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Registro completo
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Biblioteca (s) : |
INIA La Estanzuela; INIA Treinta y Tres. |
Fecha : |
21/02/2014 |
Actualizado : |
01/06/2015 |
Tipo de producción científica : |
Trabajos en Congresos/Conferencias |
Autor : |
AYALA, W.; BARRIOS, E.; BERMÚDEZ, R.; SERRÓN, N. |
Afiliación : |
WALTER AYALA SILVERA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; ETHEL BALOISA BARRIOS PIRIZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; RAUL ENRIQUE BERMUDEZ COQUARD, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; NESTOR DANIEL SERRON DUPLATT, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
Título : |
Effect of defoliation strategies on the productivity, population and morphology of plantain (Plantago lanceolata). |
Fecha de publicación : |
2011 |
Fuente / Imprenta : |
ln: PASTURE PERSISTENCE SYMPOSIUM (2011, Hamilton, NZ). Papers. Dunedin, NZ: NZGA, 2011. |
Páginas : |
p. 69-72. |
Serie : |
(Grassland Research and Practice Series, 15) |
ISSN : |
0110-8581 |
Idioma : |
Inglés |
Notas : |
Ejemplar donado por el editor, entregado por M. Rebuffo, 2012. - También disponible versión electrónica de acceso abierto en: Proceedings of the New Zealand Grassland Association, v. 73, p. 69-73, 2011. |
Contenido : |
Abstract: This trial provided information about effects of defoliation frequency, defoliation intensity and winter management (grazing or rest) on the productivity, morphology and plant population of a 3-year-old plantain (Plantago lanceolata) stand. Plant population density declined drastically over time independently of grazing management, with the greatest decrease in summer. Winter grazing had a critical effect on the productivity and population remaining 6 months later. Frequent grazing during summer increased plantain contribution. Grazing intensity reduced crown weight and diameter of individual plants. Further studies are required to determine the interactions of defoliation management with pastures of different age including the natural reseeding as a mechanism to maintain plant recruitment. |
Palabras claves : |
DEFOLIACIÓN; PLÁNTAGO CULTIVAR CERES TONIC. |
Thesagro : |
OVINOS; PASTOREO; PLANTAGO LANCEOLATA. |
Asunto categoría : |
F01 Cultivo |
URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/4545/1/Congreso-Ayala-2011-1.pdf
http://www.grassland.org.nz/publications/nzgrassland_publication_2236.pdf
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Marc : |
LEADER 01814naa a2200265 a 4500 001 1048188 005 2015-06-01 008 2011 bl uuuu u00u1 u #d 022 $a0110-8581 100 1 $aAYALA, W. 245 $aEffect of defoliation strategies on the productivity, population and morphology of plantain (Plantago lanceolata). 260 $c2011 300 $ap. 69-72. 490 $a(Grassland Research and Practice Series, 15) 500 $aEjemplar donado por el editor, entregado por M. Rebuffo, 2012. - También disponible versión electrónica de acceso abierto en: Proceedings of the New Zealand Grassland Association, v. 73, p. 69-73, 2011. 520 $aAbstract: This trial provided information about effects of defoliation frequency, defoliation intensity and winter management (grazing or rest) on the productivity, morphology and plant population of a 3-year-old plantain (Plantago lanceolata) stand. Plant population density declined drastically over time independently of grazing management, with the greatest decrease in summer. Winter grazing had a critical effect on the productivity and population remaining 6 months later. Frequent grazing during summer increased plantain contribution. Grazing intensity reduced crown weight and diameter of individual plants. Further studies are required to determine the interactions of defoliation management with pastures of different age including the natural reseeding as a mechanism to maintain plant recruitment. 650 $aOVINOS 650 $aPASTOREO 650 $aPLANTAGO LANCEOLATA 653 $aDEFOLIACIÓN 653 $aPLÁNTAGO CULTIVAR CERES TONIC 700 1 $aBARRIOS, E. 700 1 $aBERMÚDEZ, R. 700 1 $aSERRÓN, N. 773 $tln: PASTURE PERSISTENCE SYMPOSIUM (2011, Hamilton, NZ). Papers. Dunedin, NZ: NZGA, 2011.
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Registro original : |
INIA La Estanzuela (LE) |
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| Acceso al texto completo restringido a Biblioteca INIA Treinta y Tres. Por información adicional contacte bibliott@inia.org.uy. |
Registro completo
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Biblioteca (s) : |
INIA Treinta y Tres. |
Fecha actual : |
11/06/2020 |
Actualizado : |
22/02/2021 |
Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
Circulación / Nivel : |
Internacional - -- |
Autor : |
DO CARMO, M.; CARDOZO, G.; MECATTI, F.; SOCA, P.; HIRATA, M. |
Afiliación : |
MARTÍN DO CARMO, Departamento de Sistemas Agrarios y Paisajes Culturales, Centro Universitario de la Región Este, Rocha, Uruguay.; GERONIMO AGUSTIN CARDOZO CABANELAS, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; FULVIA MECATTI, Department of Statistics, Università degli Studi di Milano-Bicocca.; PABLO SOCA, Universidad de la República, School of Agronomy, EEMAC.; MASAHIKO HIRATA, Department of Animal and Grassland Sciences, University of Miyazaki. |
Título : |
Number of samples for accurate visual estimation of mean herbage mass in Campos grasslands. |
Fecha de publicación : |
2020 |
Fuente / Imprenta : |
Agronomy Journal, July 2020, Vol. 112(4), p. 2734-2740. Doi: https://doi.org/10.1002/agj2.20237 |
DOI : |
DOI: 10.1002/agj2.20237 |
Idioma : |
Inglés |
Notas : |
Article history: Manuscript received: 23 October 2019. Manuscript revised: 23 March 2020. Manuscript accepted: 01 April 2020. Accepted manuscript online: 09 April 2020. Version of Record online: 19 May 2020. Published July 2020. |
Contenido : |
The number of samples is a major issue when estimating the mean herbage mass of grazed paddocks. The aim of this study was to assess the number of samples required for accurate visual estimation of mean herbage mass in relation to the herbage mass heterogeneity and size of paddocks. Data were collected across scales of space and time (273 sampling events) from paddocks on Campos grasslands in Uruguay, using the visual estimation technique. The mean herbage mass of the paddocks ranged from 270 to 6350 kg DM ha−1 with coefficient of variation (CV) of 0.13 to 1.26. Twenty-four events representing four levels of herbage mass heterogeneity (CV = 0.3, 0.5, 0.7 and 1.0) × three levels of paddock size (small, 5?13 ha; medium, 41?67 ha; large, 100?140 ha) were chosen (two replicates per group), and analyzed for the probability that the estimation error exceeded 10% of the mean (10% error probability) using the bootstrap technique. The number of samples required for
controlling the 10% error probability below 0.1 increased gradually from 50 to 150 per paddock as the CV increased from 0.3 to 0.7, then sharply to 350 until the CV increased to 1.0, with no effect of paddock size. Taking account of the distribution of CV (< 0.7 in nearly 80% of the events), we propose a general recommendation to take a minimum of 150 samples per paddock for accurate estimation of mean herbage mass in Campos grasslands irrespective of the size of paddocks. |
Palabras claves : |
ANIMAL PRODUCTION; E-TANIN; ESTIMACION DE BIOMASA; FIELD IMPROVEMENT; LOTUS PEDUNCULATUS; MEJORAMIENTO DE CAMPO; MEJORAMIENTO DE CAMPO NATURAL; PRODUCCIÓN ANIMAL. |
Asunto categoría : |
-- |
Marc : |
LEADER 02569naa a2200289 a 4500 001 1061106 005 2021-02-22 008 2020 bl uuuu u00u1 u #d 024 7 $aDOI: 10.1002/agj2.20237$2DOI 100 1 $aDO CARMO, M. 245 $aNumber of samples for accurate visual estimation of mean herbage mass in Campos grasslands.$h[electronic resource] 260 $c2020 500 $aArticle history: Manuscript received: 23 October 2019. Manuscript revised: 23 March 2020. Manuscript accepted: 01 April 2020. Accepted manuscript online: 09 April 2020. Version of Record online: 19 May 2020. Published July 2020. 520 $aThe number of samples is a major issue when estimating the mean herbage mass of grazed paddocks. The aim of this study was to assess the number of samples required for accurate visual estimation of mean herbage mass in relation to the herbage mass heterogeneity and size of paddocks. Data were collected across scales of space and time (273 sampling events) from paddocks on Campos grasslands in Uruguay, using the visual estimation technique. The mean herbage mass of the paddocks ranged from 270 to 6350 kg DM ha−1 with coefficient of variation (CV) of 0.13 to 1.26. Twenty-four events representing four levels of herbage mass heterogeneity (CV = 0.3, 0.5, 0.7 and 1.0) × three levels of paddock size (small, 5?13 ha; medium, 41?67 ha; large, 100?140 ha) were chosen (two replicates per group), and analyzed for the probability that the estimation error exceeded 10% of the mean (10% error probability) using the bootstrap technique. The number of samples required for controlling the 10% error probability below 0.1 increased gradually from 50 to 150 per paddock as the CV increased from 0.3 to 0.7, then sharply to 350 until the CV increased to 1.0, with no effect of paddock size. Taking account of the distribution of CV (< 0.7 in nearly 80% of the events), we propose a general recommendation to take a minimum of 150 samples per paddock for accurate estimation of mean herbage mass in Campos grasslands irrespective of the size of paddocks. 653 $aANIMAL PRODUCTION 653 $aE-TANIN 653 $aESTIMACION DE BIOMASA 653 $aFIELD IMPROVEMENT 653 $aLOTUS PEDUNCULATUS 653 $aMEJORAMIENTO DE CAMPO 653 $aMEJORAMIENTO DE CAMPO NATURAL 653 $aPRODUCCIÓN ANIMAL 700 1 $aCARDOZO, G. 700 1 $aMECATTI, F. 700 1 $aSOCA, P. 700 1 $aHIRATA, M. 773 $tAgronomy Journal, July 2020, Vol. 112(4), p. 2734-2740. Doi: https://doi.org/10.1002/agj2.20237
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