laboratóio de Botânica e Ecologia Vegetal; HELMUT DALITZ, Institute of Botany, University of Hohenheim; VINICIUS RESENDE DE CASTRO, Departamento de Engenharia Florestal, Universidade Federal de Viçosa; JAÇANAN ELOISA DE FREITAS MILANI, Departamento de Engenharia Florestal, Universidade Federal do Paraná; EDILSON CONSUELO DE OLIVEIRA, Centro de Ciêcias Biológicas e da Natureza, Laboratório de Botânica e Ecologia Vegetal, Universidade Federal do Acre; LUCIANO DE SOUZA ARRUDA, Prefeitura Municipal de Rio Branco; JEAN-LOUIS DEVINEAU, Département Hommes, Natures, Sociétés, Centre National de la Recherche Scientifique (CNRS) et UMR 208 Patrimoines Locaux et Gouvernance; DAVID M. DREW, Dept. Forest and Wood Science, University of Stellenbosch; OLIVER DÜNISCH, Meisterschule Ebern für das Schreinerhandwerk; GISELDA DURIGAN, Floresta Estadual de Assis; ELISHA ELIFURAHA, Tanzania Forestry Research Institute (TAFORI); MARCIO FEDELE, Departamento de Ciências Florestais, Escola Superior de Agricultura Luiz de Queiroz, Universidade de São Paulo; LIGIA FERREIRA FEDELE, Departamento de Ciências Florestais, Escola Superior de Agricultura Luiz de Queiroz, Universidade de São Paulo; AFONSO FIGUEIREDO FILHO, Departamento de Engenharia Florestal – DEF, Universidade Estadual do Centro-Oeste; CÉSAR AUGUSTO GUIMARÃES FINGER, Departamento de Ciências Florestais, Centro de Ciências Rurais, Universidade Federal de Santa Maria; AUGUSTO CÉSAR FRANCO, Departamento de Botânica, Laboratório de Fisiologia Vegetal, Universidade de Brasília; JOÃO LIMA FREITAS JÚNIOR, Programa de Pós-Graduação Ecologia e Manejo de Recursos Naturais, Universidade Federal do Acre; FRANKLIN GALVÃO, Departamento de Engenharia Florestal, Universidade Federal do Paraná; ASTER GEBREKIRSTOS, World Agroforestry Centre (ICRAF); ROBERT GLINIARS, Institute of Botany, University of Hohenheim; PAULO MAURÍCIO LIMA DE ALENCASTRO, Coordenação de Pesquisa em Ecologia, Instituto Nacional de Pesquisas da Amazônia; ANTHONY D. GRIFFITHS, Research Institute for Environment and Livelihoods, Charles Darwin University; JAMES GROGAN, Department of Biological Sciences, Mount Holyoke College; KAIYU GUAN, Department of Earth System Science, Stanford University; JÜRGEN HOMEIER, Department of Plant Ecology, Albrecht von Haller Institute of Plant Sciences, University of Göttingen; MARIA RAQUEL KANIESKI, Departamento de Engenharia Florestal, Universidade do Estado de Santa Catarina; LIP KHOON KHO, Tropical Peat Research Institute, Biological Research Division, Malaysian Palm Oil Board; JENNIFER KOENIG, Research Institute for Environment and Livelihoods, Charles Darwin University; JULIA KREPKOWSKI, Institute of Geography, University of Erlangen-Nuremberg; JOSÉ PIRES LEMOS-FILHO, Departamento de Botânica, Instituto de Ciências Biologicas, Universidade Federal de Minas Gerais; DIANA LIEBERMAN, Division of Science & Environmental Policy, California State University Monterey Bay; MILTON EUGENE LIEBERMAN, Division of Science & Environmental Policy, California State University Monterey Bay; CLAUDIO SERGIO LISI, Departamento de Ciências Florestais, Escola Superior de Agricultura Luiz de Queiroz, Universidade de São Paulo; TOMAZ LONGHI SANTOS, Departamento de Engenharia Florestal, Universidade Federal do Paraná; JOSÉ LUIS LÓPEZ AYALA, Programa Forestal, Colegio de Postgraduados; EDUARDO EIJJI MAEDA, Department of Geosciences and Geography, University of Helsinki; YADVINDER MALHI, School of Geography and the Environment, University of Oxford; VIVIAN R.B. MARIA, Departamento de Ciências Florestais, Escola Superior de Agricultura Luiz de Queiroz, Universidade de São Paulo; MARCIA C. M. MARQUES, Departamento de Botânica, Universidade Federal do Paraná; RENATO MARQUES, Departamento de Solos e Engenharia Agrícola, Universidade Federal do Paraná; HECTOR MAZA CHAMBA, Laboratoria de Dendrochronologia y Anatomia de Maderas Espinoza; LAWRENCE MBWAMBO, Tanzania Forestry Research Institute (TAFORI); KARINA LIANA LISBOA MELGAÇO, Coordenação de Pesquisas em Biodiversidade, Instituto Nacional de Pesquisas da Amazônia; HOOZ ANGELA MENDIVELSO, Instituto Pirenaico de Ecologia, Consejo Superior de Investigaciones Cientificas (IPE-CSIC); BRETT P. MURPHY, Research Institute for the Environment and Livelihoods, Charles Darwin University; JOSEPH J. O’BRIEN, Center for Forest Disturbance Science, USDA Forest Service; STEVEN F. OBERBAUER, Department of Biological Sciences, Florida International University; NAOKI OKADA, Graduate School of Agriculture, Kyoto University; RAPHAËL PÉLISSIER, Institut Français de Pondicherry; LYNDA D. PRIOR, School of Biological Sciences, University of Tasmania; FIDEL ALEJANDRO ROIG, Tree Ring and Environmental History Laboratory, Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales – CONICET; MICHAEL ROSS, Department of Earth and Environment, Southeast Environmental Research Center, Florida International University; DAVI RODRIGO ROSSATTO, Departamento de Biologia Aplicada, FCAV, Universidade Estadual Paulista, UNESP; VIVIEN ROSSI, UR B&SEF (Biens et services des écosystèmes forestiers tropicaux), CIRAD; LUCY ROWLAND, School of Geosciences, University of Edinburgh; ERVAN RUTISHAUSER, CarboForExpert; HELLEN SANTANA, Coordenação de Pesquisas em Biodiversidade, Instituto Nacional de Pesquisas da Amazônia; MARK SCHULZE, HJ Andrews Experimental Forest, Oregon State University; DIOGO SELHORST, Ibama; WILLIAMAR RODRIGUES SILVA, PRONAT – Programa de Pós-Graduação em Recurso Naturais, Universidade Federal de Roraima; MARCOS SILVEIRA, Centro de Ciências Biológicas e da Natureza, Laboratóio de Botânica e Ecologia Vegetal, Universidade Federal do Acre; SUSANNE SPANNL, Institute of Geography, University of Erlangen-Nuremberg; MICHAEL D. SWAINE, School of Biological Sciences, University of Aberdeen; JOSÉ JULIO TOLEDO, Departamento de Ciências Ambientais, Universidade Federal do Amapá; MARCOS MIRANDA TOLEDO, CPACP; MARISOL TOLEDO, Instituto Boliviano de Investigacion Forestal (IBIF), Universidad Autonoma Gabriel René Moreno; TAKESHI TOMA, Department of Forest Vegetation, Forestry and Forest Products Research Institute (FFPRI); MARIO TOMAZELLO FILHO, Departamento de Ciências Florestais, Universidade de São Paulo, Escola Superior de Agricultura Luiz de Queiroz; JUAN IGNACIO VALDEZ HERNÁNDEZ, Programa Forestal, Colegio de Postgraduados; JAN VERBESSELT, Laboratory of Geo-information Science and Remote Sensing, Wageningen University; SIMONE APARECIDA VIEIRA, Núcleo de Estudos e Pesquisas Ambientais (NEPAM), Universidade Estadual de Campinas (UNICAMP); GRÉGOIRE VINCENT, UMR AMAP (botAnique et bioinforMatique de l’Architecture des Plantes), IRD; CAROLINA VOLKMER DE CASTILHO, CNPS; FRANZISKA VOLLAND, Institute of Geography, University of Erlangen-Nuremberg; MARTIN WORBES, Crop Production Systems in the Tropics, Georg-August-University; MAGDA LEA BOLZAN ZANON, Departamento de Engenharia Florestal, Centro de Educação Superior Norte, Universidade Federal de Santa Maria; LUIZ E.O.C. ARAGÃO, College of Life and Environmental Sciences, University of Exetex. |
Título: |
Climate seasonality limits leaf carbon assimilation and wood productivity in tropical forests. |
Ano de publicação: |
2016 |
Fonte/Imprenta: |
Biogeosciences, v. 13, n. 8, p. 2537-2562, Apr. 2016. |
DOI: |
10.5194/bg-13-2537-2016 |
Idioma: |
Inglês |
Conteúdo: |
The seasonal climate drivers of the carbon cy-
cle in tropical forests remain poorly known, although these
forests account for more carbon assimilation and storage than
any other terrestrial ecosystem. Based on a unique combina-
tion of seasonal pan-tropical data sets from 89 experimental
sites (68 include aboveground wood productivity measure-
ments and 35 litter productivity measurements), their asso-
ciated canopy photosynthetic capacity (enhanced vegetation
index, EVI) and climate, we ask how carbon assimilation
and aboveground allocation are related to climate seasonal-
ity in tropical forests and how they interact in the seasonal
carbon cycle. We found that canopy photosynthetic capacity
seasonality responds positively to precipitation when rain-
fall is < 2000 mm yr-1 (water-limited forests) and to radia-
tion otherwise (light-limited forests). On the other hand, in-
dependent of climate limitations, wood productivity and lit-
terfall are driven by seasonal variation in precipitation and
evapotranspiration, respectively. Consequently, light-limited
forests present an asynchronism between canopy photosyn-
thetic capacity and wood productivity. First-order control by
precipitation likely indicates a decrease in tropical forest pro-
ductivity in a drier climate in water-limited forest, and in cur-
rent light-limited forest with future rainfall < 2000 mm yr-1. |
Thesagro: |
Carbono; Floresta tropical; Madeira; Mudança Climática. |
Thesaurus Nal: |
Carbon sinks; Climate change; Tropical forests; Wood. |
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/145152/1/2016-P.Botosso-Climate-seasonality-limits.pdf
|
Marc: |
LEADER 05165naa a2201441 a 4500 001 2037530 005 2016-07-07 008 2016 bl uuuu u00u1 u #d 024 7 $a10.5194/bg-13-2537-2016$2DOI 100 1 $aWAGNER, F. H. 245 $aClimate seasonality limits leaf carbon assimilation and wood productivity in tropical forests.$h[electronic resource] 260 $c2016 520 $aThe seasonal climate drivers of the carbon cy- cle in tropical forests remain poorly known, although these forests account for more carbon assimilation and storage than any other terrestrial ecosystem. Based on a unique combina- tion of seasonal pan-tropical data sets from 89 experimental sites (68 include aboveground wood productivity measure- ments and 35 litter productivity measurements), their asso- ciated canopy photosynthetic capacity (enhanced vegetation index, EVI) and climate, we ask how carbon assimilation and aboveground allocation are related to climate seasonal- ity in tropical forests and how they interact in the seasonal carbon cycle. We found that canopy photosynthetic capacity seasonality responds positively to precipitation when rain- fall is < 2000 mm yr-1 (water-limited forests) and to radia- tion otherwise (light-limited forests). On the other hand, in- dependent of climate limitations, wood productivity and lit- terfall are driven by seasonal variation in precipitation and evapotranspiration, respectively. Consequently, light-limited forests present an asynchronism between canopy photosyn- thetic capacity and wood productivity. First-order control by precipitation likely indicates a decrease in tropical forest pro- ductivity in a drier climate in water-limited forest, and in cur- rent light-limited forest with future rainfall < 2000 mm yr-1. 650 $aCarbon sinks 650 $aClimate change 650 $aTropical forests 650 $aWood 650 $aCarbono 650 $aFloresta tropical 650 $aMadeira 650 $aMudança Climática 700 1 $aHÉRAULT, B. 700 1 $aBONAL, D. 700 1 $aSTAHL, C. 700 1 $aANDERSON, L. O. 700 1 $aBAKER, T. R. 700 1 $aBECKER, G. S. 700 1 $aBEECKMAN, H. 700 1 $aSOUZA, D. B. 700 1 $aBOTOSSO, P. C. 700 1 $aBOWMAN, D. M. J. S. 700 1 $aBRÄUNING, A. 700 1 $aBREDE, B. 700 1 $aBROWN, F. I. 700 1 $aCAMARERO, J. J. 700 1 $aCAMARGO, P. B. 700 1 $aCARDOSO, F. C. G. 700 1 $aCARVALHO, F. A. 700 1 $aCASTRO, W. 700 1 $aCHAGAS, R. K. 700 1 $aCHAVE, J. 700 1 $aCHIDUMAYO, E. N. 700 1 $aCLARK, D. A. 700 1 $aCOSTA, F. R. C. 700 1 $aCOURALET, C. 700 1 $aMAURICIO, P. H. da S. 700 1 $aDALITZ, H. 700 1 $aCASTRO, V. R. de 700 1 $aMILANI, J. E. de F. 700 1 $aOLIVEIRA, E. C. de 700 1 $aARRUDA, L. de S. 700 1 $aDEVINEAU, JEAN-LOUIS 700 1 $aDREW, D. M. 700 1 $aDÜNISCH, O. 700 1 $aDURIGAN, G. 700 1 $aELIFURAHA, E. 700 1 $aFEDELE, F. 700 1 $aFEDELE, L. F. 700 1 $aFIGUEIREDO FILHO, A. 700 1 $aFINGER, C. A. G. 700 1 $aFRANCO, A. C. 700 1 $aFREITAS JÚNIOR, J. L. 700 1 $aGALVÃO, F. 700 1 $aGEBREKIRSTOS, A. 700 1 $aGLINIARS, R. 700 1 $aGRAÇA, P. M. L. de A. 700 1 $aGRIFFITHS, A. D. 700 1 $aGROGAN, J. 700 1 $aGUAN, K. 700 1 $aHOMEIER, J. 700 1 $aKANIESKI, M. R. 700 1 $aKHO, L. K. 700 1 $aKOENIG, J. 700 1 $aKREPKOWSKI, J. 700 1 $aLEMOS-FILHO, J. P. 700 1 $aLIEBERMAN, D. 700 1 $aLIEBERMAN, M. E. 700 1 $aLISI, C. S. 700 1 $aSANTOS, T. L. 700 1 $aLÓPEZ AYALA, J. L. 700 1 $aMAEDA, E. E. 700 1 $aMALHI, Y. 700 1 $aMARIA, V. R. B. 700 1 $aMARQUES, M. C. M. 700 1 $aMARQUES, R. 700 1 $aCHAMBA, H. M. 700 1 $aMBWAMBO, L. 700 1 $aMELGAÇO, K. L. L. 700 1 $aMENDIVELSO, H. A. 700 1 $aMURPHY, B. P. 700 1 $aO’BRIEN, J. J. 700 1 $aOBERBAUER, S. F. 700 1 $aOKADA, N. 700 1 $aPÉLISSIER, R. 700 1 $aPRIOR, L. D. 700 1 $aROIG, F. A. 700 1 $aROSS, M. 700 1 $aROSSATTO, D. R. 700 1 $aROSSI, V. 700 1 $aROWLAND, L. 700 1 $aRUTISHAUSER, E. 700 1 $aSANTANA, H. 700 1 $aSCHULZE, M. 700 1 $aSELHORST, D. 700 1 $aSILVA, W. R. 700 1 $aSILVEIRA, M. 700 1 $aSPANNL, S. 700 1 $aSWAINE, M. D. 700 1 $aTOLEDO, J. J. 700 1 $aTOLEDO, M. M. 700 1 $aTOLEDO, M. 700 1 $aTOMA. T. 700 1 $aTOMAZELLO FILHO, M. 700 1 $aVALDEZ HERNÁNDEZ, J. I. 700 1 $aVERBESSELT, J. 700 1 $aVIEIRA, S. A. 700 1 $aVINCENT, G. 700 1 $aCASTILHO, C. V. de 700 1 $aVOLLAND, F. 700 1 $aWORBES, M. 700 1 $aZANON, M. L. B. 700 1 $aARAGÃO, L. E. O. C. 773 $tBiogeosciences$gv. 13, n. 8, p. 2537-2562, Apr. 2016.
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Registro original: |
Embrapa Florestas (CNPF) |
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Registro Completo
Biblioteca(s): |
Embrapa Agrossilvipastoril; Embrapa Gado de Corte. |
Data corrente: |
04/02/2021 |
Data da última atualização: |
05/02/2021 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 1 |
Autoria: |
TESK, C. R. M.; CAVALLI, J.; PINA, D. S.; PEREIRA, D. H.; PEDREIRA, C. G. S.; JANK, L.; SOLLENBERGER, L. E.; PEDREIRA, B. C. e. |
Afiliação: |
CÁTIA REGINA MACAGNAN TESK, UFMT, Sinop-MT; JOSIANA CAVALLI, UFMT, Sinop-MT; DOUGLAS SANTOS PINA, UFBA, Salvador-BA; DALTON HENRIQUE PEREIRA, UFMT, Sinop-MT; CARLOS GUILHERME SILVEIRA PEDREIRA, USP-ESALQ, Piracicaba-SP; LIANA JANK, CNPGC; LYNN E. SOLLENBERGER, UNIVERSITY of FLORIDA, Gainsville-FL; BRUNO CARNEIRO E PEDREIRA, CPAMT. |
Título: |
Herbage responses of Tamani and Quenia guineagrasses to grazing intensity. |
Ano de publicação: |
2020 |
Fonte/Imprenta: |
Agronomy Journal, v. 112, n. 3, p. 2081-2091, 2020. |
DOI: |
http://doi.org/10.1002/agj2.20189 |
Idioma: |
Inglês |
Conteúdo: |
New forage cultivars require defoliation studies for recommending proper grazing management. Our objective was to characterize herbage accumulation (HA), plant-part composition and nutritive value of guineagrass [Megathyrsus maximus (Jacq.) B. K. Simon & S. W. L. Jacobs] rotationally stocked under two grazing intensities. The experimental design was a randomized complete block with three replicates of a 2 × 2 factorial arrangement of two guineagrass cultivars (?BRS Quênia? and ?BRS Tamani?) and two grazing intensities. Heavy (HGI) and lax (LGI) grazing intensities were imposed as post-grazing stubble heights: 15 and 25 cm for Tamani, and 20 and 35 cm for Quênia, respectively. The experimental period was from March 2015 to March 2017, comprising eight seasons (autumn 2015, winter 2015, spring 2015, summer 2016, autumn 2016, winter 2015, spring 2016, and summer 2017). In the spring 2016 and summer 2017, pre-grazing HM was sampled as two strata above the stubble height, each comprising 50% of the sampled height (upper and lower stratum). Total herbage accumulation was similar across years, cultivars, and intensities (16,810 kg DM ha−1). Quênia and Tamani had the greatest HA during summer. The leaf proportion was least in the HGI pastures. Under HGI, the lower stratum of both cultivars had the greatest stem proportion and the least nutritive value. The greatest herbage CP concentration and the least NDF, ADF, iNDF and LIG concentrations occurred in the upper stratum. Based on these results, 35 and 55 cm are recommended as target heights for initiation of grazing, and 25 and 35 cm as post-grazing stubble heights for Tamani and Quênia, respectively MenosNew forage cultivars require defoliation studies for recommending proper grazing management. Our objective was to characterize herbage accumulation (HA), plant-part composition and nutritive value of guineagrass [Megathyrsus maximus (Jacq.) B. K. Simon & S. W. L. Jacobs] rotationally stocked under two grazing intensities. The experimental design was a randomized complete block with three replicates of a 2 × 2 factorial arrangement of two guineagrass cultivars (?BRS Quênia? and ?BRS Tamani?) and two grazing intensities. Heavy (HGI) and lax (LGI) grazing intensities were imposed as post-grazing stubble heights: 15 and 25 cm for Tamani, and 20 and 35 cm for Quênia, respectively. The experimental period was from March 2015 to March 2017, comprising eight seasons (autumn 2015, winter 2015, spring 2015, summer 2016, autumn 2016, winter 2015, spring 2016, and summer 2017). In the spring 2016 and summer 2017, pre-grazing HM was sampled as two strata above the stubble height, each comprising 50% of the sampled height (upper and lower stratum). Total herbage accumulation was similar across years, cultivars, and intensities (16,810 kg DM ha−1). Quênia and Tamani had the greatest HA during summer. The leaf proportion was least in the HGI pastures. Under HGI, the lower stratum of both cultivars had the greatest stem proportion and the least nutritive value. The greatest herbage CP concentration and the least NDF, ADF, iNDF and LIG concentrations occurred in the upper stratum. Based... Mostrar Tudo |
Palavras-Chave: |
Allowance; BRS Quenia; BRS Tamani; Palisadegrass; Panicum-maximum; Rotational stocking. |
Thesagro: |
Pastejo; Sistema de Pastejo. |
Thesaurus NAL: |
Behavior; Canopy; Grasses; Neutral detergent fiber; Nutritive value; Panicum; Rotational grazing; Sward; Temperature; Urochloa brizantha. |
Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
Marc: |
LEADER 02851naa a2200433 a 4500 001 2129829 005 2021-02-05 008 2020 bl uuuu u00u1 u #d 024 7 $ahttp://doi.org/10.1002/agj2.20189$2DOI 100 1 $aTESK, C. R. M. 245 $aHerbage responses of Tamani and Quenia guineagrasses to grazing intensity.$h[electronic resource] 260 $c2020 520 $aNew forage cultivars require defoliation studies for recommending proper grazing management. Our objective was to characterize herbage accumulation (HA), plant-part composition and nutritive value of guineagrass [Megathyrsus maximus (Jacq.) B. K. Simon & S. W. L. Jacobs] rotationally stocked under two grazing intensities. The experimental design was a randomized complete block with three replicates of a 2 × 2 factorial arrangement of two guineagrass cultivars (?BRS Quênia? and ?BRS Tamani?) and two grazing intensities. Heavy (HGI) and lax (LGI) grazing intensities were imposed as post-grazing stubble heights: 15 and 25 cm for Tamani, and 20 and 35 cm for Quênia, respectively. The experimental period was from March 2015 to March 2017, comprising eight seasons (autumn 2015, winter 2015, spring 2015, summer 2016, autumn 2016, winter 2015, spring 2016, and summer 2017). In the spring 2016 and summer 2017, pre-grazing HM was sampled as two strata above the stubble height, each comprising 50% of the sampled height (upper and lower stratum). Total herbage accumulation was similar across years, cultivars, and intensities (16,810 kg DM ha−1). Quênia and Tamani had the greatest HA during summer. The leaf proportion was least in the HGI pastures. Under HGI, the lower stratum of both cultivars had the greatest stem proportion and the least nutritive value. The greatest herbage CP concentration and the least NDF, ADF, iNDF and LIG concentrations occurred in the upper stratum. Based on these results, 35 and 55 cm are recommended as target heights for initiation of grazing, and 25 and 35 cm as post-grazing stubble heights for Tamani and Quênia, respectively 650 $aBehavior 650 $aCanopy 650 $aGrasses 650 $aNeutral detergent fiber 650 $aNutritive value 650 $aPanicum 650 $aRotational grazing 650 $aSward 650 $aTemperature 650 $aUrochloa brizantha 650 $aPastejo 650 $aSistema de Pastejo 653 $aAllowance 653 $aBRS Quenia 653 $aBRS Tamani 653 $aPalisadegrass 653 $aPanicum-maximum 653 $aRotational stocking 700 1 $aCAVALLI, J. 700 1 $aPINA, D. S. 700 1 $aPEREIRA, D. H. 700 1 $aPEDREIRA, C. G. S. 700 1 $aJANK, L. 700 1 $aSOLLENBERGER, L. E. 700 1 $aPEDREIRA, B. C. e 773 $tAgronomy Journal$gv. 112, n. 3, p. 2081-2091, 2020.
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